Finding Max and Min of a number array...

[Guest]

So my array has 5 numbers in it and also the ability to add more to it as the user sees fit. I want to be able to display the max and min number in the array. I made a loop but i am not sure how to make it select the highest or lowest number automatically without me selecting it manually by typing it in.

This is my code for determining this:

// Determine Min and Max Mark
function maxandminMark(){
var markIndex:int;
markIndex=(marks.indexOf(marks));
if (markIndex != -1)
{
  for (var i = markIndex; i < marks.length; i++)
  {
   marks = marks[i+1];
  }
  trace(maxandminMark);
}
}
}

[Ned Murphy · Accepted solution]

Here's a couple of ways...

1) Walk thru the array comparing values

var numArray:Array =  new Array(38,11,45,7,14,9,67,28);
var minNum:Number;
var maxNum:Number;
 
if(numArray.length > 0){
minNum = maxNum = numArray[0];
}
 
for(var i:uint=1; i< numArray.length; i++){
if(numArray < minNum){
  minNum = numArray;
} else if(numArray > maxNum){
  maxNum = numArray;
}
}
 
trace(minNum,maxNum);

2)  Sort the array numerically and pull out the first and last elements

numArray.sort(Array.NUMERIC);

trace(numArray[0],numArray[numArray.length-1]);

[DazFaz]

A simple approach but I hope it helps.

var myArray:Array = [200,899,320,10,569];
var largest:Number = myArray[0];
var smallest:Number = myArray[0];
for (var ii = 0; ii<myArray.length; ii++) {
largest = (largest < myArray[ii])?myArray[ii]:largest;
smallest = (smallest > myArray[ii])?myArray[ii]:smallest;
}

trace ("largest = "+largest);
trace ("smallest = "+smallest);

[Guest]

You can use the Math package. Like so:

var arr:Array = [12,4993,14,2345,190];

var min:Number = Math.min.apply(null,arr);

var max:Number = Math.max.apply(null,arr);

trace(min, max)