diff --git a/packages/core/array.js b/packages/core/array.js
index fcacdca..bdd66fc 100644
--- a/packages/core/array.js
+++ b/packages/core/array.js
@@ -13,3 +13,13 @@ export function fromObject(object) {
   }
   return array;
 }
+
+export function shuffleInPlace(array) {
+  let i = 0, j = 0, temp = null;
+  for (i = array.length - 1; i > 0; i -= 1) {
+    j = Math.floor(Math.random() * (i + 1))
+    temp = array[i]
+    array[i] = array[j]
+    array[j] = temp
+  }
+}