From 87a02c080d164c5f8faa013d25b907db80fd2a69 Mon Sep 17 00:00:00 2001
From: shaw <53377526+jtcymc@users.noreply.github.com>
Date: Sat, 21 Jun 2025 23:55:17 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BC=98=E5=8C=96=E9=9A=8F=E6=9C=BA?=
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在选择随机元素时，使用 Math.floor() 替代 Math.round()
此修改解决了随机元素概率不均的问题，提高了算法的公平性
主要应用于人员抽奖和随机球数据生成两个场景
---
 src/utils/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils/index.ts b/src/utils/index.ts
index a8caa4a..0e714f0 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -32,7 +32,7 @@ export function addOtherInfo(personList: any[]) {
 }
 
 export function selectCard(cardIndexArr: number[], tableLength: number, personId: number): number {
-  const cardIndex = Math.round(Math.random() * (tableLength - 1))
+  const cardIndex = Math.floor(Math.random() * (tableLength - 1))
   if (cardIndexArr.includes(cardIndex)) {
     return selectCard(cardIndexArr, tableLength, personId)
   }