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;

    }
}