在阵列AS3寻找共同的价值观 [英] AS3 Finding common values in Arrays

问题描述

我挣扎的东西，应该不会太困难，但我不出来我有一些阵列具有不同的价值观，我想找到的共同价值观所有的数组都有，看下面的例子

I'm struggling with something that shouldn't be too difficult but I can't figure it out I have a number of Arrays with different values and I want to find the common values all of the Arrays have, see example below:

        var arrayOne:Array      = ["1","2","3"];
        var arrayTwo:Array      = ["1","2","7"];
        var arrayThree:Array    = ["1","2","9","12"];

        _resultArray = ["1","2"];

任何帮助是AP preciated。

Any help is appreciated.

推荐答案

您可以这样做：

///Returns common values between to arrays
function getCommonValues(array1:Array, array2:Array):Array
{
    var len1:int = array1.length;
    var len2:int = array2.length;
    var toReturn:Array = new Array();

    for(var i:int = 0; i < len1; i++){
        for(var n:int = 0; n < len2; n++){
            if(array1[i] == array2[n]){
                toReturn.push(array1[i]);
            }
        }
    }
    return toReturn;
}

然后做这样的事情：

Then do something like:

var arrayOneAndTwo:Array = getCommonValues(arrayOne,arrayTwo);
var _resultArray:Array = getCommonValues(arrayOneAndTwo,arrayThree);

另外，你可以修改的功能包括在比较三个阵列，这将是更有效的。

Optionally you can modify the function to include all three arrays in the comparison, which would be more efficient.

修改

如果你想处理一个未知量的数组，你可以添加：

If you want to process an unknown amount of arrays you can add:

///Returns common values between X number of sub arrays
function getCommonValuesFromSubArrays(papaArray:Array):Array
{
    if(papaArray.length < 2){ return papaArray; }

    var toReturn:Array = papaArray[0];

    for(var a:int = 1; a < papaArray.length; a++){
        toReturn = getCommonValues(toReturn, papaArray[a]);
    }

    return toReturn;
}

然后是这样的：

Then something like:

var arr1:Array = ["one","two","three","four","five"];
var arr2:Array = ["one","two","five","six"];
var arr3:Array = ["one","two","three","four","five"];
var arr4:Array = ["one","two","three","four","five"];

var bigOlArray:Array = [arr1,arr2,arr3,arr4];

var _results:Array = getCommonValuesFromSubArrays(bigOlArray);

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