Big Sorting 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 ProblemBig Sorting– Hacker Rank Solution

Big Sorting – Hacker Rank Solution

Problem:

Consider an array of numeric strings where each string is a positive number with anywhere from  to  digits. Sort the array’s elements in non-decreasing, or ascending order of their integer values and return the sorted array.

Example

Return the array [‘1’, ‘3’, ‘150’, ‘200’].

Function Description

Complete the bigSorting function in the editor below.

bigSorting has the following parameter(s):

  • string unsorted[n]: an unsorted array of integers as strings

Returns

  • string[n]: the array sorted in numerical order

Input Format

The first line contains an integer, , the number of strings in .
Each of the  subsequent lines contains an integer string, .

Constraints

  • Each string is guaranteed to represent a positive integer.
  • There will be no leading zeros.
  • The total number of digits across all strings in  is between  and  (inclusive).

Sample Input 0

6
31415926535897932384626433832795
1
3
10
3
5

Sample Output 0

1
3
3
5
10
31415926535897932384626433832795

Explanation 0

The initial array of strings is . When we order each string by the real-world integer value it represents, we get:

We then print each value on a new line, from smallest to largest.

Sample Input 1

8
1
2
100
12303479849857341718340192371
3084193741082937
3084193741082938
111
200

Sample Output 1

1
2
100
111
200
3084193741082937
3084193741082938
12303479849857341718340192371
Big Sorting – Hacker Rank Solution
import java.util.Arrays;
import java.util.Comparator;
import java.util.Scanner;

/**
 * @author Techno-RJ
 *
 */
public class BigSorting {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int n = in.nextInt();
		String[] unsorted = new String[n];
		for (int unsorted_i = 0; unsorted_i < n; unsorted_i++) {
			unsorted[unsorted_i] = in.next();
		}

		Arrays.sort(unsorted, new Comparator<String>() {

			public int compare(String s1, String s2) {
				return compareStrings(s1, s2);
			}
		});
		printArray(unsorted);
		in.close();
	}

	private static int compareStrings(String s1, String s2) {
		if (s1.length() < s2.length()) {
			return -1;
		} else if (s1.length() > s2.length()) {
			return 1;
		}
		for (int k = 0; k < s1.length(); k++) {
			if ((int) s1.charAt(k) < (int) s2.charAt(k))
				return -1;
			if ((int) s1.charAt(k) > (int) s2.charAt(k))
				return 1;

		}
		return 0;

	}

	private static void printArray(String[] unsorted) {

		for (String string : unsorted) {
			System.out.println(string);
		}

	}

}

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