Give some valid justifications for following:   Incorrect Algorithm  Why we need algorithm analysis?  Write Difference between Program vs. Algorithm.  Basic elements of an algorithm.

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Give some valid justifications for following: 
 Incorrect Algorithm
 Why we need algorithm analysis?
 Write Difference between Program vs. Algorithm.
 Basic elements of an algorithm.

Expert Solution
Solution 1 :

Incorrect Algorithm : 
Incorrect Algorithm, there are two condition in which we can say that algorithm is incorrect, first when algorithm has some error like LOGICAL Error which developer/programmer does, second when program executes properly but shows unexpected result of execution, it creates conflict between the client and developer, i.e algorithm executes properly without error but not shows proper result. 

Solution 2 :

Why we need algorithm analysis?

It is an important part for computational complexity theory
It helps us to estimate required resources of algorithm to solve the requirement
Types of Analysis we do : 
Worst Case
Best Case
Average Case

Above types will describe the time, how much time algorithm takes to execute as per the inputs provided by the users.

 

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