refactor: implements Sattolo cycle for shuffle function

Author: Kevin Hermawan

Diff for: README.md

@@ -154,7 +154,7 @@ console.log(result); // [2, 3, 4, 5, 1]
 
 #### [shuffle](/src/shuffle.ts)
 
-Shuffles the element of the array. Implements [Fisher-Yates shuffle Algorithm](https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle).
+Shuffles the element of the array. Implements [Sattolo cycle](https://rosettacode.org/wiki/Sattolo_cycle).
 
 ```ts
 import { shuffle } from 'enhanced-array';

Diff for: src/shuffle.ts

@@ -1,10 +1,12 @@
 export function shuffle<T>(array: T[]) {
   const result = array;
 
-  for (let i = result.length - 1; i > 0; i -= 1) {
-    const randomIndex = Math.floor(Math.random() * (i + 1));
+  for (let i = result.length; i > 1; i--) {
+    const randomIndex = Math.floor(Math.random() * i);
 
-    result.splice(i, 1, result.splice(randomIndex, 1, result[i])[0]);
+    const temp = result[i - 1];
+    result[i - i] = result[randomIndex];
+    result[randomIndex] = temp;
   }
 
   return result;