Archive

2024  12

April  10

Leetcode 1824 - Minimum Sideway Jumps

April 21, 2024 · 2 min · zhengcf

Leetcode 2140 - Solving Questions With Brainpower

April 20, 2024 · 2 min · zhengcf

Leetcode 611 - Valid Triangle Number

April 20, 2024 · 1 min · zhengcf

Leetcode 2770 - Maximum Number of Jumps to Reach the Last Index

April 20, 2024 · 2 min · zhengcf

Leetcode 403 - Frog Jump

April 20, 2024 · 2 min · zhengcf

Leetcode 740 - Delete and Earn

April 17, 2024 · 2 min · zhengcf

Leetcode 540 - Single Element in a Sorted Array

April 16, 2024 · 1 min · zhengcf

Leetcode 715 - Range Module

April 14, 2024 · 3 min · zhengcf

Leetcode 1192 - Critical Connections in a Network

April 13, 2024 · 2 min · zhengcf

Leetcode 1857 - Largest Color Value in a Directed Graph

April 13, 2024 · 3 min · zhengcf

February  2

TODO List

February 8, 2024 · 1 min · zhengcf

Move to Hugo

February 8, 2024 · 2 min · zhengcf

2022  43

July  11

booer moore字串比對

July 30, 2022 · 2 min · zhengcf

state monad & reverse state monad

July 30, 2022 · 3 min · zhengcf

思辨賽局：看穿局勢、創造優勢的策略智慧 心得

July 30, 2022 · 8 min · zhengcf

leetcode-1305 - All Elements in Two Binary Search Trees

July 30, 2022 · 1 min · zhengcf

leetcode-530 - Minimum Absolute Difference in BST

July 30, 2022 · 1 min · zhengcf

leetcode-538 - Convert BST to Greater Tree

July 30, 2022 · 1 min · zhengcf

leetcode-623 - Add One Row to Tree

July 30, 2022 · 2 min · zhengcf

leetcode-449 - Serialize and Deserialize BST

July 30, 2022 · 1 min · zhengcf

leetcode-1539 - Kth Missing Positive Number

July 30, 2022 · 1 min · zhengcf

leetcode-888 - Fair Candy Swap

July 30, 2022 · 2 min · zhengcf

leetcode-1608 - Special Array With X Elements Greater Than or Equal X

July 30, 2022 · 2 min · zhengcf

April  4

條件變數與原子性

April 13, 2022 · 2 min · zhengcf

leetcode-1315 - Sum of Nodes with Even-Valued Grandparent

April 12, 2022 · 1 min · zhengcf

review-leetcode

April 12, 2022 · 5 min · zhengcf

分散式手法

April 10, 2022 · 1 min · zhengcf

March  11

共識、錯誤、時間、排序

March 31, 2022 · 2 min · zhengcf

raft補遺

March 31, 2022 · 1 min · zhengcf

Erasure Code

March 31, 2022 · 1 min · zhengcf

sync演算法 (但沒用)

March 31, 2022 · 2 min · zhengcf

cmu 14-445 lab的不完全筆記

March 31, 2022 · 7 min · zhengcf

6-824的question

March 17, 2022 · 5 min · zhengcf

raft優化

March 14, 2022 · 1 min · zhengcf

rendezvous hash與consistent hash

March 14, 2022 · 2 min · zhengcf

paxos到zab再到raft

March 13, 2022 · 2 min · zhengcf

mit 6.824 2022 實驗筆記

March 11, 2022 · 1 min · zhengcf

mit 6.824筆記

March 11, 2022 · 10 min · zhengcf

January  17

the complete guide to rails performance讀後筆記

January 30, 2022 · 13 min · zhengcf

奔跑吧linux內核ch2~ch5摘錄

January 30, 2022 · 1 min · zhengcf

xv6 labs

January 21, 2022 · 30 min · zhengcf

電腦從0開始

January 18, 2022 · 9 min · zhengcf

database system

January 17, 2022 · 6 min · zhengcf

Distributed computing

January 17, 2022 · 8 min · zhengcf

k8s概念

January 17, 2022 · 5 min · zhengcf

只讀一部份的yaml成ansible的變數

January 17, 2022 · 1 min · zhengcf

Parallel Thinking

January 17, 2022 · 8 min · zhengcf

在bash中寫rucursive

January 17, 2022 · 1 min · zhengcf

helm tutorial

January 17, 2022 · 2 min · zhengcf

最高閒聊法

January 17, 2022 · 2 min · zhengcf

Power：Why Some People Have It and Others Don’t

January 17, 2022 · 3 min · zhengcf

在javascript做deep copy?

January 17, 2022 · 1 min · zhengcf

Designing Data-Intensive Applications

January 17, 2022 · 8 min · zhengcf

巨型服務架構：分布式/資料庫優化/記憶體快取設計/IO模型

January 17, 2022 · 4 min · zhengcf

queuing thoery的tutorial

January 17, 2022 · 3 min · zhengcf

2021  512

November  28

Z Algorithm

November 21, 2021 · 1 min · zhengcf

Manacher’s Algorithm

November 21, 2021 · 1 min · zhengcf

min max對役

November 21, 2021 · 1 min · zhengcf

演算法會用到的概念

November 21, 2021 · 1 min · zhengcf

Dynamic programming

November 21, 2021 · 6 min · zhengcf

神奇的圖論技巧(進階圖論)

November 20, 2021 · 4 min · zhengcf

suffix array

November 20, 2021 · 1 min · zhengcf

線段樹

November 20, 2021 · 3 min · zhengcf

樹與圖的重心、直徑

November 19, 2021 · 3 min · zhengcf

平攤分析

November 18, 2021 · 1 min · zhengcf

區間問題

November 18, 2021 · 1 min · zhengcf

倍增思維

November 18, 2021 · 1 min · zhengcf

分塊思想

November 17, 2021 · 2 min · zhengcf

各種平衡樹

November 17, 2021 · 6 min · zhengcf

Polygon Concavity Index

November 6, 2021 · 1 min · zhengcf

Str-Symmetry-Point

November 6, 2021 · 1 min · zhengcf

First-Unique

November 6, 2021 · 1 min · zhengcf

Tree-Height

November 6, 2021 · 1 min · zhengcf

Array-Inversion-Count

November 6, 2021 · 1 min · zhengcf

Disappearing-Pairs

November 6, 2021 · 1 min · zhengcf

packet在linux中走過的路2

November 4, 2021 · 4 min · zhengcf

netfilter的conntrack

November 4, 2021 · 1 min · zhengcf

free-freer-monad

November 4, 2021 · 2 min · zhengcf

amdahl’s law

November 4, 2021 · 1 min · zhengcf

syscall與vdso

November 4, 2021 · 1 min · zhengcf

nat穿隧筆記

November 3, 2021 · 1 min · zhengcf

ipv6筆記

November 3, 2021 · 1 min · zhengcf

continuation整理與CPS轉換

November 2, 2021 · 7 min · zhengcf

October  23

有用的連結

October 30, 2021 · 1 min · zhengcf

英文寫作教學資源

October 30, 2021 · 1 min · zhengcf

怎麼分析系統

October 30, 2021 · 4 min · zhengcf

用docker compose建一個ipxe的server

October 30, 2021 · 3 min · zhengcf

http-protocol

October 27, 2021 · 2 min · zhengcf

怎麼survey

October 27, 2021 · 1 min · zhengcf

network的traffic control

October 26, 2021 · 2 min · zhengcf

誰開了檔案

October 26, 2021 · 1 min · zhengcf

共變數和反變數

October 26, 2021 · 1 min · zhengcf

nftables

October 22, 2021 · 4 min · zhengcf

macro與條件式編譯

October 22, 2021 · 1 min · zhengcf

overlayfs

October 22, 2021 · 1 min · zhengcf

rootfs與initramfs (with WSL2的安裝)

October 22, 2021 · 1 min · zhengcf

ltrace-strace

October 22, 2021 · 1 min · zhengcf

linux debug工具 part1

October 22, 2021 · 1 min · zhengcf

floatpoint

October 22, 2021 · 1 min · zhengcf

pam的整理

October 17, 2021 · 1 min · zhengcf

在wsl2使用vagrant

October 15, 2021 · 2 min · zhengcf

沒有sizeof算size

October 15, 2021 · 1 min · zhengcf

幫ansible加速!!

