Same Tree
Given two binary trees, write a function to check if they are equal or not.
Two binary trees are considered equal if they are structurally identical and
the n...
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其他好文 时间：
2014-06-19 12:49:17
阅读次数：
301
Happy 2009
Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 2394 Accepted Submission(s): 802
Problem Description
No matter you kn...
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移动开发 时间：
2014-06-19 11:54:54
阅读次数：
272
题目
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Each element in the array represents your maximum jump length at that position.
...
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其他好文 时间：
2014-06-19 11:46:47
阅读次数：
277
Given a binary tree, determine if it is height-balanced.
For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never diffe...
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其他好文 时间：
2014-06-19 11:23:05
阅读次数：
204
题目
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Each element in the array represents your maximum jump length at that position.
...
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其他好文 时间：
2014-06-19 10:05:39
阅读次数：
278
题目
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?
方法
矩阵坐标的转换，循环替换。
public voi...
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其他好文 时间：
2014-06-16 11:28:03
阅读次数：
199
Given a m x n grid filled with non-negative numbers, find a path from top left to bottom right which minimizes the sum of all numbers along its path.
Note: You can only move either down or right at...
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其他好文 时间：
2014-06-13 20:36:56
阅读次数：
280
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...
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其他好文 时间：
2014-06-13 15:55:47
阅读次数：
273
9 tools to help you with Java Performance
TuningJava Performance Tuning tools to help you improve your Java CodePreviously
I wrote an article about 5 ...
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编程语言 时间：
2014-06-13 15:07:34
阅读次数：
458
Linked List Cycle:Given a linked list, determine if
it has a cycle in it.Follow up:Can you solve it without using extra
space?解题分析：大致思想就是设置两个指针，一个指针每次...
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其他好文 时间：
2014-06-13 14:41:54
阅读次数：
238
