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leetcode——Two Sum 两数之和(AC)
Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, whe...
分类:其他好文   时间:2014-06-09 23:14:45    阅读次数:264
[leetcode]Combination Sum @ Python
原题地址:https://oj.leetcode.com/problems/combination-sum/题意:Given a set of candidate numbers (C) and a target number (T), find all unique combinations in...
分类:编程语言   时间:2014-06-09 17:50:09    阅读次数:333
[leetcode]Combination Sum II @ Python
原题地址:https://oj.leetcode.com/problems/combination-sum-ii/题意:Given a collection of candidate numbers (C) and a target number (T), find all unique combi...
分类:编程语言   时间:2014-06-09 17:41:58    阅读次数:320
LEETCODE--Remove Duplicates from Sorted List II
Given a sorted linked list, delete all nodes that have duplicate numbers, leaving onlydistinctnumbers from the original list.For example,Given1->2->3-...
分类:其他好文   时间:2014-06-08 21:56:41    阅读次数:297
LeetCode: Triangle [120]
【题目】 Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adjacent numbers on the row below. For example, given the following triangle [ [2], [3,4], [6,5,7], [4,1,8,3] ] The minimum path sum from top to...
分类:其他好文   时间:2014-06-08 17:52:45    阅读次数:235
leetcode——Add Two Numbers 两个链表表示的正整数对其求和(AC)
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a link...
分类:其他好文   时间:2014-06-08 15:30:28    阅读次数:227
Decode Ways
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 ...
分类:其他好文   时间:2014-06-08 15:30:08    阅读次数:182
字典树 Trie (HDU 1671)
Problem Description Given a list of phone numbers, determine if it is consistent in the sense that no number is the prefix of another. Let’s say the phone catalogue listed these numbers: 1. Emergenc...
分类:其他好文   时间:2014-06-08 10:31:22    阅读次数:234
[LeetCode] Two Sum [17]
题目 :Input: numbers={2, 7, 11, 15}, target=9 Output: index1=1, index2=2 解题思路: 给出一个数组合一个数,如果两个数的和等于所给的数,求出该两个数所在数组中的位置。 这个题也挺常见的,就是两个指针,从前后两个方向扫描。但是本题有以下几个需要的点: 1. 所给数组不是有序的; 2. 返回的下标是从1开始的,并且是原来无序数组中的下标; 3. 输入数组中可能含有重复的元素。 好了,把以上三点想到的话,做这个题应该不会有啥问题。 具体方法:把原...
分类:其他好文   时间:2014-06-08 02:14:06    阅读次数:250
LeetCode——Two Sum
Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, whe...
分类:其他好文   时间:2014-06-08 02:12:04    阅读次数:216
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