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Leetcode-LRU Cache
Design and implement a data structure for Least Recently Used (LRU) cache. It should support the following operations: get and set. get(key) - Get the...
分类:系统相关   时间:2014-12-12 01:11:43    阅读次数:374
Signal & Slot in QT
Try your best to provide an mechanism to implement what you want.1. All happen before compiling-time.1 QObject.connect(sender,SIGNAL(signal()), recive...
分类:其他好文   时间:2014-12-10 20:59:27    阅读次数:350
leetcode------Pow(x, n)(3)
标题Pow(x, n)通过率26.1%难度中等Implement pow(x,n). 以为只是单纯的求xn,习惯了用java里面的math.pow(x,n),所以我认为传进来的值都是比较正常的,谁知道竟然会传n<0的数。。。。。直接泪奔,然后再尝试。。。发现栈溢出,也就是说单纯的递归或者非递归针对....
分类:其他好文   时间:2014-12-10 17:47:13    阅读次数:153
Spring事务使用的一个误区
Spring bean 假设有如下类 public class Service implement IService{ @Transactional(readOnly = false, propagation=Propagation.REQUIRED)    public void methodA(){    .....   methodB()   ...... ...
分类:编程语言   时间:2014-12-09 21:28:23    阅读次数:278
Implement strStr()
Implement strStr(). Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. int i,j,k; if(needle[0]=='\0') return 0; for(i=0;haysta...
分类:其他好文   时间:2014-12-09 15:48:41    阅读次数:113
【LeetCode 题解】 LRU Cache
设计并实现最近最久未使用(Least Recently Used)缓存。链接:https://oj.leetcode.com/problems/lru-cache/题目描述:Design and implement a data structure for Least Recently Used (...
分类:系统相关   时间:2014-12-09 15:32:34    阅读次数:320
[leetcode]Pow(x, n)
问题描述: Implement pow(x, n). 基本思想: 将求幂转换为求对数的幂 . 如x^n = exp(n*log(x)); 代码: double pow(double x, int n) { //C++ if(x == 0.0) return 0; if(n == 0) return ...
分类:其他好文   时间:2014-12-07 15:05:48    阅读次数:145
C# 笔试题,看你会几道题
1. Which interface you need to implement to support for each?IEnumeratorIEnumerableIComparerIComparableAll of the aboveNone of the above2. What is the...
分类:Windows程序   时间:2014-12-05 00:42:43    阅读次数:298
算法优化:从1天到1s
最近参加了Coursera的课程,Stanford大学的《算法:设计与分析》。这是一门非常值得学习的课程。在老师布置的作业中,有这样一道题目: The goal of this problem is to implement a variant of the 2-SUM algorithm . The file contains 1 million integers, both pos...
分类:编程语言   时间:2014-12-04 23:15:49    阅读次数:325
LeetCode Pow(x,n)
class Solution { public: double pow(double x,int n) { if(n<0)return 1.0/power(x,-n); return power(x,n); } double power(double x, int n) { if(n == 0) return 1; double temp =...
分类:其他好文   时间:2014-12-03 21:19:09    阅读次数:103
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