/**
 *This code makes random groups of classmates.
 *
 * @Molly Limaye
 * @09/24/19
 */

import java.util.*;

public class RandomGroups {

    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);

        int run = 1;

        while (run==1){
            //making class array
            String[] csclass = {"Arjun", "Robert", "Petey", "Maya", "Nikhil", "Shane","Molly", "Neera", "Jackson", "Chris", "Michael"};
            //user input
            System.out.println("How many people should be in each group?");
            int groupsize = sc.nextInt();

            //variables
            int groups = (int) (csclass.length/groupsize);
            int remainder = csclass.length%groupsize;
            int groupnum = 1;
            int index=0;
            String member = "";

            //choosing group members
            for( int i = 0; i <groups;i++){
                System.out.print("\nGroup " + groupnum + ": ");
                //remainder check
                if(remainder>0){
                    index = randomNum(0,10);
                    while(csclass[index].equals("null")){
                        index = randomNum(0,10);
                    }
                    member = csclass[index];
                    csclass[index]="null";
                    System.out.print(member + " ");
                    remainder --;
                }
                //assigning groups
                for(int a = 0; a < groupsize;a++){
                    index = randomNum(0,10);
                    while(csclass[index].equals("null")){
                        index = randomNum(0,10);
                    }
                    member = csclass[index];
                    csclass[index]="null";
                    System.out.print(member + " ");
                }
                groupnum++;
            }

            //play again feature
            System.out.println("\nWould you like to assign new groups? (yes/no)");
            String answer = sc.next();
            if (answer.equalsIgnoreCase("yes")){
                run = 1;
            }
            else{
                run = 0;
                System.out.println("End");
            }
        }
    }

    public static int randomNum(int min, int max) {
        int randomNum = (int) (Math.random() * ((max-min) + 1) + min);
        return randomNum;

    }
}