From 651305e8ce2014e44b791d2a0af5c865f76cd037 Mon Sep 17 00:00:00 2001
From: neverland <chenjiahan@youzan.com>
Date: Wed, 23 Mar 2022 22:09:48 +0800
Subject: [PATCH] feat(NumberKeyboard): improve shuffle algorithm (#10428)

---
 packages/vant/src/number-keyboard/NumberKeyboard.tsx | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/packages/vant/src/number-keyboard/NumberKeyboard.tsx b/packages/vant/src/number-keyboard/NumberKeyboard.tsx
index 91e86f6ab..94c92d4b7 100644
--- a/packages/vant/src/number-keyboard/NumberKeyboard.tsx
+++ b/packages/vant/src/number-keyboard/NumberKeyboard.tsx
@@ -65,6 +65,16 @@ const numberKeyboardProps = {
 
 export type NumberKeyboardProps = ExtractPropTypes<typeof numberKeyboardProps>;
 
+function shuffle(array: unknown[]) {
+  for (let i = array.length - 1; i > 0; i--) {
+    const j = Math.floor(Math.random() * (i + 1));
+    const temp = array[i];
+    array[i] = array[j];
+    array[j] = temp;
+  }
+  return array;
+}
+
 export default defineComponent({
   name,
 
@@ -89,7 +99,7 @@ export default defineComponent({
         .map((_, i) => ({ text: i + 1 }));
 
       if (props.randomKeyOrder) {
-        keys.sort(() => (Math.random() > 0.5 ? 1 : -1));
+        shuffle(keys);
       }
 
       return keys;