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关于C++和C的区别区别最大的是struct,C++中的struct几乎和class一样了,可以有成员函数,而C中的struct只能包含成员变量。 enum,union没区别。struct的定义struct 结构标签{ 类型1 标识符1; 类型2 标识符2; ...
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posted @ 2015-09-01 21:49
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题目Implement pow(x, n).Show Tags Show Similar Problems分析一个不利用标准幂次函数的,求幂算法实现。参考了一个很好的解析博客:Pow(x,n)问题详解AC代码class Solution {public: double myP...
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posted @ 2015-09-01 20:57
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题目Given an array of strings, group anagrams together.For example, given: [“eat”, “tea”, “tan”, “ate”, “nat”, “bat”], Return:[ [“ate”, “eat...
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posted @ 2015-09-01 20:28
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题目You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up: Could you do this in-place?分析本...
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posted @ 2015-08-31 20:49
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题目Given a collection of numbers that might contain duplicates, return all possible unique permutations.For example, [1,1,2] have the followin...
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posted @ 2015-08-31 20:15
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题目Given a collection of numbers, return all possible permutations.For example, [1,2,3] have the following permutations: [1,2,3], [1,3,2], [2,...
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posted @ 2015-08-31 20:07
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1.1. primitive system data types(包含很多类型重定义,如pid_t、int8_t等)1.2. //与套接字相关的函数声明和结构体定义,如socket()、bind()、connect()及struct sockaddr的定义等int set...
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posted @ 2015-08-31 17:28
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题目Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbitrarily large and a...
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posted @ 2015-08-28 17:42
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new与delete我们知道,new和delete运算符是用于动态分配和撤销内存的运算符。new的用法开辟单变量地址空间; i. 如 new int ; 指开辟一个存放数组的存储空间,返回一个指向该存储空间的地址。int *a = new int 即为将一个int类型的地址...
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posted @ 2015-08-26 20:01
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题目Given an unsorted integer array, find the first missing positive integer.For example, Given [1,2,0] return 3, and [3,4,-1,1] return 2.Your ...
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posted @ 2015-08-26 17:31
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