Go language array and traversal

package main

import "fmt"

func main() {
	// 二维数组
	var arr [4][6]int
	arr[1][2] = 1
	arr[2][1] = 2
	arr[2][3] = 3
	fmt.Println(arr)

	// 遍历二维数组 for
	for i := 0; i < 4; i++ {
		for j := 0; j < 6; j++ {
			fmt.Print(arr[i][j], " ")
		}
		fmt.Println()
	}
	// 遍历二维数组 for-range
	for _, v := range arr {
		for _, v2 := range v {
			fmt.Print(v2, " ")
		}
		fmt.Println()
	}
}