dnode-dnode.html
来自「经典的数据结构源代码（java 实现）」· HTML 代码 · 共 36 行
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<html><head><title>Code Fragment</title></head><body text=#000000><center></center><br><br><dl><dd><pre><font color=#8000a0>public</font> <font color=#8000a0><font color=#ff8000>class</font> </font>DNode<E> <font color=#8000a0><font color=#ff8000>implements</font> </font>Position<E> { <font color=#8000a0><font color=#8000a0>private</font> </font>DNode<E> prev, next; <font color=#ff0080>// References to the nodes before and after</font> <font color=#8000a0><font color=#8000a0>private</font> </font>E element; <font color=#ff0080>// Element stored in this position</font> <font color = #ff0080>/** Constructor */</font> <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#0000ff>DNode</font>(DNode<E> newPrev, DNode<E> newNext, <font color=#8000a0>E </font>elem) { prev = newPrev; next = newNext; element = elem; } <font color=#ff0080>// Method from interface Position</font> <font color=#8000a0><font color=#8000a0>public</font> </font>E <font color=#0000ff>element</font>() <font color=#8000a0><font color=#ff8000>throws</font> </font>InvalidPositionException { <font color=#ff8000>if</font><font color=#0000ff> </font>(<font color=#0000ff></font>(prev == null) &&<font color=#0000ff> </font>(next == null)) <font color=#8000a0><font color=#ff8000>throw</font> </font><font color=#ff8000>new</font> <font color=#0000ff>InvalidPositionException</font>(<font color=#008000>"Position is not in a list!"</font>); <font color=#8000a0><font color=#ff8000>return</font> </font>element; } <font color=#ff0080>// Accessor methods</font> <font color=#8000a0><font color=#8000a0>public</font> </font>DNode<E> <font color=#0000ff>getNext</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>next; } <font color=#8000a0><font color=#8000a0>public</font> </font>DNode<E> <font color=#0000ff>getPrev</font>() { <font color=#8000a0><font color=#ff8000>return</font> </font>prev; } <font color=#ff0080>// Update methods</font> <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>void</font> <font color=#0000ff>setNext</font>(DNode<E> newNext) { next = newNext; } <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>void</font> <font color=#0000ff>setPrev</font>(DNode<E> newPrev) { prev = newPrev; } <font color=#8000a0><font color=#8000a0>public</font> </font><font color=#8000a0>void</font> <font color=#0000ff>setElement</font>(E newElement) { element = newElement; }}</dl></body></html>⌨️ 快捷键说明
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