Workshop

import java.util.Arrays;

public class LagerProgramm {
   public static void main(String[] args) {
      //This stuff will come out of the excel file afterwards
      Object[][] int_workshops = {
            { "Springen", 4, 8 },   // min=4, max=8
            { "Tanzen", 2, 10},
            { "Lesen", 2, 10},
            { "Klettern", 5, 10},
            { "Fussball", 2, 10},
            { "Theater", 2, 10},
            { "Schwingen", 2, 10}
      };

      //This stuff will come out of the excel file afterwards, part=participant
      int[][] int_teilnehmer = {
  /* part1 */ { 0,1,2}, //prio1=worshop[0]="Springen", prio2="Tanzen", prio3="Lesen"
  /* part2 */ { 0,1,2},
            { 5,1,2}, //prio1="Theater", ...
            { 0,1,2},
            { 5,4,2},
            { 4,6,2},
            { 3,1,2},
            { 2,1,3},
            { 5,1,6},
            { 1,2,5},
            { 2,3,4},
            { 2,6,3},
            { 4,1,2},
            { 3,1,4},
      };

      //make an Array of Workshops
      Workshop[] workshops = new Workshop[ int_workshops.length ];
      for(int i=0; i<workshops.length; i++){
         workshops[i] = new Workshop(i, (String)(int_workshops[i][0]),(int)(int_workshops[i][1]),(int)(int_workshops[i][2]) );
      }


      //make Array of pariticipants, teilnehmer=participant german/english nothing related to the programm
      Teilnehmer[] teilnehmer = new Teilnehmer[int_teilnehmer.length];
      for(int i=0; i<int_teilnehmer.length; i++){
         teilnehmer[i] = new Teilnehmer(i, int_teilnehmer[i]);
      }


      System.out.println(Arrays.toString(workshops));
      System.out.println(Arrays.toString(teilnehmer));

      //testing if value of participants is enough to fill all workshops, if not fill the ones with the smallest min value with
      //the participants wich chose the same workshop twice or didnt chose at all or wrote a funny name on the paper for registration



      System.out.println("Programmende");
   }
}

class Teilnehmer{
   int tnr;
   int[] favs; //favorits

   public Teilnehmer(int tnr, int[] favs){
      this.tnr=tnr;
      for(int i=0; i<favs.length; i++)
         for(int j=i+1; j<favs.length; j++)
          if( favs[i]==favs[j] )
             throw new IllegalArgumentException("Duplikate bei Favoriten: TN="+this.tnr+ " favs="+Arrays.toString(favs));
      this.favs = new int[favs.length];
      for (int i = 0; i < favs.length; i++) {
         this.favs[i] = favs[i];
      }
   }

   public String toString(){
      return "TN: " + tnr + " Favoriten: " + Arrays.toString( favs );
   }
}

class Workshop{
   int wnr;
   String name;
   int min;
   int max;
   public Workshop(int wnr, String name, int min, int max){
      this.wnr=wnr;
      this.name= (name==null||name.length()==0)?("WS"+wnr):name;
      if(min>max)
         throw new IllegalArgumentException("Workshop Nr=" + wnr + " min="+min+" max="+max);
      this.min=min;
      this.max=max;
   }
   public String toString(){
      return name + "(" + min + "-" + max + ")";
   }
}