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【LeetCode】- Length of Last Word(最后一个单词的长度)
[ 问题: ] Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last word does not exist, return 0. [...
分类:其他好文   时间:2014-07-22 23:01:35    阅读次数:331
Leetcode: Remove Elements
一次性通过的,比较顺利,从读题到编写到检查到通过,14分50秒,我在不断进步中,相信经过一段时间联系,这种题可以一眼就写出来,不超过5分钟。这道题应该说方法跟 Remove Duplicates from sorted Array挺类似的My Solution: 1 public class Sol...
分类:其他好文   时间:2014-05-02 12:56:10    阅读次数:260
LeetCode - Trangle
这道题,采用动态规划算法。from top to down,把到每个节点的最小路径和都求出来。下面是AC代码: 1 /** 2 * Given a triangle, find the minimum path sum from top to bottom. 3 * Each ...
分类:其他好文   时间:2014-05-02 12:19:23    阅读次数:382
leetcode: Search a 2D Matrix
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-05-02 10:41:53    阅读次数:267
leetcode: Search Insert Position
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or...
分类:其他好文   时间:2014-05-02 09:54:11    阅读次数:269
Leetcode: Plus One
少数次通过 1 public class Solution { 2 public int[] plusOne(int[] digits) { 3 int[] carry=new int[digits.length+1]; 4 int[] results=new i...
分类:其他好文   时间:2014-05-02 08:23:11    阅读次数:271
Leetcode: Length of Last Word
许多次通过,主要是没有考虑到这种情况:“A C ”结尾有多重空格的情况。 1 public class Solution { 2 public int lengthOfLastWord(String s) { 3 int j, k; 4 if(s == nu...
分类:其他好文   时间:2014-05-02 08:21:00    阅读次数:300
Jump Game
leetcode, Jump Game , 递推求解...
分类:其他好文   时间:2014-05-02 05:10:22    阅读次数:181
[leetcode] Best Time to Buy and Sell Stock
Say you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to complete at most one transaction (ie...
分类:其他好文   时间:2014-05-02 00:37:20    阅读次数:349
Leetcode:Rotate Image 旋转图片
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? 刚开始没有思路,但是自己举了几个简单的栗子才看出规律:需要一圈儿一圈儿的变换位置。有两层for循环:外...
分类:其他好文   时间:2014-05-01 18:33:34    阅读次数:359
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