摘要:You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees (clockwise). You have to rotate the image in-place, which means 阅读全文
posted @ 2020-09-24 05:22 Review->Improve 阅读(3) 评论(0) 推荐(0) 编辑
摘要:Given a rows x cols binary matrix filled with 0's and 1's, find the largest rectangle containing only 1's and return its area. Example 1: Input: matri 阅读全文
posted @ 2020-09-24 04:15 Review->Improve 阅读(2) 评论(0) 推荐(0) 编辑
摘要:There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house with a certain color is different. Yo 阅读全文
posted @ 2020-09-23 13:03 Review->Improve 阅读(4) 评论(0) 推荐(0) 编辑
摘要:There are a row of n houses, each house can be painted with one of the three colors: red, blue or green. The cost of painting each house with a certai 阅读全文
posted @ 2020-09-23 13:02 Review->Improve 阅读(5) 评论(0) 推荐(0) 编辑
摘要:Given two strings s and t, you want to transform string s into string t using the following operation any number of times: Choose a non-empty substrin 阅读全文
posted @ 2020-09-15 22:32 Review->Improve 阅读(29) 评论(0) 推荐(0) 编辑
摘要:Given an integer array arr, remove a subarray (can be empty) from arr such that the remaining elements in arr are non-decreasing. A subarray is a cont 阅读全文
posted @ 2020-09-08 05:41 Review->Improve 阅读(59) 评论(0) 推荐(0) 编辑
摘要:I have run into 2 different problems that can be solved using binary lifting. Then there is second thread's tree basics youtube video that talks about 阅读全文
posted @ 2020-08-25 11:53 Review->Improve 阅读(25) 评论(0) 推荐(0) 编辑
摘要:Given an array arr that represents a permutation of numbers from 1 to n. You have a binary string of size n that initially has all its bits set to zer 阅读全文
posted @ 2020-08-25 01:47 Review->Improve 阅读(74) 评论(0) 推荐(0) 编辑
摘要:Given an integer n and an integer array rounds. We have a circular track which consists of n sectors labeled from 1 to n. A marathon will be held on t 阅读全文
posted @ 2020-08-24 23:47 Review->Improve 阅读(84) 评论(0) 推荐(0) 编辑
摘要:On a broken calculator that has a number showing on its display, we can perform two operations: Double: Multiply the number on the display by 2, or; D 阅读全文
posted @ 2020-08-23 04:57 Review->Improve 阅读(23) 评论(0) 推荐(0) 编辑