haoweizh

摘要： Problem: Given a non-empty string s and a dictionary wordDict containing a list of non-empty words, add spaces in s to construct a sentence where each 阅读全文

摘要： Problem: You are given K eggs, and you have access to a building with N floors from 1 to N. Each egg is identical in function, and if an egg breaks, y 阅读全文

摘要： Problem: A 2d grid map of m rows and n columns is initially filled with water. We may perform an addLand operation which turns the water at position ( 阅读全文

摘要： 基本思想： Union Find问题主要用于解决分块问题，对于Union Find问题一般也可以用DFS或BFS解决，但用Union Find更方便一些。该算法一般包含两个函数，Union和Find函数，Find函数就是依据图或树的拓扑关系找到其根节点，Union则是将两个子图或子树合并成一个树。 阅读全文

摘要： Problem: There is a new alien language which uses the latin alphabet. However, the order among letters are unknown to you. You receive a list of non-e 阅读全文