一、题目内容

二、题解

解法1：

思路

代码

public class Solution {
    public boolean Find(int target, int [][] array) {
        if (array == null || array.length == 0 || array[0].length == 0) {
            return false;
        }
        int rows = array.length, columns = array[0].length;
        int row = 0, column = columns - 1;
        while(row<rows && column>=0){
            int num = array[row][column];
            if(num == target){
                return true;
            }else if(num>target){
                column--;
            }else{
                row++;
            }
        }
        return false;
    }
}