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搜索关键字:双指针    ( 649个结果
LeetCode --- 15. 3Sum
题目链接:3Sum Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: *Elements in a triplet (a...
分类:其他好文   时间:2015-01-29 21:11:51    阅读次数:180
Leetcode#3 Longest Substring Without Repeating Characters
原题地址双指针法。右指针不断向右试探,当遇到重复字符时停下来,此时左指针开始向右收缩,直到去掉那个重复字符。代码: 1 int lengthOfLongestSubstring(string s) { 2 map record; 3 int maxLen = 0; 4...
分类:其他好文   时间:2015-01-29 19:20:25    阅读次数:140
LeetCode --- 11. Container With Most Water
题目链接:Container With Most Water Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is ...
分类:其他好文   时间:2015-01-29 12:48:22    阅读次数:226
C语言中的二级指针(双指针)
原创作品,转载请标明出处http://blog.csdn.net/yming0221/article/details/7220688C语言更多查看C语言使用注意事项(一)C语言使用注意事项(二)C语言使用注意事项(三)二级指针又叫双指针。C语言中不存在引用,所以当你试图改变一个指针的值的时候必须使用...
分类:编程语言   时间:2015-01-29 11:51:22    阅读次数:156
LeetCode --- 3. Longest Substring Without Repeating Characters
题目链接:Longest Substring Without Repeating Characters Given a string, find the length of the longest substring without repeating characters. For example, the longest substring without repeating letters...
分类:其他好文   时间:2015-01-27 23:33:44    阅读次数:176
[LeetCode]Minimum Window Substring
Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n). For example, S = "ADOBECODEBANC" T = "ABC" Minimum window is "BAN...
分类:Windows程序   时间:2015-01-20 12:03:35    阅读次数:219
LeetCode--Intersection of Two Linked Lists
Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: A: a1 → a2 ↘ ...
分类:其他好文   时间:2015-01-16 11:18:52    阅读次数:110
LeetCode--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? /** * Definition for singly-linked list. * struct ListNode { * int val; * ...
分类:其他好文   时间:2015-01-15 11:01:23    阅读次数:186
LeetCode--Linked List Cycle II
Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Follow up: Can you solve it without using extra space? /** * Definition for singly-linked list. *...
分类:其他好文   时间:2015-01-15 11:01:22    阅读次数:236
leetcode:Remove Nth Node From End of List
一、     题目 给定一个单链表,删除倒数第n个节点,返回删除了的链表。 例如: 已知: 1->2->3->4->5,  n = 2. 处理后:1->2->3->5.       试着遍历一次完成。 二、     分析 看到这道题我第一感觉就是双指针,因为要删除倒数第n个数,所以两个指针的间距也就是这个n,当右边的指针到达末尾处时,那么左指针的下一个指针就是要删除的节点。其实会有下面...
分类:其他好文   时间:2015-01-14 09:51:12    阅读次数:155
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