October 15, 2021 · 1 min · zhengcf

arch linux的安裝更新

October 5, 2021 · 1 min · zhengcf

拯救rm的檔案

October 3, 2021 · 1 min · zhengcf

netcat的基本用法

October 3, 2021 · 1 min · zhengcf

September  57

leetcode-1863 - Sum of All Subset XOR Totals

September 27, 2021 · 2 min · zhengcf

leetcode-1286 - Iterator for Combination

September 27, 2021 · 2 min · zhengcf

leetcode-357 - Count Numbers with Unique Digits

September 27, 2021 · 1 min · zhengcf

leetcode-1441 - Build an Array With Stack Operations

September 27, 2021 · 2 min · zhengcf

leetcode-299 - Bulls and Cows

September 27, 2021 · 2 min · zhengcf

leetcode-475 - Heaters

September 19, 2021 · 2 min · zhengcf

leetcode-1631 - Path With Minimum Effort

September 19, 2021 · 2 min · zhengcf

leetcode-1512 - Number of Good Pairs

September 18, 2021 · 1 min · zhengcf

leetcode-801 - Minimum Swaps To Make Sequences Increasing

September 18, 2021 · 2 min · zhengcf

leetcode-1482 - Minimum Number of Days to Make m Bouquets

September 18, 2021 · 3 min · zhengcf

leetcode-975 - Odd Even Jump

September 17, 2021 · 4 min · zhengcf

leetcode-482 - License Key Formatting

September 17, 2021 · 2 min · zhengcf

leetcode-1007 - Minimum Domino Rotations For Equal Row

September 16, 2021 · 2 min · zhengcf

leetcode-1509 - Minimum Difference Between Largest and Smallest Value in Three Moves

