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top-100-liked/39/leetcode_test.go

@@ -0,0 +1,31 @@
+package top100liked
+
+import (
+	"testing"
+)
+
+// https://leetcode.cn/problems/symmetric-tree/description/?envType=study-plan-v2&envId=top-100-liked
+
+type TreeNode struct {
+	Val   int
+	Left  *TreeNode
+	Right *TreeNode
+}
+
+func isSymmetric(root *TreeNode) bool {
+	return check(root.Left, root.Right)
+}
+
+func check(p, q *TreeNode) bool {
+	if p == nil && q == nil {
+		return true
+	}
+	if p == nil || q == nil {
+		return false
+	}
+	return p.Val == q.Val && check(p.Left, q.Right) && check(p.Right, q.Left)
+}
+
+func Test1(t *testing.T) {
+
+}