Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A region is captured by flipping all 'O's into 'X's in that surrounded region. For example, X X X X X O O X X X O X X O X X After running your function, the board should…
题意:大致就是要求画出这个有规律的Fractal图形了= = 例如 1 对应 X 2 对应 X X X X X 这个题是个理解分治法很典型的例子(详情请参见Code) 分治法:不断缩小规模,以致把整个大问题分解为若干个可以直接处理的小问题,一般通过递归调用实现,可以用极简代码完成高复杂的工作,但空间与时间占用也相对较大. //分治法画图 //Memory:880K Time:16 Ms #include<iostream> #include<cstring> #inc…
Problem J. Let Sudoku Rotate Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 530 Accepted Submission(s): 146 Problem Description Sudoku is a logic-based, combinatorial number-placement puzz…