*LeetCode-Smallest Rectangle Enclosing Black Pixels
常规做法dfsbfsO(mn)bfs需要新建一个class存坐标dfs不用存更简便一点记得每次访问过1后要给他设置成0publicclassSolution{
intminX=Integer.MAX_VALUE,maxX=0,minY=Integer.MAX_VALUE,maxY=0;
publicintminArea(char[][]image,intx,inty){
if(image==nul