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authorYuqian Yang <crupest@crupest.life>2025-02-28 23:13:39 +0800
committerYuqian Yang <crupest@crupest.life>2025-02-28 23:13:39 +0800
commitdc1f0c4c0096013799416664894c5194dc7e1f52 (patch)
tree2f5d235f778cd720f4c39ec3e56b77ba6d99f375 /store/works/solutions/leetcode/cpp/543.cpp
parent7299d424d90b1effb6db69e3476ddd5af72eeba4 (diff)
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chore(store): move everything to store.
Diffstat (limited to 'store/works/solutions/leetcode/cpp/543.cpp')
-rw-r--r--store/works/solutions/leetcode/cpp/543.cpp32
1 files changed, 32 insertions, 0 deletions
diff --git a/store/works/solutions/leetcode/cpp/543.cpp b/store/works/solutions/leetcode/cpp/543.cpp
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--- /dev/null
+++ b/store/works/solutions/leetcode/cpp/543.cpp
@@ -0,0 +1,32 @@
+struct TreeNode {
+ int val;
+ TreeNode *left;
+ TreeNode *right;
+ TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
+};
+
+#include <algorithm>
+
+class Solution {
+public:
+ int diameterOfBinaryTree(TreeNode *root) {
+ int max = 0;
+ depth(root, max);
+ return max;
+ }
+
+ static int depth(TreeNode *root, int &max) {
+ if (root == nullptr)
+ return -1;
+
+ auto left = depth(root->left, max) + 1;
+ auto right = depth(root->right, max) + 1;
+
+ auto current_max = left + right;
+ if (current_max > max) {
+ max = current_max;
+ }
+
+ return std::max(left, right);
+ }
+};