Ryan’s leetcode Blog

Given a string  s  and a dictionary of words  dict , add spaces in  s  to construct a sentence where each word is a valid dictionary word. ...

Given an array of words and a length  L , format the text such that each line has exactly  L  characters and is fully (left and right) just...

Given a 2D board containing  'X'  and  'O' , capture all regions surrounded by  'X' . A region is captured by fli...

Given a 2D board and a word, find if the word exists in the grid. The word can be constructed from letters of sequentially adjacent cell,...

Given a  m  x  n  matrix, if an element is 0, set its entire row and column to 0. Do it in place. "这是一个矩阵操作的题目，目标很明确，就是如果矩阵如果有元素为0，就把...

Given an integer  n , generate a square matrix filled with elements from 1 to  n 2  in spiral order. For example, Given  n  =  3 , You ...

Given a matrix of  m  x  n  elements ( m  rows,  n  columns), return all elements of the matrix in spiral order. For example, Given the ...