Algorithm for pre-order traversal, Data Structure & Algorithms

Hear is given a set of input representing the nodes of a binary tree, write a non recursive algorithm that must be able to give the output in three traversal orders. Write down an algorithm for checking validity of the input, i.e., the program must know if the input given is duplicated, disjoint and has a loop.                                                                                                             

The Pre-order Traversal

The process of doing a pre-order traversal iteratively then has the following steps (assuming that a stack is available to hold pointers to the proper nodes):

1. push NULL onto the stack

2. start at the root and begin execution

3. write the information in the node

4. if the pointer to the right is not NULL push

the pointer onto the stack

5. if the pointer to the left is not NULL move the pointer to the node on the left

6. if the pointer to the left is NULL pop the stack

7. repeat steps 3 to 7 until no nodes remain

Posted Date: 7/9/2012 10:08:36 PM | Location : United States







Related Discussions:- Algorithm for pre-order traversal, Assignment Help, Ask Question on Algorithm for pre-order traversal, Get Answer, Expert's Help, Algorithm for pre-order traversal Discussions

Write discussion on Algorithm for pre-order traversal
Your posts are moderated
Related Questions
The simplest implementation of the Dijkstra's algorithm stores vertices of set Q into an ordinary linked list or array, and operation Extract-Min(Q) is just a linear search through

1. For the ER diagram you created in assignment, the artefact of the conceptual database design, map the ER model into the relational model according to how it was designed in the

write pseudocode to implement a queue with two stacks


A town contains a total of 5000 houses. Every house owner has to pay tax based on value of the house. Houses over $200 000 pay 2% of their value in tax, houses over $100 000 pay 1.

Data array A has data series from 1,000,000 to 1 with step size 1, which is in perfect decreasing order. Data array B has data series from 1 to 1,000,000, which is in random order.

Q.1 Write procedures/ Algorithm to insert and delete an element in to array. Q.2. Write an algorithm for binary search. What are the conditions under which sequential search of

Construct G for α, n, and W given as command line parameters. Throw away edges that have an asymmetric relation between nodes. That is, if A is connected to B, but B is not connect

Assertions and Abstract Data Types Even though we have defined assertions in terms of programs, notion can be extended to abstract data types (which are mathematical entities).

I=PR/12 numbers of years : Interest Rate up to 1 years : 5.50 Up to 5 years : 6.50 More than 5 year : 6.75 please design an algorithm based on the above information