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4、數組的輸出：
(1) @array = (1, 2, 3);
print (@array, "\n");
結果為：
123
(2) @array = (1, 2, 3);
print ("@array\n");
結果為：
1 2 3
5、列表/數組的長度
當數組變量出現在預期簡單變量出現的地方，則PERL解釋器取其長度。
@array = (1, 2, 3);
$scalar = @array; # $scalar = 3,即@array的長度
($scalar) = @array; # $scalar = 1,即@array第一個元素的值
注：以數組的長度為循環次數可如下編程：
$count = 1;
while ($count <= @array) {
print ("element $count: $array[$count-1]\n");
$count++;
}
6、子數組
@array = (1, 2, 3, 4, 5);
@subarray = @array[0,1]; # @subarray = (1, 2)
@subarray2 = @array[1..3]; # @subarray2 = (2,3,4)
@array[0,1] = ("string", 46); # @array =("string",46,3,4,5) now
@array[0..3] = (11, 22, 33, 44); # @array = (11,22,33,44,5) now
@array[1,2,3] = @array[3,2,4]; # @array = (11,44,33,5,5) now
@array[0..2] = @array[3,4]; # @array = (5,5,"",5,5) now
可以用子數組形式來交換元素：
@array[1,2] = @array[2,1];
7、有關數組的庫函數
(1)sort--按字符順序排序
@array = ("this", "is", "a","test");
@array2 = sort(@array); # @array2 = ("a","is", "test", "this")
@array = (70, 100, 8);
@array = sort(@array); # @array = (100, 70, 8) now
( 2)reverse--反轉數組
@array2 = reverse(@array);
@array2 = reverse sort (@array);
(3)chop--數組去尾
chop的意義是去掉STDIN（鍵盤）輸入字符串時最后一個字符--換行符。而如果它作用到數組上，則將數組中每一個元素都做如此處理。
@list = ("rabbit", "12345","quartz");
chop (@list); # @list = ("rabbi", "1234","quart") now
( 4)join/split--連接/拆分
join的第一個參數是連接所用的中間字符，其余則為待連接的字符數組。
$string = join(" ", "this", "is","a", "string"); # 結果為"this is a string"
@list = ("words","and");
$string = join("::", @list, "colons"); #結果為"words::and::colons"
@array = split(/::/,$string); # @array = ("words","and", "colons") now
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