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-rw-r--r--other/construct_string_binary_tree.cpp21
1 files changed, 21 insertions, 0 deletions
diff --git a/other/construct_string_binary_tree.cpp b/other/construct_string_binary_tree.cpp
new file mode 100644
index 0000000..a63e3c9
--- /dev/null
+++ b/other/construct_string_binary_tree.cpp
@@ -0,0 +1,21 @@
+#include "leetcode.h"
+
+class Solution {
+public:
+ string tree2str(TreeNode *root) {
+ if (!root)
+ return "";
+ string ans = to_string(root->val);
+ if (root->left || root->right) {
+ ans.push_back('(');
+ ans += tree2str(root->left);
+ ans.push_back(')');
+ }
+ if (root->right) {
+ ans.push_back('(');
+ ans += tree2str(root->right);
+ ans.push_back(')');
+ }
+ return ans;
+ }
+};