From a9b08161c3020f3086d34d00aec4c843252e5383 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Wed, 11 Sep 2019 16:28:34 +0800
Subject: [PATCH] add min and max

---
 CHANGELOG.md                                  |  1 +
 .../cn/hutool/core/collection/CollUtil.java   | 26 +++++++++++++++++++
 .../java/cn/hutool/core/map/TableMap.java     |  2 +-
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5efe4df3c..010dd6f5b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@
 * 【setting】     SettingLoader支持自定义分隔符
 * 【http】         Content-Type添加默认值（issue#I11YHI@Gitee）
 * 【socket】     增加Closeable接口（issue#532@Github）
+* 【core】        CollUtil增加min和max方法
 
 ### Bug修复
 * 【core】         修复NetUtil.getUsableLocalPort问题（pr#69@Gitee）
diff --git a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
index 2e0d91a57..a4334fd5c 100644
--- a/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/collection/CollUtil.java
@@ -2499,6 +2499,32 @@ public class CollUtil {
 
 		return values;
 	}
+	
+	/**
+	 * 取最大值
+	 * 
+	 * @param <T> 元素类型
+	 * @param coll 集合
+	 * @return 最大值
+	 * @since 4.6.5
+	 * @see Collections#max(Collection)
+	 */
+	public static <T extends Comparable<? super T>> T max(Collection<T> coll) {
+		return Collections.max(coll);
+	}
+	
+	/**
+	 * 取最大值
+	 * 
+	 * @param <T> 元素类型
+	 * @param coll 集合
+	 * @return 最大值
+	 * @since 4.6.5
+	 * @see Collections#min(Collection)
+	 */
+	public static <T extends Comparable<? super T>> T min(Collection<T> coll) {
+		return Collections.min(coll);
+	}
 
 	// ---------------------------------------------------------------------------------------------- Interface start
 	/**
diff --git a/hutool-core/src/main/java/cn/hutool/core/map/TableMap.java b/hutool-core/src/main/java/cn/hutool/core/map/TableMap.java
index d2d0eb588..e25a24716 100644
--- a/hutool-core/src/main/java/cn/hutool/core/map/TableMap.java
+++ b/hutool-core/src/main/java/cn/hutool/core/map/TableMap.java
@@ -19,7 +19,7 @@ import cn.hutool.core.util.ArrayUtil;
  * @param <V>
  */
 public class TableMap<K, V> implements Map<K, V>, Serializable {
-	private static final long serialVersionUID = -5852304468076152385L;
+	private static final long serialVersionUID = 1L;
 
 	private List<K> keys;
 	private List<V> values;