From 8e0a5e20296310acf8f83677ae6cd92e07435927 Mon Sep 17 00:00:00 2001 From: achao Date: Wed, 10 Nov 2021 20:31:32 +0800 Subject: [PATCH] =?UTF-8?q?=E7=94=A8RandomUtil?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../src/main/java/cn/hutool/core/util/NumberUtil.java | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java index 08f30132a..ec92e1a21 100644 --- a/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java +++ b/hutool-core/src/main/java/cn/hutool/core/util/NumberUtil.java @@ -1362,10 +1362,9 @@ public class NumberUtil { throw new UtilException("Size is larger than range between begin and end!"); } - Random ran = new Random(); - Set set = new HashSet<>(); + Set set = new HashSet<>(Math.max((int) (size / .75f) + 1, 16)); while (set.size() < size) { - set.add(begin + ran.nextInt(end - begin)); + set.add(begin + RandomUtil.randomInt(end - begin)); } return set.toArray(new Integer[size]);