From 98f7414d9e49d08ca488e928f7b60460d317f1cf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=99=BD=E8=8C=B6=E6=B8=85=E6=AC=A2?=
 <go_developer@163.com>
Date: Wed, 26 Nov 2025 21:00:36 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E5=A2=9E=E5=8A=A0=E6=95=B0=E7=BB=84?=
 =?UTF-8?q?=E5=88=86=E7=BB=84=E8=83=BD=E5=8A=9B?=
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---
 op_array/util.go | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/op_array/util.go b/op_array/util.go
index 9efa97e..118abd1 100644
--- a/op_array/util.go
+++ b/op_array/util.go
@@ -7,6 +7,8 @@
 // Date : 2025-11-25 11:30
 package op_array
 
+import "fmt"
+
 // ToMap 数组转map
 func ToMap[Key comparable, Value any](dataList []Value, keyFormat func(item Value) Key) map[Key]Value {
 	res := make(map[Key]Value)
@@ -47,3 +49,22 @@ func Filter[Value any](dataList []Value, filterValue func(item Value) bool) []Va
 	}
 	return res
 }
+
+// Group 按照指定字段进行分组
+func Group[Key comparable, Value any](dataList []Value, keyFormat func(item Value) Key) [][]Value {
+	keyList := make([]string, 0)
+	dataTable := make(map[string][]Value)
+	res := make([][]Value, 0)
+	for _, item := range dataList {
+		key := fmt.Sprintf("%v", keyFormat(item))
+		if _, ok := dataTable[key]; !ok {
+			keyList = append(keyList, key)
+		}
+		dataTable[key] = append(dataTable[key], item)
+	}
+	formatList := make([][]Value, 0)
+	for _, key := range keyList {
+		formatList = append(formatList, dataTable[key])
+	}
+	return res
+}