From 4988e110979561fef114c89c8a2b4d8cb964df9b Mon Sep 17 00:00:00 2001
From: ductnn <trannhuduc531998@gmail.com>
Date: Mon, 27 Nov 2023 16:28:00 +0700
Subject: [PATCH] add sol

---
 leetcode/89.GrayCode/grayCode.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 leetcode/89.GrayCode/grayCode.go

diff --git a/leetcode/89.GrayCode/grayCode.go b/leetcode/89.GrayCode/grayCode.go
new file mode 100644
index 0000000..4f19b21
--- /dev/null
+++ b/leetcode/89.GrayCode/grayCode.go
@@ -0,0 +1,18 @@
+package main
+
+import (
+	"fmt"
+)
+
+func grayCode(n int) []int {
+	ans := []int{}
+	for i := 0; i < 1<<n; i++ {
+		ans = append(ans, i^(i>>1))
+	}
+	return ans
+}
+
+func main() {
+	n := 2
+	fmt.Println(grayCode(n))
+}