原创 通過虛函數表調用虛函數與通過虛函數表(繞過訪問權限控制)
一、背景知識 在講解虛函數的時候，我們知道，如果類中有虛函數，則該類中存在一個虛函數表(V-Table)，每個該類的對象都會有一個指針指向該虛函數表，存儲這類中虛函數的函數指針，而虛函數表的地址就存在該類對象內存的開始
2020-06-08 20:58:06
原创 Permutation Sequence
The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in o
2020-02-25 15:49:40
原创 3Sum Closest
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Re
2020-02-25 15:49:40
原创 4Sum
Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all
2020-02-25 15:49:40
原创 interprocess communication (IPC) 進程間通信
signals, which are used to indicate that an event has occurred; pipes (familiar to shell users as the | operator) andFI
2020-02-25 15:49:40
原创 Edit Distance
Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each operatio
2020-02-25 15:49:40
原创 3Sum
Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets
2020-02-25 15:49:40
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原创 Permutations
Given a collection of numbers, return all possible permutations. For example,[1,2,3] have the following permutations
2020-02-25 15:49:40
原创 Next Permutation
Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.
2020-02-25 15:49:40
原创 print系列函數（formatted output conversion）
printf, fprintf, sprintf, snprintf, vprintf, vfprintf, vsprintf, vsnprintf #include <stdio.h> int p
2020-02-25 15:49:30
原创 Search Insert Position
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it wo
2020-02-25 15:49:30
原创 Permutations II
Given a collection of numbers that might contain duplicates, return all possible unique permutations. For example,[1,
2020-02-25 15:49:30