Created
June 15, 2020 02:40
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| TreeNode* lowestCommonAncestor(TreeNode* root, TreeNode* p, TreeNode* q) { | |
| if( root == p || root == q || root == NULL) | |
| return root; | |
| TreeNode * parent1 = lowestCommonAncestor(root->left, p, q); | |
| TreeNode * parent2 = lowestCommonAncestor(root->right, p, q); | |
| if( parent1 && parent2) | |
| return root; | |
| else | |
| return parent1 ? parent1:parent2; | |
| } |
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