碧海恋天的博客

内存中的数据对齐先看个例子：#include struct { short sA; short sB; short sC;}A;struct { long lA; short sB;}B;struct { char chA; int iB; char chC;}C;struct { char chA; char chB; int iC;}D;s

Combination SumGiven a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.The same repeated number may be c

PermutationsGiven a collection of numbers, return all possible permutations.For example,[1,2,3] have the following permutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], and [3,2,

Climbing StairsYou are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you climb to the top?/** 整理的

AnagramsGiven an array of strings, return all groups of strings that are anagrams.Note: All inputs will be in lower-case.什么是anagrams？/** 整理的提交代码 * 处理复杂度为O(n)，n是字符串个数，但是其中有排序等步骤没有固

Add Two NumbersYou are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers

4SumGiven 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 unique quadruplets in the array which gives the sum of target.No

Add BinaryGiven two binary strings, return their sum (also a binary string).For example,a = "11"b = "1"Return "100"./** 整理的提交代码 * 处理复杂度为O(max(n1,n2)) * 主要思路： * 1、先处理特殊情况，有其中一个为空，则

3SumGiven an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero.Note:Elements in

3Sum ClosestGiven an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each in

赋值操作符重载函数形参规格赋值操作符重载函数的形参基本都写为常量引用，返回值为引用。class A{ public: A(int data = 0) : m_data(data) {} ~A() {} A& operator=(const A& other) { if (this == &other) { return *this; } m_data

拷贝构造函数形参规格拷贝构造函数的形参基本都写为常量引用。#include using namespace std;class A{ public: A(int data = 0) : m_data(data) {} ~A() {} A(const A& other) { m_data= other.m_data; } void print() { co

Combination Sum IIGiven a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.Each number in C may on