Find the Median 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 ProblemFind the Median – Hacker Rank Solution

Find the Median – Hacker Rank Solution

Problem:

The median of a list of numbers is essentially its middle element after sorting. The same number of elements occur after it as before. Given a list of numbers with an odd number of elements, find the median?

Example

The sorted array . The middle element and the median is .

Function Description

Complete the findMedian function in the editor below.

findMedian has the following parameter(s):

  • int arr[n]: an unsorted array of integers

Returns

  • int: the median of the array

Input Format

image 122
Find the Median – Hacker Rank Solution
import java.util.Arrays;
import java.util.Scanner;

/**
 * @author Techno-RJ
 *
 */
public class FindTheMedian {

	public static void main(String[] args) {
		/*
		 * Enter your code here. Read input from STDIN. Print output to STDOUT. Your
		 * class should be named Solution.
		 */
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int a[] = new int[n];
		for (int i = 0; i < n; i++)
			a[i] = sc.nextInt();
		Arrays.sort(a);
		if ((n & 1) == 1) {
			System.out.println(a[n / 2]);
		} else {
			System.out.println((a[n / 2] + a[n / 2 + 1]) / 2);
		}
		sc.close();
	}
}

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