二維數組遍歷的方式(for普通循環遍歷、foreach循環遍歷、toString方式遍歷)

package com.Summer_0421.cn; import java.lang.reflect.Array; import java.util.Arrays; /** * @author Summer * 二維數組遍歷的方式for普通循環和foreach循環、toString遍歷 */
public class Test03 { public static void main(String[] args) { show1(); show2(); show3(); } private static void show3() { int[][] its = new int[][]{{1},{1,2},{1,2,3},{1,2,3,4}}; for (int i = 0; i < its.length; i++) { System.out.println(Arrays.toString(its[i])); } } private static void show2() { int[][] its = new int[][]{{1},{1,2},{1,2,3},{1,2,3,4}}; for (int[] is : its) { for (int i : is) { System.out.print(i+" "); } System.out.println(); } } private static void show1() { int[][] its = new int[][]{{1},{1,2},{1,2,3},{1,2,3,4}}; for (int i = 0; i < its.length; i++) { for (int j = 0; j < its[i].length; j++) { System.out.print(its[i][j]+" "); } System.out.println(); } } }