September 16, 2021 · 1 min · zhengcf

leetcode-1525 - Number of Good Ways to Split a String

September 16, 2021 · 2 min · zhengcf

leetcode-1774 - Closest Dessert Cost

September 16, 2021 · 2 min · zhengcf

leetcode-1161 - Maximum Level Sum of a Binary Tree

September 15, 2021 · 1 min · zhengcf

leetcode-413 - Arithmetic Slices

September 14, 2021 · 1 min · zhengcf

leetcode-1288 - Remove Covered Intervals

September 14, 2021 · 1 min · zhengcf

leetcode-372 - Super Pow

September 14, 2021 · 1 min · zhengcf

leetcode-319 - Bulb Switcher

September 14, 2021 · 1 min · zhengcf

leetcode-797 - All Paths From Source to Target

September 14, 2021 · 1 min · zhengcf

leetcode-652 - Find Duplicate Subtrees

September 14, 2021 · 1 min · zhengcf

leetcode-645 - Set Mismatch

September 14, 2021 · 1 min · zhengcf

leetcode-848 - Shifting Letters

September 14, 2021 · 1 min · zhengcf

leetcode-633 - Sum of Square Numbers

September 14, 2021 · 1 min · zhengcf

leetcode-969 - Pancake Sorting

September 14, 2021 · 2 min · zhengcf

leetcode-764 - Largest Plus Sign

September 14, 2021 · 2 min · zhengcf

leetcode-598 - Range Addition II

September 14, 2021 · 1 min · zhengcf

leetcode-990 - Satisfiability of Equality Equations

September 14, 2021 · 2 min · zhengcf

leetcode-1541 - Minimum Insertions to Balance a Parentheses String

September 14, 2021 · 2 min · zhengcf

leetcode-659 - Split Array into Consecutive Subsequences

September 14, 2021 · 2 min · zhengcf

leetcode-391 - Perfect Rectangle

September 14, 2021 · 1 min · zhengcf

leetcode-850 - Rectangle Area II

September 14, 2021 · 2 min · zhengcf

leetcode-793 - Preimage Size of Factorial Zeroes Function

September 14, 2021 · 2 min · zhengcf

leetcode-330 - Patching Array

September 14, 2021 · 1 min · zhengcf

leetcode-446 - Arithmetic Slices II - Subsequence

September 14, 2021 · 1 min · zhengcf

leetcode-1109 - Corporate Flight Bookings

September 13, 2021 · 1 min · zhengcf

leetcode-875 - Koko Eating Bananas

September 13, 2021 · 1 min · zhengcf

leetcode-710 - Random Pick with Blacklist

September 13, 2021 · 2 min · zhengcf

leetcode-410 - Split Array Largest Sum

September 13, 2021 · 1 min · zhengcf

leetcode-701 - Insert into a Binary Search Tree

September 13, 2021 · 1 min · zhengcf

leetcode-752 - Open the Lock

September 13, 2021 · 2 min · zhengcf

leetcode-899 - Orderly Queue

September 13, 2021 · 1 min · zhengcf

leetcode-1373 - Maximum Sum BST in Binary Tree

September 13, 2021 · 2 min · zhengcf

leetcode-1629 - Slowest Key

September 13, 2021 · 3 min · zhengcf

leetcode-1038 - Binary Search Tree to Greater Sum Tree

September 13, 2021 · 1 min · zhengcf

leetcode-1189 - Maximum Number of Balloons

September 13, 2021 · 1 min · zhengcf

leetcode-1111 - Maximum Nesting Depth of Two Valid Parentheses Strings

September 5, 2021 · 2 min · zhengcf

leetcode-855 - Exam Room

September 5, 2021 · 2 min · zhengcf

leetcode-1386 - Cinema Seat Allocation

September 5, 2021 · 2 min · zhengcf

leetcode-887 - Super Egg Drop

September 5, 2021 · 2 min · zhengcf

leetcode-565 - Array Nesting

September 5, 2021 · 1 min · zhengcf

leetcode-834 - Sum of Distances in Tree

September 5, 2021 · 2 min · zhengcf

leetcode-962 - Maximum Width Ramp

September 5, 2021 · 2 min · zhengcf

packet在linux中走過的路

September 2, 2021 · 1 min · zhengcf

external sort

September 1, 2021 · 1 min · zhengcf

August  104

golang與繼承與template method pattern

August 31, 2021 · 1 min · zhengcf

leetcode-52 - N-Queens II

August 29, 2021 · 1 min · zhengcf

leetcode-1235 - Maximum Profit in Job Scheduling

August 29, 2021 · 2 min · zhengcf

leetcode-522 - Longest Uncommon Subsequence II

August 29, 2021 · 1 min · zhengcf

leetcode-521 - Longest Uncommon Subsequence I

August 29, 2021 · 2 min · zhengcf

net-faq

August 29, 2021 · 4 min · zhengcf

leetcode-1448 - Count Good Nodes in Binary Tree

August 20, 2021 · 1 min · zhengcf

leetcode-891 - Sum of Subsequence Widths

August 20, 2021 · 1 min · zhengcf

leetcode-768 - Max Chunks To Make Sorted II

August 20, 2021 · 1 min · zhengcf

leetcode-769 - Max Chunks To Make Sorted

August 20, 2021 · 2 min · zhengcf

leetcode-1130 - Minimum Cost Tree From Leaf Values

August 20, 2021 · 2 min · zhengcf

leetcode-1793 - Maximum Score of a Good Subarray

August 19, 2021 · 1 min · zhengcf

leetcode-1856 - Maximum Subarray Min-Product

August 19, 2021 · 2 min · zhengcf

leetcode-321 - Create Maximum Number

August 19, 2021 · 2 min · zhengcf

leetcode-316 - Remove Duplicate Letters

August 19, 2021 · 1 min · zhengcf

leetcode-901 - Online Stock Span

August 19, 2021 · 2 min · zhengcf

leetcode-503 - Next Greater Element II

August 19, 2021 · 1 min · zhengcf

leetcode-856 - Score of Parentheses

August 19, 2021 · 1 min · zhengcf

leetcode-1339 - Maximum Product of Splitted Binary Tree

August 19, 2021 · 1 min · zhengcf

java的faq

August 18, 2021 · 2 min · zhengcf

刪linked list的好做法??

