import java.util.*;
import java.util.Scanner;

public class stackAttempt {

  Scanner sc = new Scanner(System.in);
  int stackSize = 6;
  int[] theStack = new int[stackSize];
  int topStack = 0;
  int pushNo = 0;
  boolean completed = false;
  String response = "";


  String ask() {
    System.out.println("Would you like to push, pop, or finish?");
    this.response = sc.nextLine();
    return this.response;
    // if (this.response.equals("push")) {
    //   System.out.println("What value would you like to push?");
    //   this.pushNo = sc.nextInt();
    //   this.push(pushNo);
    // }
    // else if (this.response.equals("pop")) {
    //   this.pop();
    // }
    // else if (this.response.equals("finish")) {
    //   this.completed = true;
    // }
    // // else {
    // //
    // // }
    // else {
    //   System.out.println("That didn't make sense mate. I'm gonna show you your stack and we'll try again, yeah?");
    // }
  }


  boolean completeCheck() {
    return this.completed;
  }


  void printStack() {
    System.out.println("The array is:");
    for (int i=0; i<this.topStack; i++) {
      System.out.printf("%s ", this.theStack[i]);
    }
    System.out.println();
  }


  int askPush() {
    System.out.println("What value would you like to push?");
    this.pushNo = sc.nextInt();
    return this.pushNo;
  }


  void push(int n) {
    if (this.topStack < this.stackSize) {
      this.theStack[topStack] = n;
      this.topStack++;
    }
    else {
      System.out.println("The stack is a bit too full at the moment. Thank you, come again");
    }
  }


  void pop(){
    if (this.topStack > 0) {
      this.theStack[topStack-1] = 0;
      this.topStack--;
      System.out.println("The height of the stack is " + this.topStack);
    }
    else {
      System.out.println("Sorry it seems there is nothing to pop off the stack. Thank you, come again");
    }
  }


  public static void main(String[] args) {
    stackAttempt test = new stackAttempt();
    System.out.println("The main is working");
    int pushNo = 0;
    // Scanner sc = new Scanner(System.in);
    boolean completed = false;

    do  {

      // System.out.println("The while loop is working");

      // test.ask();
      //
      String action = test.ask();

      // System.out.println("The action requested is: " + action);
      //
      if (action.equals("push")) {
        // System.out.println("What value would you like to push?");
        pushNo = test.askPush();
        test.push(pushNo);
      }
      // else if (action.equals("pop")) {
      //   test.pop();
      // }
      else if (action.equals("finish")) {
        completed = true;
      }

      // completed = test.completeCheck();


      test.printStack();
      // completed = true;


    } while (completed == false);

  }

}