获取数组长度

Contents [hide]

输出结果

1
3

程式码


JavaScript

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let array = [1, 2, 3];
console.log(array.length);

Perl

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my @array = (1, 2, 3);
my $len = $#array+1;
print $len."\n";

PHP

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<?php
$array = [1, 2, 3];
print count($array)."\n";

Python

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array = [1, 2, 3]
print(str(len(array)))

Ruby

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array = [1, 2, 3]
print(array.length.to_s + "\n")