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Q. Write down the recursive function to count the number of the nodes in the binary tree.
Ans.
Recursive Function to count no. of Nodes in Binary Tree is written below
The number NUM of nodes in T is 1 greater than the number NULL of nodes in the left subtree of T plus the number NUMR of nodes in the right subtree of the T. Count( LEFT , RIGHT , ROOT , NUM.)
This procedure finds the number NUM of nodes in a binary tree T in memory.
1. If ROOT = NULL, then : Set NUM := 0, & Return.
2. Call COUNT( LEFT , RIGHT , LEFT[ ROOT], NUML).
3. Call COUNT ( LEFT , RIGHT, RIGHT[ ROOT], NUMR).
4. Set NUM := NUML +NUMR+1.
5. Return.
The most common way to insert nodes to a general tree is to first discover the desired parent of the node you desire to insert, and then insert the node to the parent's child list.
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