18.11.2014 Views

public class RecentlyUsedList - Jfokus

public class RecentlyUsedList - Jfokus

public class RecentlyUsedList - Jfokus

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<strong>public</strong> <strong>class</strong> <strong>RecentlyUsedList</strong><br />

{<br />

<strong>public</strong> void add(String newItem)<br />

{<br />

if(list == null)<br />

list = new ArrayList();<br />

else<br />

list.remove(newItem);<br />

list.add(newItem);<br />

}<br />

<strong>public</strong> int size()<br />

{<br />

return list == null ? 0 : list.size();<br />

}<br />

<strong>public</strong> String get(int index)<br />

{<br />

if(list == null)<br />

throw new IndexOutOfBoundsException();<br />

return list.get(size() – index - 1);<br />

}<br />

private List list;<br />

}<br />

Accidental<br />

complexity from<br />

unnecessary<br />

laziness

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