"tree ds" Code Answer's
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tree data structure
Nutty Narwhal
on Oct 05, 2020
If root is NULL
then create root node
return
If root exists then
compare the data with node.data
while until insertion position is located
If data is greater than node.data
goto right subtree
else
goto left subtree
endwhile
insert data
end If Source: www.tutorialspoint.com
tree ds
Encouraging Elephant
on Jul 13, 2020
// Tree traversal in C
#include <stdio.h>
#include <stdlib.h>
struct node {
int item;
struct node* left;
struct node* right;
};
// Inorder traversal
void inorderTraversal(struct node* root) {
if (root == NULL) return;
inorderTraversal(root->left);
printf("%d ->", root->item);
inorderTraversal(root->right);
}
// preorderTraversal traversal
void preorderTraversal(struct node* root) {
if (root == NULL) return;
printf("%d ->", root->item);
preorderTraversal(root->left);
preorderTraversal(root->right);
}
// postorderTraversal traversal
void postorderTraversal(struct node* root) {
if (root == NULL) return;
postorderTraversal(root->left);
postorderTraversal(root->right);
printf("%d ->", root->item);
}
// Create a new Node
struct node* createNode(value) {
struct node* newNode = malloc(sizeof(struct node));
newNode->item = value;
newNode->left = NULL;
newNode->right = NULL;
return newNode;
}
// Insert on the left of the node
struct node* insertLeft(struct node* root, int value) {
root->left = createNode(value);
return root->left;
}
// Insert on the right of the node
struct node* insertRight(struct node* root, int value) {
root->right = createNode(value);
return root->right;
}
int main() {
struct node* root = createNode(1);
insertLeft(root, 12);
insertRight(root, 9);
insertLeft(root->left, 5);
insertRight(root->left, 6);
printf("Inorder traversal \n");
inorderTraversal(root);
printf("\nPreorder traversal \n");
preorderTraversal(root);
printf("\nPostorder traversal \n");
postorderTraversal(root);
}Source: www.programiz.com
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