Question

Please help me with this Java project. I'm trying to create a loop so if user enter value > 12, will prompt them a message and take them back to "How many elements do you wan to enter?". Thanks

public static void main(String[] args) {
       Scanner sc = new Scanner(System.in);
      
   int i, j;
  
   System.out.print("\n How meny elements do you want to enter? (N should be no more than 12) ");
   int num = sc.nextInt();
     
   if (num > 12) {
       System.out.print("N should be no more than 12");
       return ;
   }
   else {

   int[] arrayElements = new int[num];
  
   System.out.println("\n Enter array elements: ");
  
   for (i = 0; i < num; i++)
   {
   do
   {
   arrayElements[i] = sc.nextInt();
   }while(arrayElements[i] < 1 || arrayElements[i] > num);
   }
  
   System.out.println("\n\n Array Elements: \n");
   for(i=0; i<num; i++)
   {
   System.out.print(" \t " + arrayElements[i]);
   }
  
   int temp;
  
   for(i=0; i<num; i++)
   {
   for(j=i+1; j<num; j++)
   {
   if(arrayElements[i] > arrayElements[j])
   {
   temp = arrayElements[i];
   arrayElements[i] = arrayElements[j];
   arrayElements[j] = temp;
   }
   }
   }
  
   boolean duplicate;
   int count;
  
   System.out.println("\n\n");
  
   for (i = 0; i < num;)
   {
   duplicate = false;
   count = 1;
  
   for (j = i+1; j < num; j++)
   {
   if(arrayElements[j] != arrayElements[i])
   break;
  
   if (arrayElements[i] == arrayElements[j] && j!=i)
   {
   count ++;
   duplicate = true;
   }
   }
  
   if(duplicate)
   {
   i = i+count-1;
   System.out.println("\n Element: " + arrayElements[i] + " \t " +"Count: "+ count + " times. \n");
   }
   else
   i = i+1;
   }
   }
   }

}

Answer 1

import java.util.Scanner;
public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);

    int i, j;

    System.out.print("\n How many elements do you want to enter? (N should be no more than 12) ");
    int num = sc.nextInt();

    while (num > 12) {
      System.out.print("N should be no more than 12");
      System.out.print("\n How many elements do you want to enter? (N should be no more than 12) ");
      num = sc.nextInt();
    }

    int[] arrayElements = new int[num];

    System.out.println("\n Enter array elements: ");

    for (i = 0; i < num; i++)
    {
      do
      {
        arrayElements[i] = sc.nextInt();
      }while(arrayElements[i] < 1 || arrayElements[i] > num);
    }

    System.out.println("\n\n Array Elements: \n");
    for(i=0; i<num; i++)
    {
      System.out.print(" \t " + arrayElements[i]);
    }

    int temp;

    for(i=0; i<num; i++)
    {
      for(j=i+1; j<num; j++)
      {
        if(arrayElements[i] > arrayElements[j])
        {
          temp = arrayElements[i];
          arrayElements[i] = arrayElements[j];
          arrayElements[j] = temp;
        }
      }
    }

    boolean duplicate;
    int count;

    System.out.println("\n\n");

    for (i = 0; i < num;)
    {
      duplicate = false;
      count = 1;

      for (j = i+1; j < num; j++)
      {
        if(arrayElements[j] != arrayElements[i])
          break;

        if (arrayElements[i] == arrayElements[j] && j!=i)
        {
          count ++;
          duplicate = true;
        }
      }

      if(duplicate)
      {
        i = i+count-1;
        System.out.println("\n Element: " + arrayElements[i] + " \t " +"Count: "+ count + " times. \n");
      }
      else
        i = i+1;
    }

  }

}