From a425ac5fb3accbd2eec1f7ef6f506433f1f9bc4f Mon Sep 17 00:00:00 2001
From: Boyi C <fanthos@live.com>
Date: Tue, 12 Jul 2022 17:09:48 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A4=84=E7=90=86=20Partition<T>=20=E7=9A=84?=
 =?UTF-8?q?=E9=97=AE=E9=A2=98?=
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---
 .../java/cn/hutool/core/collection/Partition.java    | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/hutool-core/src/main/java/cn/hutool/core/collection/Partition.java b/hutool-core/src/main/java/cn/hutool/core/collection/Partition.java
index fa555b974..364af5c53 100644
--- a/hutool-core/src/main/java/cn/hutool/core/collection/Partition.java
+++ b/hutool-core/src/main/java/cn/hutool/core/collection/Partition.java
@@ -26,13 +26,14 @@ public class Partition<T> extends AbstractList<List<T>> {
 	 */
 	public Partition(List<T> list, int size) {
 		this.list = list;
-		this.size = Math.min(size, list.size());
+		this.size = size;
 	}
 
 	@Override
 	public List<T> get(int index) {
-		int start = index * size;
-		int end = Math.min(start + size, list.size());
+		int listSize = list.size();
+		int start = Math.min(index * size, listSize);
+		int end = Math.min(start + size, listSize);
 		return list.subList(start, end);
 	}
 
@@ -41,10 +42,7 @@ public class Partition<T> extends AbstractList<List<T>> {
 		// 此处采用动态计算，以应对list变
 		final int size = this.size;
 		final int total = list.size();
-		int length = total / size;
-		if(total % size > 0){
-			length += 1;
-		}
+		int length = (total + size - 1) / size;
 		return length;
 	}