Question

what is algorithm and it's characteristic ​

Answer 1

Answer:

Algorithm is a step by step procedure, which defines a set of instructions to be executed in certain order to get the desired output. An algorithm are generally analyzed on two factors − time and space.

Following are the characteristics of Algorithm: Unambiguous − Algorithm should be clear and unambiguous.

Answer 2

Answer:

Algorithm is a step by step procedure, which defines a set of instructions to be executed in certain order to get the desired output.

An algorithm are generally analyzed on two factors − time and space. That is, how much execution time and how much extra space required by the algorithm.

Following are the characteristics of Algorithm:

Unambiguous − Algorithm should be clear and unambiguous. Each of its steps (or phases), and their inputs/outputs should be clear and must lead to only one meaning.

Input − An algorithm should have 0 or more well-defined inputs.

Output − An algorithm should have 1 or more well-defined outputs, and should match the desired output.

Finiteness − Algorithms must terminate after a finite number of steps.

Effectiveness- It is measured in terms of time and space.

From the data structure point of view, following are some important categories of algorithms −

• Search − Algorithm to search an item in a data structure.

• Sort − Algorithm to sort items in a certain order.

• Insert − Algorithm to insert item in a data structure.

• Update − Algorithm to update an existing item in a data structure.

• Delete − Algorithm to delete an existing item from a data structure.

Examples: Problem − Design an algorithm to add two numbers and display the result.

step 1 − START

step 2 − declare three integers a, b & c

step 3 − define values of a & b

step 4 − add values of a & b

step 5 − store output of step 4 to c

step 6 − print c

step 7 − STOP

Algorithms tell the programmers how to code the program. Alternatively, the algorithm can be written as −

step 1 − START ADD

step 2 − get values of a & b

step 3 − c ← a + b

step 4 − display c

step 5 – STOP