一些思路

import java.util.Scanner;
public class solution {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num = in.nextInt();
        for(int k = 0;k<num;k++) {
            int m = in.nextInt();
            int n = in.nextInt();
            int[][] a = new int[m][n];//把a看成一个引用
            for (int i = 0; i < m; i++) {
                for (int j = 0; j < n; j++) {
                    a[i][j] = in.nextInt();
                }
            }
            int count = in.nextInt();
            for (int i = 0; i < count; i++) {
                int op = in.nextInt();
                switch (op) {
                    case 1:
                        m = a.length;
                        n = a[0].length;
                        int[][] b = new int[n][m];
                        b = change1(a);
                        a = b;//其实a就是一个引用地址，可以改变
                        break;
                    case 2:
                        m = a.length;
                        n = a[0].length;
                        int[][] c = new int[n][m];
                        c = change2(a);
                        a = c;
                        break;
                    case 3:
                        change3(a);
                        break;
                    case 4:
                        change4(a);
                        break;
                    case 5:
                        int x0 = in.nextInt();
                        int y0 = in.nextInt();
                        int x1 = in.nextInt();
                        int y1 = in.nextInt();
                        int value = in.nextInt();
                        change5(a, x0, y0, x1, y1, value);
                        break;
                }
            }
            m = a.length;
            n = a[0].length;

            for (int i = 0; i < m; i++) {
                for (int j = 0; j < n; j++) {
                    System.out.print(a[i][j] + " ");
                }
                System.out.println();
            }
        }
    }

    public static int[][] change1(int[][] a){
        int m = a.length;
        int n = a[0].length;
        int[][] b = new int[n][m];
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                b[i][j] = a[m-1-j][i];
            }
        }
        return b;
    }
    public static int[][] change2(int[][] a){
        int m = a.length;
        int n = a[0].length;
        int[][] b = new int[n][m];
        for(int i=0;i<n;i++){
            for(int j=0;j<m;j++){
                b[i][j] = a[j][n-1-i];
            }
        }
        return b;
    }
    public static void change3(int[][] a){
        int m = a.length;
        int n = a[0].length;
        int[][] b = new int[m][n];
        for(int i=0;i<m;i++){
            for(int j=0;j<n;j++){
                b[i][j] = a[m-i-1][j];
            }
        }
        for(int i=0;i<m;i++){
            for(int j=0;j<n;j++){
                a[i][j] = b[i][j];
            }
        }
    }
    public static void change4(int[][] a){
        int m = a.length;
        int n = a[0].length;
        int[][] b = new int[m][n];
        for(int i=0;i<m;i++){
            for(int j=0;j<n;j++){
                b[i][j] = a[i][n-1-j];
            }
        }
        for(int i=0;i<m;i++){
            for(int j=0;j<n;j++){
                a[i][j] = b[i][j];
            }
        }
    }
    public static void change5(int[][] a,int x0,int y0,int x1,int y1,int value){
        for(int i=x0;i<=x1;i++){
            for(int j=y0;j<=y1;j++){
                a[i][j] = a[i][j]+value;
            }
        }
    }
}