Rotating Algorithm Using JS

/**

 * This function will do rotate element of the data.

 * If the step of rotate, n, is equal length of data-1, the data

 * will be reversed.

 * 

 * @author  : irfanudin ridho

 * @email   : irfan.ub@gmail.com

 * @date    : December 29, 2010

 * @version : 1.0

 */

/**

 * @param data array of data

 * @param n number step to rotate

 * @return datas new rotated data in n step

 */

function Rotate(data,n){
    var datas = new Array();
    for(i=n;i<data.length;i++){
       datas[i] = data[i-n];
    }
    for(i=0;i<n;i++){
        datas[i]= data[data.length-1-i];
    }
    return datas;
}