💡전체 코드package ex;import java.util.Arrays;import java.util.Comparator;public class SortEx { public static void main(String[] args) { int[][] arr = {{3,2},{4,1},{3,3},{1,4}}; Arrays.sort(arr, new Comparator() { @Override public int compare(int[] o1, int[] o2) { if(o1[0] == o2[0]) { return o2[1] - o1[1]; } return o2[0]-o1[0..