题解 | #二维数组中的查找#

package org.example.test;

public class TwoDimArrayFindTest {
    public static void main(String[] args) {
        int[][] test = {{1, 2, 8, 9}, {2, 4, 9, 12}, {4, 7, 10, 13}, {6, 8, 11, 15}};
        System.out.println(find(10, test));
    }


    //从右边左，从上到下
    public static boolean find(int target, int[][] array) {
        int j = 0;
        for (int[] ary : array) {
            for (int value : ary) {
                if (ary[j] > target) {
                    j--;
                    if (j < 0) {
                        j=0;
                        break;
                    }
                } else if (ary[j] < target) {
                    j++;
                    if (j >= ary.length) {
                        j--;
                        break;
                    }
                } else {
                    return true;
                }
            }
        }
        return false;
    }
}