August 16, 2021 · 1 min · zhengcf

leetcode-907 - Sum of Subarray Minimums

August 16, 2021 · 2 min · zhengcf

leetcode-718 - Maximum Length of Repeated Subarray

August 16, 2021 · 1 min · zhengcf

leetcode-1438 - Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit

August 16, 2021 · 2 min · zhengcf

leetcode-516 - Longest Palindromic Subsequence

August 16, 2021 · 1 min · zhengcf

leetcode-1248 - Count Number of Nice Subarrays

August 15, 2021 · 1 min · zhengcf

leetcode-1234 - Replace the Substring for Balanced String

August 15, 2021 · 2 min · zhengcf

leetcode-930 - Binary Subarrays With Sum

August 15, 2021 · 1 min · zhengcf

leetcode-1004 - Max Consecutive Ones III

August 15, 2021 · 1 min · zhengcf

leetcode-992 - Subarrays with K Different Integers

August 15, 2021 · 1 min · zhengcf

leetcode-546 - Remove Boxes

August 15, 2021 · 1 min · zhengcf

leetcode-862 - Shortest Subarray with Sum at Least K

August 15, 2021 · 1 min · zhengcf

leetcode-399 - Evaluate Division

August 14, 2021 · 2 min · zhengcf

leetcode-1361 - Validate Binary Tree Nodes

August 14, 2021 · 1 min · zhengcf

leetcode-492 - Construct the Rectangle

August 14, 2021 · 1 min · zhengcf

leetcode-433 - Minimum Genetic Mutation

August 13, 2021 · 2 min · zhengcf

leetcode-147 - Insertion Sort List

August 13, 2021 · 2 min · zhengcf

leetcode-386 - Lexicographical Numbers

August 12, 2021 · 1 min · zhengcf

奔跑吧linux kernel第一章筆記

August 12, 2021 · 2 min · zhengcf

leetcode-954 - Array of Doubled Pairs

August 11, 2021 · 1 min · zhengcf

leetcode-354 - Russian Doll Envelopes

August 11, 2021 · 1 min · zhengcf

leetcode-352 - Data Stream as Disjoint Intervals

August 11, 2021 · 2 min · zhengcf

leetcode-450 - Delete Node in a BST

August 10, 2021 · 2 min · zhengcf

leetcode-89 - Gray Code

August 10, 2021 · 2 min · zhengcf

leetcode-926 - Flip String to Monotone Increasing

August 10, 2021 · 2 min · zhengcf

leetcode-1008 - Construct Binary Search Tree from Preorder Traversal

August 10, 2021 · 2 min · zhengcf

leetcode-525 - Contiguous Array

August 10, 2021 · 1 min · zhengcf

leetcode-355 - Design Twitter

August 10, 2021 · 2 min · zhengcf

leetcode-501 - Find Mode in Binary Search Tree

August 10, 2021 · 2 min · zhengcf

leetcode-404 - Sum of Left Leaves

August 10, 2021 · 1 min · zhengcf

leetcode-415 - Add Strings

August 10, 2021 · 1 min · zhengcf

leetcode-529 - Minesweeper

August 9, 2021 · 2 min · zhengcf

leetcode-575 - Distribute Candies

August 9, 2021 · 2 min · zhengcf

leetcode-905 - Sort Array By Parity

August 9, 2021 · 1 min · zhengcf

leetcode-18 - 4Sum

August 9, 2021 · 2 min · zhengcf

leetcode-587 - Erect the Fence

August 9, 2021 · 1 min · zhengcf

leetcode-402 - Remove K Digits

August 9, 2021 · 1 min · zhengcf

leetcode-1632 - Rank Transform of a Matrix

August 9, 2021 · 2 min · zhengcf

leetcode-1331 - Rank Transform of an Array

August 9, 2021 · 1 min · zhengcf

leetcode-260 - Single Number III

August 8, 2021 · 1 min · zhengcf

leetcode-342 - Power of Four

August 8, 2021 · 1 min · zhengcf

leetcode-398 - Random Pick Index

August 8, 2021 · 1 min · zhengcf

leetcode-389 - Find the Difference

August 8, 2021 · 1 min · zhengcf

leetcode-498 - Diagonal Traverse

August 8, 2021 · 1 min · zhengcf

leetcode-396 - Rotate Function

August 8, 2021 · 2 min · zhengcf

leetcode-132 - Palindrome Partitioning II

August 7, 2021 · 1 min · zhengcf

leetcode-1351 - Count Negative Numbers in a Sorted Matrix

August 7, 2021 · 1 min · zhengcf

leetcode-1346 - Check If N and Its Double Exist

August 7, 2021 · 1 min · zhengcf

leetcode-93 - Restore IP Addresses

August 7, 2021 · 1 min · zhengcf

打leetcode API心得

August 6, 2021 · 1 min · zhengcf

leetcode-429 - N-ary Tree Level Order Traversal

August 6, 2021 · 1 min · zhengcf

Topological sort

August 5, 2021 · 1 min · zhengcf

leetcode-61 - Rotate List

August 5, 2021 · 1 min · zhengcf

leetcode-107 - Binary Tree Level Order Traversal II

August 5, 2021 · 1 min · zhengcf

leetcode-895 - Maximum Frequency Stack

August 5, 2021 · 2 min · zhengcf

leetcode-632 - Smallest Range Covering Elements from K Lists

August 5, 2021 · 1 min · zhengcf

leetcode-745 - Prefix and Suffix Search

August 5, 2021 · 2 min · zhengcf

leetcode-1203 - Sort Items by Groups Respecting Dependencies

August 5, 2021 · 2 min · zhengcf

leetcode-336 - Palindrome Pairs

August 5, 2021 · 1 min · zhengcf

leetcode-30 - Substring with Concatenation of All Words

August 5, 2021 · 1 min · zhengcf

leetcode-828 - Count Unique Characters of All Substrings of a Given String

August 4, 2021 · 1 min · zhengcf

leetcode-480 - Sliding Window Median

August 4, 2021 · 2 min · zhengcf

leetcode-995 - Minimum Number of K Consecutive Bit Flips

August 4, 2021 · 1 min · zhengcf

combinatorial-objects

August 3, 2021 · 1 min · zhengcf

最短距離演算法簡單筆記

August 3, 2021 · 3 min · zhengcf

leetcode-630 - Course Schedule III

August 3, 2021 · 2 min · zhengcf

leetcode-827 - Making A Large Island

August 2, 2021 · 2 min · zhengcf

leetcode-665 - Non-decreasing Array

August 2, 2021 · 2 min · zhengcf

leetcode-310 - Minimum Height Trees

August 2, 2021 · 2 min · zhengcf

leetcode-705 - Design HashSet

August 1, 2021 · 1 min · zhengcf

leetcode-605 - Can Place Flowers

August 1, 2021 · 1 min · zhengcf

leetcode-986 - Interval List Intersections

August 1, 2021 · 2 min · zhengcf

leetcode-421 - Maximum XOR of Two Numbers in an Array

August 1, 2021 · 1 min · zhengcf

leetcode-720 - Longest Word in Dictionary

August 1, 2021 · 1 min · zhengcf

leetcode-117 - Populating Next Right Pointers in Each Node II

August 1, 2021 · 1 min · zhengcf

leetcode-767 - Reorganize String

August 1, 2021 · 1 min · zhengcf

leetcode-520 - Detect Capital

August 1, 2021 · 1 min · zhengcf

leetcode-973 - K Closest Points to Origin

August 1, 2021 · 1 min · zhengcf

leetcode-904 - Fruit Into Baskets

August 1, 2021 · 2 min · zhengcf

leetcode-658 - Find K Closest Elements

August 1, 2021 · 1 min · zhengcf

leetcode-77 - Combinations

August 1, 2021 · 1 min · zhengcf

leetcode-977 - Squares of a Sorted Array

August 1, 2021 · 1 min · zhengcf

leetcode-852 - Peak Index in a Mountain Array

August 1, 2021 · 1 min · zhengcf

leetcode-713 - Subarray Product Less Than K

August 1, 2021 · 2 min · zhengcf

July  211

leetcode-863 - All Nodes Distance K in Binary Tree

July 31, 2021 · 1 min · zhengcf

leetcode-113 - Path Sum II

July 31, 2021 · 1 min · zhengcf

leetcode-654 - Maximum Binary Tree

July 31, 2021 · 2 min · zhengcf

leetcode-16 - 3Sum Closest

July 31, 2021 · 1 min · zhengcf

leetcode-452 - Minimum Number of Arrows to Burst Balloons

July 31, 2021 · 2 min · zhengcf

leetcode-74 - Search a 2D Matrix

July 31, 2021 · 1 min · zhengcf

leetcode-92 - Reverse Linked List II

July 31, 2021 · 1 min · zhengcf

leetcode-673 - Number of Longest Increasing Subsequence

July 31, 2021 · 1 min · zhengcf

leetcode-216 - Combination Sum III

July 31, 2021 · 2 min · zhengcf

leetcode-40 - Combination Sum II

July 31, 2021 · 1 min · zhengcf

leetcode-698 - Partition to K Equal Sum Subsets

July 31, 2021 · 1 min · zhengcf

leetcode-744 - Find Smallest Letter Greater Than Target

July 31, 2021 · 1 min · zhengcf

leetcode-704 - Binary Search

July 31, 2021 · 1 min · zhengcf

leetcode-784 - Letter Case Permutation

July 31, 2021 · 1 min · zhengcf

leetcode-677 - Map Sum Pairs

July 31, 2021 · 2 min · zhengcf

leetcode-662 - Maximum Width of Binary Tree

July 31, 2021 · 2 min · zhengcf

在github page上用reactjs

July 31, 2021 · 1 min · zhengcf

透過webhook讓github actions rebuild

July 30, 2021 · 1 min · zhengcf

leetcode-442 - Find All Duplicates in an Array

July 29, 2021 · 1 min · zhengcf

leetcode-844 - Backspace String Compare

July 29, 2021 · 2 min · zhengcf

leetcode-637 - Average of Levels in Binary Tree

July 29, 2021 · 1 min · zhengcf

leetcode-203 - Remove Linked List Elements

July 29, 2021 · 1 min · zhengcf

leetcode-876 - Middle of the Linked List

July 29, 2021 · 1 min · zhengcf

leetcode-303 - Range Sum Query - Immutable

July 29, 2021 · 1 min · zhengcf

leetcode-164 - Maximum Gap

July 28, 2021 · 1 min · zhengcf

leetcode-137 - Single Number II

July 28, 2021 · 1 min · zhengcf

leetcode-229 - Majority Element II

July 28, 2021 · 1 min · zhengcf

leetcode-932 - Beautiful Array

July 28, 2021 · 1 min · zhengcf

leetcode-228 - Summary Ranges

July 28, 2021 · 1 min · zhengcf

leetcode-1091 - Shortest Path in Binary Matrix

July 28, 2021 · 2 min · zhengcf

leetcode-218 - The Skyline Problem

July 28, 2021 · 5 min · zhengcf

leetcode-220 - Contains Duplicate III

July 28, 2021 · 1 min · zhengcf

leetcode-284 - Peeking Iterator

July 28, 2021 · 2 min · zhengcf

leetcode-1172 - Dinner Plate Stacks

July 28, 2021 · 3 min · zhengcf

leetcode-51 - N-Queens

July 28, 2021 · 1 min · zhengcf

leetcode-67 - Add Binary

July 28, 2021 · 1 min · zhengcf

leetcode-273 - Integer to English Words

July 28, 2021 · 1 min · zhengcf

leetcode-376 - Wiggle Subsequence

July 28, 2021 · 2 min · zhengcf

leetcode-472 - Concatenated Words

July 28, 2021 · 1 min · zhengcf

leetcode-1275 - Find Winner on a Tic Tac Toe Game

July 27, 2021 · 2 min · zhengcf

leetcode-1679 - Max Number of K-Sum Pairs

July 27, 2021 · 1 min · zhengcf

leetcode-1569 - Number of Ways to Reorder Array to Get Same BST

July 27, 2021 · 2 min · zhengcf

leetcode-278 - First Bad Version

July 27, 2021 · 1 min · zhengcf

leetcode-1691 - Maximum Height by Stacking Cuboids

July 27, 2021 · 2 min · zhengcf

leetcode-733 - Flood Fill

July 27, 2021 · 2 min · zhengcf

leetcode-443 - String Compression

July 27, 2021 · 2 min · zhengcf

leetcode-445 - Add Two Numbers II

July 27, 2021 · 2 min · zhengcf

leetcode-470 - Implement Rand10() Using Rand7()

