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RSS订阅原创 LeetCode-207. Course Schedule
题目： There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, for example to take course 0 you have to first take course 1, which is expressed as a p...
2020-01-05 17:19:10
147
原创 LeetCode-74. Search a 2D Matrix
题目： Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each r...
2019-12-21 18:09:12
135
原创 Leetcode 3. 无重复字符的最长子串
题目: 给定一个字符串，请你找出其中不含有重复字符的 最长子串 的长度。 示例 1: 输入: “abcabcbb” 输出: 3 解释: 因为无重复字符的最长子串是 “abc”，所以其长度为 3。 示例 2: 输入: “bbbbb” 输出: 1 解释: 因为无重复字符的最长子串是 “b”，所以其长度为 1。 示例 3: 输入: “pwwkew” 输出: 3 解释: 因为无重复字符的最长子串是 “wk...
2019-12-17 19:36:59
135
原创 POJ1426-Find The Multiple
题目： Description Given a positive integer n, write a program to find out a nonzero multiple m of n whose decimal representation contains only the digits 0 and 1. You may assume that n is not greater th...
2019-12-12 16:43:35
127
原创 POJ3278-Catch That Cow
题目： Description Farmer John has been informed of the location of a fugitive cow and wants to catch her immediately. He starts at a point N (0 ≤ N ≤ 100,000) on a number line and the cow is at a point ...
2019-12-12 16:19:16
154
原创 POJ2251-Dungeon Master
题目： Description You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled with rock. It takes one minute to move one u...
2019-12-12 11:38:50
123
原创 POJ1321-棋盘问题
题目： Description 在一个给定形状的棋盘（形状可能是不规则的）上面摆放棋子，棋子没有区别。要求摆放时任意的两个棋子不能放在棋盘中的同一行或者同一列，请编程求解对于给定形状和大小的棋盘，摆放k个棋子的所有可行的摆放方案C。 Input 输入含有多组测试数据。 每组数据的第一行是两个正整数，n k，用一个空格隔开，表示了将在一个n*n的矩阵内描述棋盘，以及摆放棋子的数目。 n <= ...
2019-12-12 10:37:22
327
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