835. 图像重叠 给出两个图像 A 和 B ,A 和 B 为大小相同的二维正方形矩阵.(并且为二进制矩阵,只包含0和1). 我们转换其中一个图像,向左,右,上,或下滑动任何数量的单位,并把它放在另一个图像的上面.之后,该转换的重叠是指两个图像都具有 1 的位置的数目. (请注意,转换不包括向任何方向旋转.) 最大可能的重叠是什么? 示例 1: 输入:A = [[1,1,0], [0,1,0], [0,1,0]] B = [[0,0,0], [0,1,1], [0,0,1]] 输出:3 解释:…

836. 矩形重叠 矩形以列表 [x1, y1, x2, y2] 的形式表示,其中 (x1, y1) 为左下角的坐标,(x2, y2) 是右上角的坐标. 如果相交的面积为正,则称两矩形重叠.需要明确的是,只在角或边接触的两个矩形不构成重叠. 给出两个矩形,判断它们是否重叠并返回结果. 示例 1: 输入:rec1 = [0,0,2,2], rec2 = [1,1,3,3] 输出:true 示例 2: 输入:rec1 = [0,0,1,1], rec2 = [1,0,2,1] 输出:false 提示…

733. 图像渲染 有一幅以二维整数数组表示的图画,每一个整数表示该图画的像素值大小,数值在 0 到 65535 之间. 给你一个坐标 (sr, sc) 表示图像渲染开始的像素值(行 ,列)和一个新的颜色值 newColor,让你重新上色这幅图像. 为了完成上色工作,从初始坐标开始,记录初始坐标的上下左右四个方向上像素值与初始坐标相同的相连像素点,接着再记录这四个方向上符合条件的像素点与他们对应四个方向上像素值与初始坐标相同的相连像素点,--,重复该过程.将所有有记录的像素点的颜色值改为新的颜色…

435. 无重叠区间 给定一个区间的集合,找到需要移除区间的最小数量,使剩余区间互不重叠. 注意: 可以认为区间的终点总是大于它的起点. 区间 [1,2] 和 [2,3] 的边界相互"接触",但没有相互重叠. 示例 1: 输入: [ [1,2], [2,3], [3,4], [1,3] ] 输出: 1 解释: 移除 [1,3] 后,剩下的区间没有重叠. 示例 2: 输入: [ [1,2], [1,2], [1,2] ] 输出: 2 解释: 你需要移除两个 [1,2] 来使剩下的区间没有…

The set [1,2,3,…,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, We get the following sequence (ie, for n = 3): "123" "132" "213" "231" "312" "…

Implement wildcard pattern matching with support for '?' and '*'. '?' Matches any single character. '*' Matches any sequence of characters (including the empty sequence). The matching should cover the entire input string (not partial). The function p…

Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Ensure that numbers within the set are sorted in ascending order. Example 1…

Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can find by performing this transformation. For example: Given "aacecaaa", return "aaacecaaa&qu…

Given a 2D board and a list of words from the dictionary, find all words in the board. Each word must be constructed from letters of sequentially adjacent cell, where "adjacent" cells are those horizontally or vertically neighboring. The same le…

Design a data structure that supports the following two operations: void addWord(word)bool search(word) search(word) can search a literal word or a regular expression string containing only letters a-z or .. A . means it can represent any one letter.…