July 27, 2021 · 2 min · zhengcf

leetcode-290 - Word Pattern

July 27, 2021 · 1 min · zhengcf

leetcode-384 - Shuffle an Array

July 27, 2021 · 2 min · zhengcf

leetcode-796 - Rotate String

July 27, 2021 · 1 min · zhengcf

leetcode-1137 - N-th Tribonacci Number

July 27, 2021 · 1 min · zhengcf

leetcode-518 - Coin Change 2

July 27, 2021 · 1 min · zhengcf

leetcode-232 - Implement Queue using Stacks

July 27, 2021 · 2 min · zhengcf

leetcode-47 - Permutations II

July 27, 2021 · 1 min · zhengcf

leetcode-86 - Partition List

July 27, 2021 · 1 min · zhengcf

leetcode-81 - Search in Rotated Sorted Array II

July 27, 2021 · 2 min · zhengcf

leetcode-110 - Balanced Binary Tree

July 27, 2021 · 1 min · zhengcf

leetcode-643 - Maximum Average Subarray I

July 27, 2021 · 1 min · zhengcf

leetcode-187 - Repeated DNA Sequences

July 27, 2021 · 1 min · zhengcf

leetcode-567 - Permutation in String

July 27, 2021 · 1 min · zhengcf

leetcode-600 - Non-negative Integers without Consecutive Ones

July 26, 2021 · 2 min · zhengcf

leetcode的問題集

July 26, 2021 · 1 min · zhengcf

leetcode-90 - Subsets II

July 26, 2021 · 1 min · zhengcf

leetcode-24 - Swap Nodes in Pairs

July 25, 2021 · 1 min · zhengcf

leetcode-118 - Pascal’s Triangle

July 25, 2021 · 1 min · zhengcf

leetcode-29 - Divide Two Integers

July 25, 2021 · 2 min · zhengcf

leetcode-341 - Flatten Nested List Iterator

July 25, 2021 · 2 min · zhengcf

leetcode-140 - Word Break II

July 25, 2021 · 1 min · zhengcf

leetcode-329 - Longest Increasing Path in a Matrix

July 25, 2021 · 1 min · zhengcf

leetcode-210 - Course Schedule II

July 25, 2021 · 2 min · zhengcf

leetcode-32 - Longest Valid Parentheses

July 25, 2021 · 4 min · zhengcf

leetcode-84 - Largest Rectangle in Histogram

July 25, 2021 · 1 min · zhengcf

leetcode-85 - Maximal Rectangle

July 25, 2021 · 2 min · zhengcf

leetcode-87 - Scramble String

July 25, 2021 · 4 min · zhengcf

leetcode-116 - Populating Next Right Pointers in Each Node

July 25, 2021 · 1 min · zhengcf

leetcode-204 - Count Primes

July 25, 2021 · 1 min · zhengcf

leetcode-328 - Odd Even Linked List

July 25, 2021 · 1 min · zhengcf

leetcode-326 - Power of Three

July 25, 2021 · 1 min · zhengcf

leetcode-350 - Intersection of Two Arrays II

July 25, 2021 · 1 min · zhengcf

leetcode-344 - Reverse String

July 24, 2021 · 1 min · zhengcf

leetcode-412 - Fizz Buzz

July 24, 2021 · 1 min · zhengcf

leetcode-237 - Delete Node in a Linked List

July 24, 2021 · 1 min · zhengcf

leetcode-150 - Evaluate Reverse Polish Notation

July 24, 2021 · 2 min · zhengcf

leetcode-130 - Surrounded Regions

July 24, 2021 · 2 min · zhengcf

leetcode-88 - Merge Sorted Array

July 24, 2021 · 2 min · zhengcf

leetcode-69 - Sqrt(x)

July 24, 2021 · 1 min · zhengcf

leetcode-66 - Plus One

July 24, 2021 · 1 min · zhengcf

leetcode-44 - Wildcard Matching

July 24, 2021 · 2 min · zhengcf

leetcode-28 - Implement strStr()

July 24, 2021 · 1 min · zhengcf

leetcode-26 - Remove Duplicates from Sorted Array

July 24, 2021 · 2 min · zhengcf

leetcode-14 - Longest Common Prefix

July 24, 2021 · 1 min · zhengcf

leetcode-13 - Roman to Integer

July 24, 2021 · 2 min · zhengcf

leetcode-114 - Flatten Binary Tree to Linked List

July 24, 2021 · 1 min · zhengcf

leetcode-621 - Task Scheduler

July 24, 2021 · 3 min · zhengcf

leetcode-199 - Binary Tree Right Side View

July 24, 2021 · 1 min · zhengcf

leetcode-96 - Unique Binary Search Trees

July 24, 2021 · 1 min · zhengcf

leetcode-221 - Maximal Square

July 24, 2021 · 1 min · zhengcf

leetcode-337 - House Robber III

July 24, 2021 · 1 min · zhengcf

leetcode-394 - Decode String

July 24, 2021 · 2 min · zhengcf

leetcode-437 - Path Sum III

July 24, 2021 · 2 min · zhengcf

leetcode-494 - Target Sum

July 23, 2021 · 2 min · zhengcf

leetcode-64 - Minimum Path Sum

July 23, 2021 · 1 min · zhengcf

leetcode-42 - Trapping Rain Water

July 23, 2021 · 2 min · zhengcf

leetcode-189 - Rotate Array

July 23, 2021 · 1 min · zhengcf

leetcode-236 - Lowest Common Ancestor of a Binary Tree

July 23, 2021 · 2 min · zhengcf

leetcode-75 - Sort Colors

July 23, 2021 · 1 min · zhengcf

leetcode-7 - Reverse Integer

July 23, 2021 · 1 min · zhengcf

leetcode-169 - Majority Element

July 23, 2021 · 1 min · zhengcf

leetcode-94 - Binary Tree Inorder Traversal

July 23, 2021 · 1 min · zhengcf

leetcode-101 - Symmetric Tree

July 23, 2021 · 1 min · zhengcf

leetcode-155 - Min Stack

July 23, 2021 · 1 min · zhengcf

leetcode-215 - Kth Largest Element in an Array

July 23, 2021 · 1 min · zhengcf

leetcode-234 - Palindrome Linked List

July 23, 2021 · 1 min · zhengcf

leetcode-240 - Search a 2D Matrix II

July 23, 2021 · 1 min · zhengcf

leetcode-279 - Perfect Squares

July 23, 2021 · 1 min · zhengcf

leetcode-287 - Find the Duplicate Number

July 23, 2021 · 2 min · zhengcf

leetcode-34 - Find First and Last Position of Element in Sorted Array

July 22, 2021 · 1 min · zhengcf

leetcode-17 - Letter Combinations of a Phone Number

July 22, 2021 · 1 min · zhengcf

leetcode-136 - Single Number

July 22, 2021 · 1 min · zhengcf

leetcode-138 - Copy List with Random Pointer

July 22, 2021 · 2 min · zhengcf

leetcode-417 - Pacific Atlantic Water Flow

July 22, 2021 · 2 min · zhengcf

leetcode-424 - Longest Repeating Character Replacement

July 22, 2021 · 2 min · zhengcf

leetcode-143 - Reorder List

July 22, 2021 · 1 min · zhengcf

leetcode-76 - Minimum Window Substring

July 22, 2021 · 3 min · zhengcf

leetcode-295 - Find Median from Data Stream

July 22, 2021 · 2 min · zhengcf

leetcode-152 - Maximum Product Subarray

July 22, 2021 · 1 min · zhengcf

leetcode-128 - Longest Consecutive Sequence

July 22, 2021 · 1 min · zhengcf

leetcode-91 - Decode Ways

July 22, 2021 · 2 min · zhengcf

leetcode-79 - Word Search

July 21, 2021 · 1 min · zhengcf

leetcode-207 - Course Schedule

July 21, 2021 · 2 min · zhengcf

leetcode-268 - Missing Number

July 21, 2021 · 2 min · zhengcf

leetcode-242 - Valid Anagram

July 21, 2021 · 1 min · zhengcf

leetcode-238 - Product of Array Except Self

July 21, 2021 · 1 min · zhengcf

leetcode-371 - Sum of Two Integers

July 21, 2021 · 2 min · zhengcf

leetcode-73 - Set Matrix Zeroes

July 20, 2021 · 1 min · zhengcf

leetcode-235 - Lowest Common Ancestor of a Binary Search Tree

July 20, 2021 · 1 min · zhengcf

leetcode-124 - Binary Tree Maximum Path Sum

July 20, 2021 · 1 min · zhengcf

leetcode-54 - Spiral Matrix

July 20, 2021 · 1 min · zhengcf

leetcode-48 - Rotate Image

July 20, 2021 · 2 min · zhengcf

leetcode-572 - Subtree of Another Tree

July 20, 2021 · 2 min · zhengcf

leetcode-19 - Remove Nth Node From End of List

July 20, 2021 · 1 min · zhengcf

leetcode-133 - Clone Graph

July 20, 2021 · 2 min · zhengcf

leetcode-11 - Container With Most Water

July 20, 2021 · 1 min · zhengcf

leetcode-139 - Word Break

July 20, 2021 · 2 min · zhengcf

leetcode-153 - Find Minimum in Rotated Sorted Array

July 20, 2021 · 1 min · zhengcf

leetcode-98 - Validate Binary Search Tree

July 20, 2021 · 1 min · zhengcf

leetcode-8 - String to Integer (atoi)

