uni/inf1010/hw2/Hylle.java

class Hylle<T> implements GenHylle<T> {
	private int storrelse;
	private T[] arr;

	Hylle(int storrelse) {
		this.storrelse = storrelse;
		this.arr = (T[])(new Object[storrelse]);
	}

	public int hentStorrelse() {
		return storrelse;
	}

	public void settInn(int plass, T ting) throws Exception {
		if (arr[plass] == null)
			arr[plass] = ting;
		else
			throw new Exception("Plass "+plass+" er ikke ledig.");
	}

	public boolean erLedig(int plass) throws Exception {
		return arr[plass] == null;
	}

	public T hent(int plass) {
		T ting = arr[plass];
		arr[plass] = null;
		return ting;
	}
}