题目链接:Trapping Rain Water
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.
For example,
Given ...
分类:
移动开发 时间:
2015-02-09 00:48:49
阅读次数:
207
题目链接:Substring with Concatenation
of All Words
You are given a string, S, and a list of words, L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatena...
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其他好文 时间:
2015-02-02 23:09:55
阅读次数:
253
题解:O(n*n)
首先我们先外圈枚举一个最小权值一
然后内圈再枚举一个最小权值二
然后每次外圈枚举完了就重置一下双指针,
每次内圈枚举的时候右指针右移把总条件符合的加进去,其中第二个权值符合枚举条件的计数。
然后左指针右移把第一个权值不符合的清出去,其中第而个权值符合枚举条件的计数。
因为单调性问题,所以不会有l>r 的情况(第一权值不符合的在右指针右移时,第...
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其他好文 时间:
2015-02-02 14:15:27
阅读次数:
159
题目链接:Remove Element
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 changed. It doesn't matter what you leave beyond t...
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其他好文 时间:
2015-02-02 12:34:19
阅读次数:
158
题目链接:Remove Duplicates from Sorted
Array
Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.
Do not allocate extra space for ano...
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其他好文 时间:
2015-02-02 12:34:17
阅读次数:
151
题目链接:Implement strStr()
Implement strStr().
Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
Update (2014-11-02):
The signature of the func...
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其他好文 时间:
2015-02-02 12:31:43
阅读次数:
135
原题地址基本模拟题,双指针法代码: 1 int removeElement(int A[], int n, int elem) { 2 int i = 0; 3 int j = 0; 4 5 while (i < n) { 6 ...
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其他好文 时间:
2015-02-02 12:00:21
阅读次数:
128
题目链接:Remove Nth Node From End of List
Given a linked list, remove the nth node from the end of list and return its head.
For example,
Given linked list: 1->2->3->4->5, and n = 2.
After removing ...
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其他好文 时间:
2015-01-30 22:43:16
阅读次数:
179
题目链接:4Sum
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 which gives the sum of target.
Note:
...
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其他好文 时间:
2015-01-30 22:42:54
阅读次数:
251
题目链接:3Sum Closest
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input...
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其他好文 时间:
2015-01-30 22:42:30
阅读次数:
252