java学习之旅61--数组_多维数组_练习_矩阵运算

1. 打印矩阵和矩阵加法

   • package cn.itcast.java.test;public class TestMatrix {/** * 矩阵加法 * @param a * @param b * @return */public static int[][] add(int[][] a,int[][] b){int len = a.length;int[][] c = new int[len][len];for(int i=0;i<len;i++){for(int j=0;j<len;j++){c[i][j] = a[i][j]+b[i][j];}}return c;}public static void printMatrix(int[][] arr){int len = arr.length;for(int i=0;i<len;i++){for(int j=0;j<len;j++){System.out.print(arr[i][j]+"\t");}System.out.println();}}public static void main(String[] args) {int[][] a = {{1,2},{3,4}};int[][] b = {{5,6},{7,8}};int[][] c = add(a, b);printMatrix(c);}}