摘要: Given a string s, return the longest palindromic substring in s. r... 阅读全文
posted @ 2020-11-22 11:40 EvanMeetTheWorld 阅读(31) 评论(0) 推荐(0)
摘要: Given a positive integer n, find the **least number of perfect squ... 阅读全文
posted @ 2020-11-22 10:25 EvanMeetTheWorld 阅读(22) 评论(0) 推荐(0)
摘要: 两种方法: Math.round(n) == n //if true, then 是整数 否则不是 n % 1 == 0 //if ... 阅读全文
posted @ 2020-11-22 09:53 EvanMeetTheWorld 阅读(559) 评论(0) 推荐(0)
摘要: 931 还是min path sum的问题 这种问题首先想到DP. 首先看一下规则: Given a square array of... 阅读全文
posted @ 2020-11-22 09:14 EvanMeetTheWorld 阅读(29) 评论(0) 推荐(0)
摘要: Given a triangle, find the minimum path sum from top to bottom. Ea... 阅读全文
posted @ 2020-11-22 05:06 EvanMeetTheWorld 阅读(30) 评论(0) 推荐(0)
摘要: another classic DP problem. 2D grid, m*n, each time can only move ... 阅读全文
posted @ 2020-11-22 04:34 EvanMeetTheWorld 阅读(20) 评论(0) 推荐(0)
摘要: Another classic DP problems. Given a non-empty string containing o... 阅读全文
posted @ 2020-11-22 04:01 EvanMeetTheWorld 阅读(30) 评论(0) 推荐(0)
摘要: Given an integer array nums, find the sum of the elements between ... 阅读全文
posted @ 2020-11-22 03:10 EvanMeetTheWorld 阅读(24) 评论(0) 推荐(0)
摘要: 198 给定一个数组 找到子序列的和的最大值 但是必须要求这个序列所有的值不能连在一起 很简单 class Solution { ... 阅读全文
posted @ 2020-11-22 02:58 EvanMeetTheWorld 阅读(22) 评论(0) 推荐(0)
摘要: 为什么这样行 class Solution { public int rob(int[] nums) { if(... 阅读全文
posted @ 2020-11-22 02:58 EvanMeetTheWorld 阅读(19) 评论(0) 推荐(0)