Question

Using Pseudocode: Design a program that allows the user to enter 20 names into a String array. Sort the array in ascending (alphabetical) order and display its contents.

Answer 1

import java.util.Scanner;

public class SortStrings {
   public static void main(String[] args) {
       String arr[] = new String[20];
       Scanner sc = new Scanner(System.in);
       // reading names
       System.out.println("Enter 20 words");
       for (int i = 0; i < arr.length; i++)
           arr[i] = sc.next();
       // calling sort function
       sort(arr);
       // printing names
       for (int i = 0; i < arr.length; i++)
           System.out.print(arr[i] + " ");
   }

   public static void sort(String arr[]) {
       int i, j;
       String temp;
       int n = arr.length;
       // outer loop to travel through the all elements
       for (i = 0; i < n - 1; i++) {
           // inner loop to compare the outer loop elements
           for (j = 0; j < n - i - 1; j++)
               // if element at j< than j+1 than swap both
               if (arr[j].compareTo(arr[j + 1]) > 0) {
                   // swap logic
                   temp = arr[j];
                   arr[j] = arr[j + 1];
                   arr[j + 1] = temp;
               }
       }

   }
}

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