AS2提取排列前5位

Question

大家好！ 任何人都知道如何从数组中提取前5个数字（最高）？ 我有一个名字，姓氏和分数的XML，并且想要提取前5名来创建图表。 至于现在，我得到的所有信息以这样的方式

num = xmlData.childNodes.length; 
    for (var i = 0; i <= num - 1; i++) 
    { 
     names[i] = this.childNodes[i].childNodes[6].firstChild.nodeValue; 
     surnames[i] = this.childNodes[i].childNodes[5].firstChild.nodeValue; 
     points[i] = this.childNodes[i].childNodes[0].firstChild.nodeValue; 
     pointsint[i] = parseInt(speeds[i]); 
     trace(i + "." + pointsint[i] + " (" + names[i] + " " + surnames[i] + ")"); 
    } 

感谢您的帮助！

Answer 1

将数据组织为通用对象条目和Array.sortOn（...）（http://help.adobe.com/en_US/as2/reference/flashlite/WS5b3ccc516d4fbf351e63e3d118ccf9c47f-7ea5.html）。我没有测试，但我认为这个想法很明确：

var num = xmlData.childNodes.length; 
var entries = []; 

for (var i = 0; i <= num - 1; i++) 
{ 
    var anEntry = {}; 
    var aNode = xmlData.childNodes[i]; 

    anEntry['name'] = aNode.childNodes[6].firstChild.nodeValue; 
    anEntry['surname'] = aNode.childNodes[5].firstChild.nodeValue; 

    var aSpeed = aNode.childNodes[0].firstChild.nodeValue; 
    anEntry['speed'] = parseInt(aSpeed); 

    entries.push(anEntry); 

    trace(i + "." + anEntry['speed'] + " (" + anEntry['name'] + " " + anEntry['surname'] + ")"); 
} 

entries.sortOn("speed", Array.DESCENDING | Array.NUMERIC); 
// Now first five elements of entries Array is what you want.