add shuffle array

tmurphy21 · tmurphy21 · commit 3e4f8013f3ea · 2021-10-06T18:57:20.000-06:00
diff --git a/Array/Shuffle.js b/Array/Shuffle.js
@@ -0,0 +1,15 @@
+function shuffle(arr = []) {
+  const copy = arr.slice();
+
+  let currentIndex = arr.length;
+  let randomIndex;
+  while (currentIndex) {
+    randomIndex = Math.floor(Math.random() * currentIndex);
+    currentIndex--;
+
+    [copy[currentIndex], copy[randomIndex]] = [
+      copy[randomIndex], copy[currentIndex]];
+  };
+
+  return copy;
+};
