"how to compare the biggest node with the same level BST node c++" Code Answer's
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how to compare the biggest node with the same level BST node c++
Modern Mongoose
on Apr 16, 2021
// C++ program to find largest
// value on each level of binary tree.
#include <bits/stdc++.h>
using namespace std;
/* A binary tree node has data,
pointer to left child and a
pointer to right child */
struct Node {
int val;
struct Node *left, *right;
};
/* Recursive function to find
the largest value on each level */
void helper(vector<int>& res, Node* root, int d)
{
if (!root)
return;
// Expand list size
if (d == res.size())
res.push_back(root->val);
else
// to ensure largest value
// on level is being stored
res[d] = max(res[d], root->val);
// Recursively traverse left and
// right subtrees in order to find
// out the largest value on each level
helper(res, root->left, d + 1);
helper(res, root->right, d + 1);
}
// function to find largest values
vector<int> largestValues(Node* root)
{
vector<int> res;
helper(res, root, 0);
return res;
}
/* Helper function that allocates a
new node with the given data and
NULL left and right pointers. */
Node* newNode(int data)
{
Node* temp = new Node;
temp->val = data;
temp->left = temp->right = NULL;
return temp;
}
// Driver code
int main()
{
/* Let us construct a Binary Tree
4
/ \
9 2
/ \ \
3 5 7 */
Node* root = NULL;
root = newNode(4);
root->left = newNode(9);
root->right = newNode(2);
root->left->left = newNode(3);
root->left->right = newNode(5);
root->right->right = newNode(7);
vector<int> res = largestValues(root);
for (int i = 0; i < res.size(); i++)
cout << res[i] << " ";
return 0;
}
how to compare the biggest node with the same level BST node c++
Modern Mongoose
on Apr 16, 2021
// C++ implementation to print largest
// value in each level of Binary Tree
#include <bits/stdc++.h>
using namespace std;
// structure of a node of binary tree
struct Node {
int data;
Node *left, *right;
};
// function to get a new node
Node* newNode(int data)
{
// allocate space
Node* temp = new Node;
// put in the data
temp->data = data;
temp->left = temp->right = NULL;
return temp;
}
// function to print largest value
// in each level of Binary Tree
void largestValueInEachLevel(Node* root)
{
// if tree is empty
if (!root)
return;
queue<Node*> q;
int nc, max;
// push root to the queue 'q'
q.push(root);
while (1) {
// node count for the current level
nc = q.size();
// if true then all the nodes of
// the tree have been traversed
if (nc == 0)
break;
// maximum element for the current
// level
max = INT_MIN;
while (nc--) {
// get the front element from 'q'
Node* front = q.front();
// remove front element from 'q'
q.pop();
// if true, then update 'max'
if (max < front->data)
max = front->data;
// if left child exists
if (front->left)
q.push(front->left);
// if right child exists
if (front->right)
q.push(front->right);
}
// print maximum element of
// current level
cout << max << " ";
}
}
// Driver code
int main()
{
/* Construct a Binary Tree
4
/ \
9 2
/ \ \
3 5 7 */
Node* root = NULL;
root = newNode(4);
root->left = newNode(9);
root->right = newNode(2);
root->left->left = newNode(3);
root->left->right = newNode(5);
root->right->right = newNode(7);
// Function call
largestValueInEachLevel(root);
return 0;
}
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