function to get all array member permutations.

arrayPermutationFunct

public static function permutate(elements:Array):Array {
		var retVal:Array = new Array();
		var elementCount:int = elements.length;
		var doSearch:Boolean = true;
		var indexVector:Vector.<int> = new Vector.<int>(elementCount);
		var headIndex:int = 0;

		while (doSearch) {
			// set up initial data
			var tempCards:Vector.<CardVO> = new <CardVO>[];
			for (var j:int = 0; j < elementCount; j++) {
				tempCards.push(elements[j]);
			}
			var currentCards:Array = [];
			// form new sequence.
			for (var i:int = 0; i < elementCount; i++) {
				currentCards.push(tempCards.splice(indexVector[i], 1)[0]);
			}
			retVal.push(currentCards);
			// advance index.
			indexVector[headIndex]++;
			if (indexVector[headIndex] >= elementCount - headIndex) {
				headIndex++;
				var indexDepth:int = 1;
				while (headIndex && doSearch) {
					if (headIndex < elementCount) {
						indexVector[headIndex]++;
						if (indexVector[headIndex] >= elementCount - indexDepth) {
							headIndex++
							indexDepth++;
						} else {
							while (headIndex > 0) {
								headIndex--;
								indexVector[headIndex] = 0;
							}
						}
					} else {
						doSearch = false;
					}
				}
			}
		}
		return retVal;
	}