Simple Array Sum in Algorithm | HackerRank Programming Solutions | HackerRank Problem Solving Solutions in Java [💯Correct]

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Introduction To Algorithm

The word Algorithm means “a process or set of rules to be followed in calculations or other problem-solving operations”. Therefore Algorithm refers to a set of rules/instructions that step-by-step define how a work is to be executed upon in order to get the expected results. 

Advantages of Algorithms:

  • It is easy to understand.
  • Algorithm is a step-wise representation of a solution to a given problem.
  • In Algorithm the problem is broken down into smaller pieces or steps hence, it is easier for the programmer to convert it into an actual program.

Link for the ProblemSimple Array Sum– Hacker Rank Solution

Simple Array Sum – Hacker Rank Solution

Problem:

Given an array of integers, find the sum of its elements.

For example, if the array ,

image 34

Function Description

Complete the simpleArraySum function in the editor below. It must return the sum of the array elements as an integer.

simpleArraySum has the following parameter(s):

  • ar: an array of integers

Input Format

The first line contains an integer, , denoting the size of the array.
The second line contains  space-separated integers representing the array’s elements.

Constraints

Output Format

Print the sum of the array’s elements as a single integer.

Sample Input

6
1 2 3 4 10 11

Sample Output

31

Explanation

We print the sum of the array’s elements: 

image 33
Simple Array Sum – Hacker Rank Solution
import java.util.Scanner;

/**
 * @author Techno-RJ
 *
 */
public class SimpleArraySum {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int noOfElements = sc.nextInt();
		int sum = 0;
		for (int i = 0; i < noOfElements; i++) {
			sum = sum + sc.nextInt();
		}
		System.out.println(sum);
		sc.close();
	}
}

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