【题目】
Follow up for "Remove Duplicates":
What if duplicates are allowed at most twice?
For example,
Given sorted array A = [1,1,1,2,2,3],
Your function should return length = 5, and A is now [1,1,2,2,3].
【题意】
给定一个有序数组，给数组去重，和Remove Duplicates from...
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其他好文 时间：
2014-06-03 05:36:24
阅读次数：
219
【题目】
Given a 2D board and a word, find if the word exists in the grid.
The word can be constructed from letters of sequentially adjacent cell, where "adjacent" cells are those horizontally or vertically neighboring. The same letter cell may not be use...
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其他好文 时间：
2014-06-03 01:07:58
阅读次数：
329
【题目】
Given a linked list and a value x, partition it such that all nodes less than x come before nodes greater than or equal to x.
You should preserve the original relative order of the nodes in each of the two partitions.
For example,
Given 1->4->3-...
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其他好文 时间：
2014-06-03 00:02:29
阅读次数：
270
【题目】
Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area.
【题意】
给定一个由0和1填充的二维矩阵，找一个全是1的最大矩形
【思路】
扫描二维矩阵，凡是扫到值为1的块时候，以当前块为矩形的左上角区块拓展，找最大矩阵。
先找出以每个“1”区块为左上角区块的最大矩形，然后求出最大全局的最大矩...
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其他好文 时间：
2014-06-02 23:08:07
阅读次数：
289
【题目】
Given n non-negative integers representing the histogram's bar height where the width of each bar is 1, find the area of largest rectangle in the histogram.
Above is a histogram where width of each bar is 1, given height = [2,1,5,6,2,3].
The...
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其他好文 时间：
2014-06-01 10:46:29
阅读次数：
242
【题目】
Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.
Below is one possible representation of s1 = "great":
great
/ gr eat
/ \ / g r e at
/ ...
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其他好文 时间：
2014-06-01 09:41:05
阅读次数：
196
【题目】
Given two sorted integer arrays A and B, merge B into A as one sorted array.
Note:
You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are...
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其他好文 时间：
2014-06-01 09:21:16
阅读次数：
292
【题目】
The gray code is a binary numeral system where two successive values differ in only one bit.
Given a non-negative integer n representing the total number of bits in the code, print the sequence of gray code. A gray code sequence must begin with 0.
...
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其他好文 时间：
2014-06-01 09:16:29
阅读次数：
242
【题目】
A message containing letters from A-Z is being encoded to numbers using the following mapping:
'A' -> 1
'B' -> 2
...
'Z' -> 26
Given an encoded message containing digits, determine the total number of ways to decode it.
For example,
Given encoded ...
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其他好文 时间：
2014-06-01 08:59:37
阅读次数：
258
【题目】
Given a collection of integers that might contain duplicates, S, return all possible subsets.
Note:
Elements in a subset must be in non-descending order.
The solution set must not contain duplicate subsets.
For example,
If S = [1,2,2], a solution ...
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其他好文 时间：
2014-06-01 08:51:06
阅读次数：
292
