Divide an array object in equals parts

DivideArray.as

/**
 Divide array in equal parts
 @param array:Array reference array
 @param parts:uint Number of Parts to divide
 @returns Divided Array thus [[1,2,3],[4,5,6],[7,8,9,10]]
 */
public static function divideArray (array:Array, parts:uint):Array 
{
	if (parts <= 1)
		throw new ArgumentError("Parts arguments must be integer greater than 1");
	
	var groupSize:uint = Math.round(array.length / parts);
	var result:Array = [];
	
	for (var i:uint = 0; i < parts; i++) {
		var group:Array;
		
		if (i == parts-1)
			group = array.slice(groupSize*i, array.length);
		else
			group = array.slice(groupSize*i, (groupSize * (i+1)));
		
		result.push(group);
	}
	
	return result;
}