simplelistwithiterator3.java

来自「国外的数据结构与算法分析用书」· Java 代码 · 共 40 行

import dslib.list.*;

public class SimpleListWithIterator3 extends LinkedSimpleListUos
{
	public Iterator iterator()
	{
		/*	Anonymous class body */
		return new Iterator()
		{
			protected LinkedNodeUos cur;
			

			/*	Instance initializer */
			{
				cur = firstNode;
			}

			public void goFirst()
			{
				cur = firstNode;
			}

			public void goForth()
			{
				cur = cur.nextNode();
			}

			public boolean itemExists()
			{
				return cur != null;
			}

			public Object item()
			{
				return cur.item();
			}
		};
	}
}