java，c++&c，python，js，php的数组定义与遍历

Java

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner cin = new Scanner(System.in);
        int[] p = {3, 6, 9};
        for(int i=0;i<p.length;i++){
            System.out.print(p[i]+“ ”);
        }
    }
}

输出结果：3 6 9

C++&c

#include<cstdio>
const int maxn = 3;
int p[maxn] = { 3,6,9 };
int main() {
    for (int i = 0; i < 3; i++) {
        printf("%d ", p[i]);
    }
    return 0;
}

输出结果：3 6 9

Python

a = {1,3,4,5}
for i in a:
    print(i,end=' ')

输出结果：3 6 9

JS

var p=[3,6,9];

for(var i=0,len=p.length;i<len;i++){
    //do something
}

PHP

<?php
$arr = array(3,6,9);
foreach($arr as $i){
    echo $i,' ';
}

输出结果：3 6 9