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用栈实现队列-用队列实现栈
用栈实现队列 leetcode : Implement Queue using Stacks   Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue.pop() -- Removes the element ...
分类:其他好文   时间:2015-08-02 16:53:21    阅读次数:141
【LeetCode】232 - Implement Queue using Stacks
Implement the following operations of a queue using stacks.push(x) -- Push element x to the back of queue.pop() -- Removes the element from in front o...
分类:其他好文   时间:2015-08-02 15:02:17    阅读次数:82
【LeetCode】206 - Reverse Linked List
Reverse a singly linked list.Hint:A linked list can be reversed either iteratively or recursively. Could you implement both?Solution 1:iteration 1 /**...
分类:其他好文   时间:2015-08-02 14:57:55    阅读次数:117
LeetCode146: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 value (will always be positive) of the key if ...
分类:系统相关   时间:2015-08-02 11:54:16    阅读次数:159
Sqrt(x)
Question Implement int sqrt(int x). Compute and return the square root of x. My Solution class Solution { public: int mySqrt(int x) { /** * binary search a from [0, x], where a^2 = x....
分类:其他好文   时间:2015-08-01 22:06:03    阅读次数:87
LeetCode#31 Next Permutation
Problem Definition:Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers.If such arrange...
分类:其他好文   时间:2015-08-01 21:57:44    阅读次数:94
【LeetCode 50】Pow(x, n)
Implement pow(x,n).思路: 实现pow(x,n)函数。首先,可以n次连乘x,但是这样太慢了。加速:2^10 -> 4^5 -> 16^2 * 4 ->256^1 * 4C++: 1 class Solution { 2 public: 3 double myPow(dou...
分类:其他好文   时间:2015-08-01 15:32:20    阅读次数:122
[LeetCode]232.Implement Queue using Stacks
题目Implement the following operations of a queue using stacks.push(x) – Push element x to the back of queue. pop() – Removes the element from in front of queue. peek() – Get the front element. empty(...
分类:其他好文   时间:2015-08-01 10:08:20    阅读次数:120
LeetCode:String to Integer (atoi)
1、题目名称 String to Integer (atoi) (字符串到数字的转换) 2、题目地址 https://leetcode.com/problems/string-to-integer-atoi/ 3、题目内容 英文:Implement atoi to convert a string to an integer. 中文...
分类:其他好文   时间:2015-07-31 23:43:03    阅读次数:432
Snail—UI学习之UITableView之分组显示
之前的demo都是一个分组显示数据的 这次我们用的是带有分组的tableView #import "WJJRootViewController.h" @interface WJJRootViewController (){ UITableView * _tableView; NSMutableArray * _dataArray; } @end @implement...
分类:其他好文   时间:2015-07-31 20:29:20    阅读次数:188
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