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Q. Write down the non-recursive algorithm to traverse a tree in preorder. Ans:
Q. Write down the non-recursive algorithm to traverse a tree in preorder.
Ans:
The Non- Recursive algorithm for preorder traversal is written below: Initially in the begnining push NULL onto stack and then set PTR=Root. Keep on repeating the following steps until PTR= NULL. 1. Preorder down the left most paths routed at the PTR. 2. Processing each node N on the path and pushing each right child if there is onto the stack.[The traversing will stop when (PTR)=NULL] 3. Backtracking: pop and assign to PTR the top element on stack. If PTR is not equal to NULL then return to step 1 otherwise it exits.
The Non- Recursive algorithm for preorder traversal is written below: Initially in the begnining
push NULL onto stack and then set PTR=Root. Keep on repeating the following steps until PTR= NULL.
1. Preorder down the left most paths routed at the PTR.
2. Processing each node N on the path and pushing each right child if there is onto the stack.[The traversing will stop when (PTR)=NULL]
3. Backtracking: pop and assign to PTR the top element on stack. If PTR is not equal to NULL then return to step 1 otherwise it exits.
Algorithm for insertion of any element into the circular queue: Step-1: If "rear" of the queue is pointing at the last position then go to step-2 or else Step-3 Step-2: make
Q. Prove the hypothesis that "A tree having 'm' nodes has exactly (m-1) branches". Ans: A tree having m number of nodes has exactly (m-1) branches Proof: A root
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