public class Todo {

  // main method: test our todo class

  public static void main(String a[]) {
 
      Todo t = new Todo();
     
      // []
      t.push("prepare English exam");
      // ["prepare"]
      t.push("try to do Programming exercises");
      // ["prepare", "try"]
      t.push("call my brother");
      // ["prepare", "try","call"]
      System.out.println(t.pop());
      // ["try","call"]
      t.pop();
      // ["call"]
      System.out.println(t.getCount());
      // ["call"]
      t.push("sleep");
      // ["call", "sleep"]
      System.out.println(t.pop());
      // ["sleep"]

  }

  // attributes

  private String[] item;
  private int count;


  // methods

  public Todo(){
      item = new String[100];
      count = 0;
  }

  public void push(String j) {
      item[count] = j;
      count++;
  }


  public String pop() {
       String tmp = item[0];

       // shift each element down by one position
       int k;
       for (k = 0; k <= count-1; k++){
	   item[k] = item [k+1];
       }  
       count--;
       return tmp;  
  }

  public int getCount() {
      return count;
  }


}