July 20, 2021 · 3 min · zhengcf

leetcode-929 - Unique Email Addresses

July 20, 2021 · 2 min · zhengcf

leetcode-106 - Construct Binary Tree from Inorder and Postorder Traversal

July 20, 2021 · 1 min · zhengcf

leetcode-105 - Construct Binary Tree from Preorder and Inorder Traversal

July 20, 2021 · 1 min · zhengcf

leetcode-198 - House Robber

July 20, 2021 · 2 min · zhengcf

leetcode-209 - Minimum Size Subarray Sum

July 20, 2021 · 2 min · zhengcf

leetcode-560 - Subarray Sum Equals K

July 20, 2021 · 2 min · zhengcf

leetcode-82 - Remove Duplicates from Sorted List II

July 20, 2021 · 1 min · zhengcf

leetcode-83 - Remove Duplicates from Sorted List

July 20, 2021 · 1 min · zhengcf

leetcode-347 - Top K Frequent Elements

July 20, 2021 · 1 min · zhengcf

leetcode-392 - Is Subsequence

July 20, 2021 · 1 min · zhengcf

leetcode-695 - Max Area of Island

July 19, 2021 · 1 min · zhengcf

leetcode-103 - Binary Tree Zigzag Level Order Traversal

July 19, 2021 · 1 min · zhengcf

leetcode-102 - Binary Tree Level Order Traversal

July 19, 2021 · 1 min · zhengcf

leetcode-387 - First Unique Character in a String

July 18, 2021 · 1 min · zhengcf

leetcode-300 - Longest Increasing Subsequence

July 18, 2021 · 1 min · zhengcf

leetcode-283 - Move Zeroes

July 18, 2021 · 1 min · zhengcf

leetcode-349 - Intersection of Two Arrays

July 18, 2021 · 1 min · zhengcf

leetcode-111 - Minimum Depth of Binary Tree

July 18, 2021 · 1 min · zhengcf

leetcode-78 - Subsets

July 18, 2021 · 1 min · zhengcf

leetcode-46 - Permutations

July 18, 2021 · 1 min · zhengcf

leetcode-63 - Unique Paths II

July 18, 2021 · 1 min · zhengcf

leetcode-125 - Valid Palindrome

July 18, 2021 · 1 min · zhengcf

leetcode-108 - Convert Sorted Array to Binary Search Tree

July 18, 2021 · 1 min · zhengcf

leetcode-226 - Invert Binary Tree

July 17, 2021 · 1 min · zhengcf

leetcode-39 - Combination Sum

July 17, 2021 · 2 min · zhengcf

leetcode-35 - Search Insert Position

July 17, 2021 · 1 min · zhengcf

leetcode-22 - Generate Parentheses

July 17, 2021 · 1 min · zhengcf

leetcode-2 - Add Two Numbers

July 17, 2021 · 2 min · zhengcf

leetcode-617 - Merge Two Binary Trees

July 16, 2021 · 1 min · zhengcf

leetcode-21 - Merge Two Sorted Lists

July 16, 2021 · 1 min · zhengcf

leetcode-206 - Reverse Linked List

July 16, 2021 · 1 min · zhengcf

leetcode-142 - Linked List Cycle II

July 16, 2021 · 2 min · zhengcf

leetcode-50 - Pow(x, n)

