logo Practice-It logo


Related Links:
Author: Stuart Reges (on 2014/02/13)

Write a method removeFront that takes an integer n as a parameter and that removes the first n values from a list of integers. For example, if a variable called list stores this sequence of values:

    [8, 17, 9, 24, 42, 3, 8]

and the following call is made:


then it should store the following values after the call:

    [42, 3, 8]

Notice that the first four values in the list have been removed and the other values appear in the same order as in the original list.

You are writing a method for the ArrayIntList class discussed in lecture (handout 3):

    public class ArrayIntList {
        private int[] elementData; // list of integers
        private int size;          // current # of elements in the list


You are not to call any other ArrayIntList methods to solve this problem. Your method should throw an IllegalArgumentException if the parameter n is less than 0 or greater than the number of elements in the list. Your solution must run in O(n) time.

Write your solution to removeFront below.

Type your solution here:

This is a partial class problem. Submit code that will become part of an existing Java class as described. You do not need to write the complete class, just the portion described in the problem.

You must log in before you can solve this problem.

Log In

If you do not understand how to solve a problem or why your solution doesn't work, please contact your TA or instructor.
If something seems wrong with the site (errors, slow performance, incorrect problems/tests, etc.), please

Is there a problem? Contact a site administrator.