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Description:Count the number of prime numbers less than a non-negative number, n 提示晒数法：http://en.wikipedia.org/wiki/Sieve_of_Eratostheneshttps://p... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Remove all elements from a linked list of integers that have valueval.ExampleGiven: 1 --> 2 --> 6 --> 3 --> 4 --> 5 --> 6, val = 6Return: 1 --> 2 --... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Write an algorithm to determine if a number is "happy".A happy number is a number defined by the following process: Starting with any positive intege... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Climbing Stairs You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Given two strings s and t, determine if they are isomorphic.Two strings are isomorphic if the characters in s can be replaced to get t.All occ... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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今天看了一个华为西安研究院的一个女生代码大神的总结很有感悟，下面这句话送给大家：只有好的程序员才能写出人类可以理解的代码You are a professional robber planning to rob houses along a street. Each house ha... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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实现效果：这个其实是一个非常常见的功能，大家都会考虑给自己简单的工程做一个背景界面。其实只要在view类中重载OnEraseBkgnd（）这个函数就好了。代码如下：BOOL CdddView::OnEraseBkgnd(CDC* pDC){ // TODO: 在此添加消息处理程... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as 00000010100101000001111010011100)... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Rotate an array of n elements to the right by k steps.For example, with n = 7 and k = 3, the array [1,2,3,4,5,6,7] is rotated to [5,6,7,1,2,3,... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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Given an integer n, return the number of trailing zeroes in n!.Note: Your solution should be in logarithmic time complexity.解决思路： 决定阶乘末尾零的个数其实... 阅读全文
posted @ 2017-11-17 22:28
wangyaning
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