July 16, 2021 · 1 min · zhengcf

leetcode-112 - Path Sum

July 16, 2021 · 1 min · zhengcf

leetcode-104 - Maximum Depth of Binary Tree

July 16, 2021 · 1 min · zhengcf

leetcode-3 - Longest Substring Without Repeating Characters

July 16, 2021 · 1 min · zhengcf

leetcode-23 - Merge k Sorted Lists

July 16, 2021 · 1 min · zhengcf

leetcode-322 - Coin Change

July 16, 2021 · 2 min · zhengcf

leetcode-20 - Valid Parentheses

July 16, 2021 · 1 min · zhengcf

leetcode-62 - Unique Paths

July 16, 2021 · 1 min · zhengcf

leetcode-33 - Search in Rotated Sorted Array

July 16, 2021 · 2 min · zhengcf

leetcode-70 - Climbing Stairs

July 16, 2021 · 1 min · zhengcf

leetcode-15 - 3Sum

July 16, 2021 · 1 min · zhengcf

top half & bottom half & workqueue & device範例集

July 15, 2021 · 7 min · zhengcf

leetcode-141 - Linked List Cycle

July 14, 2021 · 2 min · zhengcf

leetcode-100 - Same Tree

July 14, 2021 · 1 min · zhengcf

leetcode-53 - Maximum Subarray

July 14, 2021 · 2 min · zhengcf

leetcode-1 - Two Sum

July 14, 2021 · 1 min · zhengcf

The little prover 筆記

July 14, 2021 · 15 min · zhengcf

kmp-algorithm

July 11, 2021 · 1 min · zhengcf

leetcode-456 - 132 Pattern

July 10, 2021 · 1 min · zhengcf

bst的faq

July 10, 2021 · 2 min · zhengcf

leetcode-25 - Reverse Nodes in k-Group

July 10, 2021 · 2 min · zhengcf

linked-list的faq

July 10, 2021 · 1 min · zhengcf

competitive programming的tips

July 9, 2021 · 9 min · zhengcf

A little java, a few patterns筆記

July 7, 2021 · 14 min · zhengcf

bit tricks

July 5, 2021 · 2 min · zhengcf

ansible tips

July 5, 2021 · 2 min · zhengcf

leetcode-Concurrency

July 4, 2021 · 4 min · zhengcf

system-design的faq

July 4, 2021 · 3 min · zhengcf

linking的種類

July 2, 2021 · 4 min · zhengcf

gdb使用筆記

July 1, 2021 · 2 min · zhengcf

bpf使用筆記

July 1, 2021 · 3 min · zhengcf

June  12

flamegraph筆記

June 30, 2021 · 1 min · zhengcf

systemtap使用筆記

June 30, 2021 · 2 min · zhengcf

grep常用整理

June 28, 2021 · 1 min · zhengcf

jq使用筆記

June 28, 2021 · 2 min · zhengcf

用twisted迅速架簡單的server

June 28, 2021 · 1 min · zhengcf

記憶體模型筆記

June 27, 2021 · 4 min · zhengcf

Linux Kernel Development 3rd筆記

June 26, 2021 · 6 min · zhengcf

windows上用win10的pxe檔案與架pxe server

June 24, 2021 · 2 min · zhengcf

Green Threads Explained筆記

June 23, 2021 · 2 min · zhengcf

keepassxc同步db與自動開db

June 19, 2021 · 2 min · zhengcf

圖解linux核心工作原理整理

June 13, 2021 · 3 min · zhengcf

改Manga-Loader的心得與一些方法

June 9, 2021 · 5 min · zhengcf

February  11

英文文法隨便筆記

February 28, 2021 · 1 min · zhengcf

The Pragmatic Programmer快速翻閱節錄

February 21, 2021 · 1 min · zhengcf

leetcode-493 - Reverse Pairs

February 20, 2021 · 2 min · zhengcf

leetcode-327 - Count of Range Sum

February 20, 2021 · 3 min · zhengcf

binary index tree

February 20, 2021 · 1 min · zhengcf

leetcode-307 - Range Sum Query - Mutable

February 20, 2021 · 3 min · zhengcf

設定windows-mail出現0x80070490的錯誤碼

February 14, 2021 · 1 min · zhengcf

daemonize與sig與pgid

February 6, 2021 · 1 min · zhengcf

js的proto與metaclass

February 1, 2021 · 1 min · zhengcf

apply patch到在不同資料夾不同的檔案名的檔案

February 1, 2021 · 1 min · zhengcf

git conflict 與 three-ways-merge

February 1, 2021 · 1 min · zhengcf

January  66

bigO對應到的input大小

January 31, 2021 · 1 min · zhengcf

leetcode-230 - Kth Smallest Element in a BST

January 31, 2021 · 1 min · zhengcf

leetcode-123 - Best Time to Buy and Sell Stock III

January 31, 2021 · 2 min · zhengcf

leetcode-714 - Best Time to Buy and Sell Stock with Transaction Fee

January 31, 2021 · 2 min · zhengcf

leetcode-309 - Best Time to Buy and Sell Stock with Cooldown

January 31, 2021 · 2 min · zhengcf

leetcode-121 - Best Time to Buy and Sell Stock

January 31, 2021 · 1 min · zhengcf

leetcode-395 - Longest Substring with At Least K Repeating Characters

January 31, 2021 · 2 min · zhengcf

leetcode-779 - K-th Symbol in Grammar

January 31, 2021 · 2 min · zhengcf

leetcode-523 - Continuous Subarray Sum

January 31, 2021 · 2 min · zhengcf

leetcode-763 - Partition Labels

January 31, 2021 · 1 min · zhengcf

leetcode-581 - Shortest Unsorted Continuous Subarray

January 31, 2021 · 2 min · zhengcf

leetcode-647 - Palindromic Substrings

January 31, 2021 · 1 min · zhengcf

leetcode-406 - Queue Reconstruction by Height

January 30, 2021 · 2 min · zhengcf

leetcode-739 - Daily Temperatures

January 30, 2021 · 1 min · zhengcf

leetcode-166 - Fraction to Recurring Decimal

January 30, 2021 · 1 min · zhengcf

leetcode-212 - Word Search II

January 30, 2021 · 2 min · zhengcf

leetcode-239 - Sliding Window Maximum

January 30, 2021 · 2 min · zhengcf

leetcode-653 - Two Sum IV - Input is a BST

January 30, 2021 · 2 min · zhengcf

leetcode-438 - Find All Anagrams in a String

January 30, 2021 · 2 min · zhengcf

leetcode-416 - Partition Equal Subset Sum

January 30, 2021 · 1 min · zhengcf

leetcode-149 - Max Points on a Line

January 30, 2021 · 1 min · zhengcf

leetcode-297 - Serialize and Deserialize Binary Tree

January 30, 2021 · 2 min · zhengcf

leetcode-131 - Palindrome Partitioning

January 30, 2021 · 1 min · zhengcf

leetcode-543 - Diameter of Binary Tree

January 30, 2021 · 1 min · zhengcf

leetcode-414 - Third Maximum Number

January 30, 2021 · 1 min · zhengcf

leetcode-448 - Find All Numbers Disappeared in an Array

January 30, 2021 · 1 min · zhengcf

leetcode-324 - Wiggle Sort II

January 30, 2021 · 2 min · zhengcf

leetcode-211 - Design Add and Search Words Data Structure

January 30, 2021 · 2 min · zhengcf

leetcode-373 - Find K Pairs with Smallest Sums

January 30, 2021 · 2 min · zhengcf

leetcode-377 - Combination Sum IV

January 29, 2021 · 1 min · zhengcf

leetcode-6 - ZigZag Conversion

January 29, 2021 · 2 min · zhengcf

leetcode-57 - Insert Interval

January 29, 2021 · 1 min · zhengcf

leetcode-435 - Non-overlapping Intervals

January 29, 2021 · 1 min · zhengcf

leetcode-127 - Word Ladder

January 29, 2021 · 3 min · zhengcf

leetcode-190 - Reverse Bits

January 29, 2021 · 2 min · zhengcf

leetcode-315 - Count of Smaller Numbers After Self

January 29, 2021 · 1 min · zhengcf

leetcode-1011 - Capacity To Ship Packages Within D Days

January 29, 2021 · 4 min · zhengcf

leetcode-289 - Game of Life

January 18, 2021 · 3 min · zhengcf

leetcode-171 - Excel Sheet Column Number

January 18, 2021 · 1 min · zhengcf

leetcode-202 - Happy Number

January 18, 2021 · 1 min · zhengcf

leetcode-160 - Intersection of Two Linked Lists

January 18, 2021 · 3 min · zhengcf

leetcode-148 - Sort List

January 18, 2021 · 1 min · zhengcf

leetcode-38 - Count and Say

January 18, 2021 · 2 min · zhengcf

leetcode-454 - 4Sum II

January 18, 2021 · 1 min · zhengcf

leetcode-219 - Contains Duplicate II

January 18, 2021 · 1 min · zhengcf

leetcode-380 - Insert Delete GetRandom O(1)

January 18, 2021 · 2 min · zhengcf

leetcode-134 - Gas Station

January 18, 2021 · 2 min · zhengcf

leetcode-179 - Largest Number

January 18, 2021 · 2 min · zhengcf

leetcode-208 - Implement Trie (Prefix Tree)

