How to Create a Binary Tree in C

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What is a Binary tree? How to implement binary tree in C? Binary Tree Binary tree is one of widely used tree data structure in computer science. It is the simplest form of tree node where each node can have max of two children, known as left and right. Binary tree has what is binary tree in c practical usages where one of the most widely used scenarios are items need to be arranged in sorted manner to optimize lookup efficiency.

We will cover more topics in our next sections. Nodes in Binary Tree This is the simplest form of what is binary tree in c structure with two pointers; one left and one right to point to the sub tree nodes. For a particular node, minimum child node can be zero and maximum children can be two. Binary Tree data structure Designing a a data structure for a node is done by taking two pointer of type node. One to hold left child and another to point to right child. Node often contains a member variable to hold the value of its own.

The data structure what is binary tree in c a node of a binary tree looks like. We generally create a new node setting both left and right to NULL. Later we asign left child pointer and then right child pointer once a new node comes for addition. Binary Tree node Addition Now this new allocated node can be attached to an existing node in either in right side or left side. There will be a comparison between the value of this node to the parent node where it is getting added.

If value is less than parent it can be added to left child else this should be added in right. This is the logic often used in binary search tree algorithm.

We will what is binary tree in c this more in our next topic. The above logic is true when only root exists in the tree. But adding a node to populated binary tree is more complex. We should consider this logic right from root recursively till the condition matches. Printing a Binary Tree If we observe a binary tree we would find that lesser values are located at right side and greater values are at right side. This is the way we arranged it during the population time and thus tree elements are sorted in ascending order.

Now printing entire binary tree would be in the same way as it has been arranged. We would consider printing left child first and then the right child. Printing is also recursive in nature and we should consider left child repeatedly till we reach most left node and print it one after another with this same logic.

Total number of nodes Computation starts from the root node and it goes recursively to the sub tree till it reaches the leaf node. In this way computation adds 1 for the node and further calls the same function for left and right sub trees. Leaf node does not have further sub child thus we return zero and last call returns. Finally top most parent call accumulates all the count and returns to the caller.

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