Non-recursive algorithm, Data Structure & Algorithms

Assignment Help:


QWrite 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.

 


 

 


Related Discussions:- Non-recursive algorithm

Define data model, Define data model?  A data model is a collection of ...

Define data model?  A data model is a collection of conceptual tools for explaning data, data relationships, data semantics and consistency constraints.

Design a binary tree, (a) Suppose that t is a binary tree of integers (that...

(a) Suppose that t is a binary tree of integers (that is, an object of type BinTree of Int.) in the state shown in Figure 3.   Give the vectors returned by each of the f

Algorithms, Data array A has data series from 1,000,000 to 1 with step size...

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.

Array and two-dimensional array, Q. Describe the term array.  How do we rep...

Q. Describe the term array.  How do we represent two-dimensional arrays in memory?  Explain how we calculate the address of an element in a two dimensional array.

Nonrecursive implementation of a recursive algorithm?, What data structure ...

What data structure would you mostly likely see in a nonrecursive execution of a recursive algorithm? Stack

Explain np-complete decision problem, a. Determine the result of inserting ...

a. Determine the result of inserting the keys 4,19, 17, 11, 3, 12, 8, 20, 22, 23, 13, 18, 14, 16, 1, 2, 24, 25, 26, 5 in order to an empty B-Tree of degree 3. Only draw the configu

Homework, Write a recursive function the computes the number of digits in a...

Write a recursive function the computes the number of digits in a positive integer n. For example if n = 6598, the function should return 4. Find a variant expression and a thresho

Postfix expression, Ask question Write an algorithm for the evaluation of a...

Ask question Write an algorithm for the evaluation of a postfix expression using a stack#Minimum 100 words accepted#

Expression trees, What are the expression trees? Represent the below writte...

What are the expression trees? Represent the below written expression using a tree. Give a relevant comment on the result that you get when this tree is traversed in Preorder,

Storing street addresses with doubly linked lists, Write a C++ program with...

Write a C++ program with header and source les to store street addresses using the Doubly Linked List ADT. Modify the Node class from Lab Assignment 3 so that it becomes a node in

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd