Migratory Birds in Algorithm | HackerRank Programming Solutions | HackerRank Problem Solving Solutions in Java [💯Correct]

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Algorithm Solution in Hackerrank | Java Hackerrank Solutions

Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank, Algorithm Solutions of Problem Solving Section in Java. At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.

In this post, you will find the solution for Migratory Birds in Java-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.

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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 Problem – Migratory Birds – Hacker Rank Solution

Migratory Birds– Hacker Rank Solution

Problem:

Given an array of bird sightings where every element represents a bird type id, determine the id of the most frequently sighted type. If more than 1 type has been spotted that maximum amount, return the smallest of their ids.

Example

image 59

Function Description

Complete the migratoryBirds function in the editor below.

migratoryBirds has the following parameter(s):

  • int arr[n]: the types of birds sighted

Returns

  • int: the lowest type id of the most frequently sighted birds

Input Format

The first line contains an integer, , the size of .
The second line describes  as  space-separated integers, each a type number of the bird sighted.

Constraints

image 60

Sample Input 0

6
1 4 4 4 5 3

Sample Output 0

4

Explanation 0

The different types of birds occur in the following frequencies:

  • Type :  bird
  • Type :  birds
  • Type :  bird
  • Type :  birds
  • Type :  bird

The type number that occurs at the highest frequency is type , so we print  as our answer.

Sample Input 1

11
1 2 3 4 5 4 3 2 1 3 4

Sample Output 1

3

Explanation 1

The different types of birds occur in the following frequencies:

image 61
Migratory Birds – Hacker Rank Solution
import java.util.Scanner;

/**
 * @author Techno-RJ
 *
 */
public class MigratoryBirds {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		int[] types = new int[n];
		int maxFreqValue = 0, freqId = 0;
		for (int types_i = 0; types_i < n; types_i++) {
			int index = in.nextInt();
			types[index - 1]++;
		}

		for (int i = 0; i < n; i++) {
			if (types[i] > maxFreqValue) {
				maxFreqValue = types[i];
				freqId = i + 1;
			}
		}
		System.out.println(freqId);
		in.close();
	}
}

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