DFS class Solution { public static void f(char[][] grid,boolean[][] isVisited,int i,int j) { if(i<0||i>=grid.length||j<0||j>=grid[0].length||grid[i][j]=='0'||isVisited[i][j]) return ; isVisited[i][j]=true; f(grid,isVisited,i+1,j); f(grid,isVisited,i,j+1); f(grid,isVisited,i-1,j); f(grid,...