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top-100-liked/38/leetcode_test.go

@@ -0,0 +1,27 @@
+package top100liked
+
+import (
+	"testing"
+)
+
+// https://leetcode.cn/problems/invert-binary-tree/description/?envType=study-plan-v2&envId=top-100-liked
+
+type TreeNode struct {
+	Val   int
+	Left  *TreeNode
+	Right *TreeNode
+}
+
+func invertTree(root *TreeNode) *TreeNode {
+	if root == nil {
+		return nil
+	}
+	root.Left, root.Right = root.Right, root.Left
+	invertTree(root.Left)
+	invertTree(root.Right)
+	return root
+}
+
+func Test1(t *testing.T) {
+
+}