摘要:
There is an m x n matrix that is initialized to all 0's. There is also a 2D array indices where each indices[i] = [ri, ci] represents a 0-indexed loca 阅读全文
摘要:
Given an n x n binary matrix image, flip the image horizontally, then invert it, and return the resulting image. To flip an image horizontally means t 阅读全文
摘要:
You are given coordinates, a string that represents the coordinates of a square of the chessboard. Below is a chessboard for your reference. Return tr 阅读全文
摘要:
A sentence is a list of words that are separated by a single space with no leading or trailing spaces. Each of the words consists of only uppercase an 阅读全文