package com.riafan.utils {

	/**
	 * Class that contains static utility methods for manipulating and working
	 * with Arrays
	 * @author Flying
	 * @version 1
	 * @tiptext
	 */
	public class ArrayUtil {

		/**
		 * Switch the rows and columns of a 2d array array
		 * @param arr The 2d array whose dimensions will be switched
		 * @return A new array which contains items after switch 
		 */
		public static function switchDimensions(arr : Array) : Array {
			var newArr : Array = new Array();
			var rowMax : uint = arr.length;
			var colMax : uint;
			try {
				if(arr[0] is Array) {
					colMax = arr[0].length;
				}else {
				    throw new TypeError("muse be a 2d array");
				}
			}
			catch (error : TypeError) {
				trace(error.message);
			}
			for (var col : uint = 0; col < colMax; col++) {
				var tmpArr : Array = new Array();
				for (var row : uint = 0; row < rowMax; row++) {
					tmpArr[row] = (arr[row][col]);
				}
				newArr[col] = tmpArr;
			}
			return newArr;
		}
	}
}