gistfile1.txt

(function(){

	/**
	 * Create the perms stack
	 */
	var stack = [];

	/**
	 * Declare permute functuin
	 */
	 function permute(pref, str)
	 {
	 	/**
	 	 * Set the string to an empty string of value is of negative.
	 	 */
	 	 var prefix = pref || "";
	 	 var N = str.length;

	 	 /**
	 	  * Print out the perm
	 	  */
	 	  if(N == 0){
	 	  	stack.push(prefix)
	 	  	return;
	 	  }

	 	  for (var i = 0; i < N; i++)
	 	  {
	 	  	permute(prefix + str.charAt(i), str.substring(0, i) + str.substring(i+1, N));
	 	  }
	 }

	 console.time("a");
	 permute(null, "ABCDEFGHIJKL");
	 console.timeEnd("a", "Permuted ABCDEF");
})()