Programming Example

Write a program to input twenty names in an array. Arrange these names in descending order of letters, using the bubble sort technique.

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💻 Practical Program

📘 Step by Step Learning

Study this program carefully to understand the logic, output, and explanation in a structured way.

Information & Algorithm

Given Input:

Expected Output:

Program Code

import java.util.Scanner;

public class RAnsariArrangeNames
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        String names[] = new String[20];
        System.out.println("Enter 20 names:");
        for (int i = 0;  i < names.length; i++) {
            names[i] = in.nextLine();
        }

        //Bubble Sort
        for (int i = 0; i < names.length - 1; i++) {
            for (int j = 0; j < names.length - 1 - i; j++) {
                if (names[j].compareToIgnoreCase(names[j + 1]) < 0) {
                    String temp = names[j + 1];
                    names[j + 1] = names[j];
                    names[j] = temp;
                }
            }
        }
        
        System.out.println("\nSorted Names");
        for (int i = 0;  i < names.length; i++) {
            System.out.println(names[i]);
        }
    }
}

How to learn from this program

First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.

Practice suggestion

After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.