干净地把在ActionScript（3.0）两个数组？ [英] Cleanly merge two arrays in ActionScript (3.0)?

问题描述

什么是在ActionScript（具体的ActionScript 3.0）合并两个有序阵列的好方法？由此产生的数组应该进行排序，并没有重复。

What's a nice way to merge two sorted arrays in ActionScript (specifically ActionScript 3.0)? The resulting array should be sorted and without duplicates.

推荐答案

要合并（连击）阵列，使用 .concat（）。

To merge (concatenate) arrays, use .concat().

下面是你如何能串联阵列，并在同一时间删除重复的两个例子。

Below are two examples of how you can concatenate arrays and remove duplicates at the same time.

更方便的方法：（你可以使用 ArrayUtil.createUniqueCopy（）从的的as3corelib ）

More convenient way: (you can use ArrayUtil.createUniqueCopy() from as3corelib)

// from as3corelib:
import com.adobe.utils.ArrayUtil;

var a1:Array = ["a", "b", "c"];
var a2:Array = ["c", "b", "x", "y"];

var c:Array = ArrayUtil.createUniqueCopy(a1.concat(a2)); // result: ["a", "b", "c", "x", "y"]

略快的方式：（可以通过数组循环自己，用<一个href="http://livedocs.adobe.com/flex/3/langref/Array.html#indexOf()"><$c$c>Array.indexOf()检查重复）

Slightly faster way: (you can loop through the arrays yourself and use Array.indexOf() to check for duplicates)

var a1:Array = ["a", "b", "c"];
var a2:Array = ["c", "b", "x", "y"];
var a3:Array = ["a", "x", "x", "y", "z"];

var c:Array = arrConcatUnique(a1, a2, a3); // result: ["a", "b", "c", "x", "y", "z"]

private function arrConcatUnique(...args):Array
{
    var retArr:Array = new Array();
    for each (var arg:* in args)
    {
        if (arg is Array)
        {
            for each (var value:* in arg)
            {
                if (retArr.indexOf(value) == -1)
                    retArr.push(value);
            }
        }
    }
    return retArr;
}

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