diff --git a/utils.go b/utils.go
index 8b0830c..de6af9d 100644
--- a/utils.go
+++ b/utils.go
@@ -3,6 +3,9 @@ package utils
 import "math/rand"
 
 func RandArray(n int) []int {
+    // needed a seed input else it will generate the same number
+    rand.Seed(time.Now().UnixNano())
+    
     arr := make([]int, n)
     for i := 0; i <= n - 1; i++ {
         arr[i] = rand.Intn(n)