From 535a699584473a45cee8317203e20e7302533013 Mon Sep 17 00:00:00 2001
From: Christopher Reiter <christopher.reiter@blackforestbytes.de>
Date: Wed, 5 Nov 2025 14:45:38 +0100
Subject: [PATCH] Add `ArrShuffle` function to shuffle array elements

---
 langext/array.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/langext/array.go b/langext/array.go
index 2dc496a..f07b3b7 100644
--- a/langext/array.go
+++ b/langext/array.go
@@ -3,6 +3,7 @@ package langext
 import (
 	"errors"
 	"fmt"
+	"math/rand"
 	"reflect"
 )
 
@@ -608,3 +609,12 @@ func ArrGroupBy[T1 any, T2 comparable](arr []T1, groupfunc func(v T1) T2) map[T2
 
 	return r
 }
+
+func ArrShuffle[T any](arr []T) []T {
+	for i := range arr {
+		j := rand.Intn(i + 1)
+		arr[i], arr[j] = arr[j], arr[i]
+	}
+
+	return arr
+}