public class Solution { public boolean Find(int target, int [][] array) { int row = array.length; int col = array[0].length; int i=row-1, j=0; while(i>=0 && i<row && j>=0 && j<col){ if(array[i][j] == target){ return true; }else if(target > array[i][j]){ j += 1; }else{ i -= 1; } } return false; } }