January 17, 2021 · 2 min · zhengcf

leetcode-55 - Jump Game

January 17, 2021 · 2 min · zhengcf

leetcode-56 - Merge Intervals

January 17, 2021 · 1 min · zhengcf

leetcode-36 - Valid Sudoku

January 17, 2021 · 2 min · zhengcf

leetcode-191 - Number of 1 Bits

January 17, 2021 · 2 min · zhengcf

leetcode-877 - Stone Game

January 9, 2021 · 2 min · zhengcf

system design primer筆記 範例篇

January 9, 2021 · 2 min · zhengcf

system design primer筆記 設計流程與估算篇

January 7, 2021 · 1 min · zhengcf

system design primer筆記 工具篇

January 7, 2021 · 3 min · zhengcf

leetcode-188 - Best Time to Buy and Sell Stock IV

January 3, 2021 · 3 min · zhengcf

leetcode-217 - Contains Duplicate

January 3, 2021 · 1 min · zhengcf

leetcode-172 - Factorial Trailing Zeroes

January 3, 2021 · 2 min · zhengcf

leetcode-334 - Increasing Triplet Subsequence

January 3, 2021 · 1 min · zhengcf

leetcode-378 - Kth Smallest Element in a Sorted Matrix

January 2, 2021 · 3 min · zhengcf

leetcode-1261 - Find Elements in a Contaminated Binary Tree

January 2, 2021 · 2 min · zhengcf

leetcode-703 - Kth Largest Element in a Stream

January 1, 2021 · 1 min · zhengcf

leetcode-678 - Valid Parenthesis String

January 1, 2021 · 2 min · zhengcf

leetcode-45 - Jump Game II

January 1, 2021 · 2 min · zhengcf

2020  87

December  28

binary-search最佳實踐

December 31, 2020 · 1 min · zhengcf

leetcode-274 - H-Index

December 31, 2020 · 1 min · zhengcf

leetcode-49 - Group Anagrams

December 31, 2020 · 1 min · zhengcf

leetcode-292 - Nim Game

December 31, 2020 · 1 min · zhengcf

leetcode-162 - Find Peak Element

December 31, 2020 · 1 min · zhengcf

leetcode-275 - H-Index II

December 30, 2020 · 2 min · zhengcf

leetcode-1046 - Last Stone Weight

December 29, 2020 · 2 min · zhengcf

leetcode-692 - Top K Frequent Words

December 29, 2020 · 2 min · zhengcf

leetcode-313 - Super Ugly Number

December 29, 2020 · 2 min · zhengcf

leetcode-451 - Sort Characters By Frequency

December 28, 2020 · 1 min · zhengcf

leetcode-41 - First Missing Positive

December 28, 2020 · 1 min · zhengcf

leetcode-122 - Best Time to Buy and Sell Stock II

December 28, 2020 · 2 min · zhengcf

leetcode-146 - LRU Cache

December 28, 2020 · 2 min · zhengcf

leetcode-460 - LFU Cache

December 28, 2020 · 3 min · zhengcf

cpp的Value Categories

December 27, 2020 · 1 min · zhengcf

bash的字串操作

December 27, 2020 · 2 min · zhengcf

bash上做集合操作

December 26, 2020 · 1 min · zhengcf

await 與 async 與 promise

December 26, 2020 · 1 min · zhengcf

cpp的std::move

December 26, 2020 · 1 min · zhengcf

Maximum Subarray Sum

December 20, 2020 · 1 min · zhengcf

Longest Increasing Subsequence

December 20, 2020 · 1 min · zhengcf

saddleback search algorithm

December 20, 2020 · 1 min · zhengcf

C/C++的FAQ

December 20, 2020 · 9 min · zhengcf

C++ template meta-programming筆記

December 19, 2020 · 6 min · zhengcf

二分搜尋與two pointer

December 12, 2020 · 3 min · zhengcf

leetcode-312 - Burst Balloons

December 12, 2020 · 2 min · zhengcf

進擊的regex

December 8, 2020 · 1 min · zhengcf

leetcode-72 - Edit Distance

December 6, 2020 · 1 min · zhengcf

November  14

OpenSource授權

November 11, 2020 · 2 min · zhengcf

leetcode-4 - Median of Two Sorted Arrays

November 7, 2020 · 2 min · zhengcf

leetcode-338 - Counting Bits

November 3, 2020 · 1 min · zhengcf

leetcode-213 - House Robber II

November 3, 2020 · 2 min · zhengcf

leetcode-304 - Range Sum Query 2D - Immutable

November 3, 2020 · 3 min · zhengcf

leetcode-200 - Number of Islands

November 3, 2020 · 1 min · zhengcf

leetcode-120 - Triangle

November 2, 2020 · 1 min · zhengcf

下一/前一排序

November 2, 2020 · 1 min · zhengcf

leetcode-10 - Regular Expression Matching

November 2, 2020 · 2 min · zhengcf

leetcode-5 - Longest Palindromic Substring

November 2, 2020 · 3 min · zhengcf

leetcode-227 - Basic Calculator II

November 2, 2020 · 2 min · zhengcf

leetcode-721 - Accounts Merge

November 2, 2020 · 2 min · zhengcf

leetcode-43 - Multiply Strings

November 2, 2020 · 2 min · zhengcf

leetcode-31 - Next Permutation

November 2, 2020 · 2 min · zhengcf

October  6

各種make

October 19, 2020 · 2 min · zhengcf

netns與虛擬網路裝置

October 17, 2020 · 2 min · zhengcf

metaclass - class與instance的融合

October 17, 2020 · 5 min · zhengcf

rails常見面試問題整理

October 5, 2020 · 4 min · zhengcf

ruby奇妙的繼承

October 5, 2020 · 1 min · zhengcf

Global Interpreter Lock

October 5, 2020 · 1 min · zhengcf

September  6

奇聞軼事 - condition variable

September 13, 2020 · 2 min · zhengcf

tcpdunp條件式語法整理

September 6, 2020 · 2 min · zhengcf

blackhat python - windows

September 6, 2020 · 12 min · zhengcf

blackhat python - github & automation

September 5, 2020 · 2 min · zhengcf

blackhat python - web

September 5, 2020 · 7 min · zhengcf

blackhat python - network programming

September 4, 2020 · 21 min · zhengcf

August  13

nginx的簡單survey

August 29, 2020 · 4 min · zhengcf

奇聞軼事-buildroot的坑

August 23, 2020 · 1 min · zhengcf

C++的左右值

August 16, 2020 · 1 min · zhengcf

改kernel的注意事項

August 16, 2020 · 2 min · zhengcf

k8s筆記

August 15, 2020 · 5 min · zhengcf

dockerfile的最佳實踐整理

August 9, 2020 · 1 min · zhengcf

dockerfile的用法

August 9, 2020 · 2 min · zhengcf

memory model

August 5, 2020 · 1 min · zhengcf

奇聞軼事 - 把程式port到其他或舊平台運行

August 2, 2020 · 1 min · zhengcf

奇聞軼事 - 死掉的write

August 2, 2020 · 1 min · zhengcf

sql效能survey

August 2, 2020 · 2 min · zhengcf

vlan筆記

August 1, 2020 · 1 min · zhengcf

網路如何送資料

August 1, 2020 · 1 min · zhengcf

July  7

Seven-Concurrency-Models-in-Seven-Weeks 部分筆記

July 31, 2020 · 1 min · zhengcf

leetcode上的sql題

July 26, 2020 · 5 min · zhengcf

design pattern隨便筆記

July 25, 2020 · 2 min · zhengcf

db正規化的隨便筆記

July 21, 2020 · 1 min · zhengcf

隨意iptables筆記

July 19, 2020 · 1 min · zhengcf

隨便的sql筆記

July 18, 2020 · 5 min · zhengcf

leetcode的bash題目們

July 11, 2020 · 2 min · zhengcf

June  2

git筆記

June 15, 2020 · 1 min · zhengcf

設定vscode的c++ format

June 13, 2020 · 1 min · zhengcf

May  6

The Little MLer 筆記

May 24, 2020 · 6 min · zhengcf

little typer 後篇(8~16) 整理與筆記

May 16, 2020 · 10 min · zhengcf

little typer 前篇(1~7) 整理與筆記

May 16, 2020 · 2 min · zhengcf

在不同context下的sync與async(與block&non-block比較)

May 4, 2020 · 2 min · zhengcf

有趣與有用的es6特性

May 4, 2020 · 2 min · zhengcf

monad推導，主要是cont monad

May 4, 2020 · 3 min · zhengcf

April  5

JS一些概念的整理

April 21, 2020 · 2 min · zhengcf

Rebuilding Rails的心得

April 17, 2020 · 7 min · zhengcf

The Seasoned Schemer讀後筆記

April 15, 2020 · 5 min · zhengcf

The Little Schemer讀後筆記

April 15, 2020 · 7 min · zhengcf

ubuntu-mirror

April 15, 2020 · 1 min · zhengcf