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Create Count Complete Tree Nodes.cpp #7

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27 changes: 27 additions & 0 deletions Count Complete Tree Nodes.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
class Solution {
public:
int findleftheight(TreeNode* root){
int h=0;
while(root!=NULL){
h++;
root=root->left;
}
return h;
}
int findrightheight(TreeNode* root){
int h1=0;
while(root!=NULL){
h1++;
root=root->right;
}
return h1;
}
int countNodes(TreeNode* root) {
if(root==NULL)return 0;
int lh=findleftheight(root);
int rh=findrightheight(root);
if(lh==rh)return (1 << lh)-1;
return 1+countNodes(root->left) + countNodes(root->right);

}
};