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27 Remove Element
27 Remove Element链接:https://leetcode.com/problems/remove-element/ 问题描述: Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be...
分类:其他好文   时间:2015-07-13 14:06:04    阅读次数:79
Find Minimum in Rotated Sorted Array
https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/ 1 class Solution { 2 public: 3 int findMin(vector& nums) { 4 int size=...
分类:其他好文   时间:2015-07-13 13:45:49    阅读次数:118
树中两个节点的最低公共祖先
树是二叉查找树的情况题目来自LeetCode:https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/ Lowest Common Ancestor of a Binary Search Tree Total Accepted: 3402 Total Submissions: 8709 My Subm...
分类:其他好文   时间:2015-07-13 12:10:38    阅读次数:112
Merge Two Sorted Lists
https://leetcode.com/problems/merge-two-sorted-lists/ 1 /** 2 * Definition for singly-linked list. 3 * struct ListNode { 4 * int val; 5 * ...
分类:其他好文   时间:2015-07-13 11:56:41    阅读次数:113
Unique Paths
https://leetcode.com/problems/unique-paths/递归问题转换成动态规划问题。每个问题可以分解成p[m][n]=p[m-1][n]+p[m][n-1]动态规划:做一个动态二维数组,用于存放每步的解。最终的循环就是矩阵的所有点遍历一遍。时间复杂度为m*n的矩阵遍历。...
分类:其他好文   时间:2015-07-13 11:43:00    阅读次数:108
18 4Sum
18 4Sum链接:https://leetcode.com/problems/4sum/ 问题描述: Given 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 w...
分类:其他好文   时间:2015-07-13 10:29:38    阅读次数:120
125 Valid Palindrome
125 Valid Palindrome链接:https://leetcode.com/problems/valid-palindrome/ 问题描述: Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For exampl...
分类:其他好文   时间:2015-07-13 10:17:15    阅读次数:145
【leetcode】Largest Rectangle in Histogram
题目信息如下: 1、题目地址为:https://leetcode.com/problems/largest-rectangle-in-histogram/ 2、题目意思为: 给定一个非负数组height,代表了矩形的高度(其中矩形宽度为1),求在其中能找出最大的矩形面积。 3、给的例子为: height = [2,1,5,6,2,3]. 输出为:10.示意图如下 那么...
分类:其他好文   时间:2015-07-12 21:43:49    阅读次数:105
Climbing Stairs
https://leetcode.com/problems/climbing-stairs/ 1 class Solution { 2 public: 3 int climbStairs(int n) { 4 if(n==1) 5 return 1; ...
分类:其他好文   时间:2015-07-12 17:09:48    阅读次数:107
Lowest Common Ancestor of a Binary Search Tree
https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/Given a binary search tree (BST), find the lowest common ancestor (LCA) o...
分类:其他好文   时间:2015-07-11 16:18:22    阅读次数:127
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