sorting

package sorting;
import java.util.Scanner;
public class Sorting {
    public static void main(String[] args) {
        int[] nomor=new int[1024];
        int menu=0,z=0,view,temp;
        Scanner in=new Scanner(System.in);
        while(menu!=4){
                System.out.print("1.Input\n2.view\n3.Sort\n4.Exit\n : ");
                menu=in.nextInt();
                if(menu==1){
                    z++;
                    System.out.print("Masukkan Nomor : ");
                    nomor[z]=in.nextInt();
                }
                else if(menu==2){
                    if(z<1) System.out.println("Kosong");
                    else{
                        System.out.print("Data Sebelum Diurutkan : ");
                        for(int a=1;a<=z;a++) System.out.print(nomor[a]+" ");
                        System.out.println("");
                    }
                }
                else if(menu==3){
                    if(z<1) System.out.println("Kosong");
                    else{
                        for(int c=1;c<=z;c++) System.out.print(nomor[c]+" ");
                        System.out.println("");
                        for(int a=2; a<=z; a++){
                            int b=a;
                            while(b>1 && nomor[b-1]>nomor[b]){
                                temp=nomor[b];
                                nomor[b]=nomor[b-1];
                                nomor[b-1]=temp;
                                b--;
                                for(int c=1;c<=z;c++){
                                    System.out.print(nomor[c]+" ");
                                    if(c==a) System.out.print("| ");
                                }
                                System.out.println("");
                            }
                        }
                        System.out.print("Data Setelah Diurutkan : ");
                        for(int a=1;a<=z;a++) System.out.print(nomor[a]+" ");
                        System.out.println("");
                    }
                }
                else if(menu==4) System.out.println("Keluar");
                else System.out.println("Salah");
                System.out.println("");
        }
    }
}