php实现单链表，php实现单链_PHP教程

php实现单链表，php实现单链

<?<span>php
</span><span>/*</span><span>*
  * 单链表
  </span><span>*/</span> 
<span>class</span><span> Demo
{
    </span><span>private</span> <span>$id</span><span>;
    </span><span>public</span> <span>$name</span><span>;
    </span><span>public</span> <span>$next</span><span>;

    </span><span>public</span> <span>function</span> __construct (<span>$id</span> = '', <span>$name</span> = ''<span>)
    {
        </span><span>$this</span>->id = <span>$id</span><span>;
        </span><span>$this</span>->name = <span>$name</span><span>;
    }

    </span><span>static</span> <span>public</span> <span>function</span> show (<span>$head</span><span>)
    {
        </span><span>$cur</span> = <span>$head</span><span>;
        </span><span>while</span> (<span>$cur</span>-><span>next</span><span>) {
            </span><span>echo</span> <span>$cur</span>-><span>next</span>->id,'###',<span>$cur</span>-><span>next</span>->name,'<br />'<span>;
            </span><span>$cur</span> = <span>$cur</span>-><span>next</span><span>;
        }
        </span><span>echo</span> '<hr />'<span>;
    }

    </span><span>//</span><span>尾插法</span>
    <span>static</span> <span>public</span> <span>function</span> push (<span>$head</span>, <span>$node</span><span>)
    {
        </span><span>$cur</span> = <span>$head</span><span>;
        </span><span>while</span> (<span>NULL</span> != <span>$cur</span>-><span>next</span><span>) {
            </span><span>$cur</span> = <span>$cur</span>-><span>next</span><span>;
        }
        </span><span>$cur</span>-><span>next</span>  = <span>$node</span><span>;
        </span><span>return</span> <span>$head</span><span>;
    }

    </span><span>static</span> <span>public</span> <span>function</span> insert(<span>$head</span>, <span>$node</span><span>)
    {
        </span><span>$cur</span> = <span>$head</span><span>;
        </span><span>while</span> (<span>NULL</span> != <span>$cur</span>-><span>next</span><span>) {
            </span><span>if</span> (<span>$cur</span>-><span>next</span>->id > <span>$node</span>-><span>id) {
                </span><span>break</span><span>;
            }
            </span><span>$cur</span> = <span>$cur</span>-><span>next</span><span>;
        }
        </span><span>$node</span>-><span>next</span> = <span>$cur</span>-><span>next</span><span>;
        </span><span>$cur</span>-><span>next</span>  = <span>$node</span><span>;
        </span><span>return</span> <span>$head</span><span>;
    }

    </span><span>static</span> <span>public</span> <span>function</span> edit(<span>$head</span>, <span>$node</span><span>)
    {
        </span><span>$cur</span> = <span>$head</span><span>;
        </span><span>while</span> (<span>NULL</span> != <span>$cur</span>-><span>next</span><span>) {
            </span><span>if</span> (<span>$cur</span>-><span>next</span>->id == <span>$node</span>-><span>id) {
                </span><span>break</span><span>;
            }
            </span><span>$cur</span> = <span>$cur</span>-><span>next</span><span>;
        }
        </span><span>$cur</span>-><span>next</span>->name = <span>$node</span>-><span>name;
        </span><span>return</span> <span>$head</span><span>;        
    }

    </span><span>static</span> <span>public</span> <span>function</span> pop (<span>$head</span>, <span>$node</span><span>)
    {
        </span><span>$cur</span> = <span>$head</span><span>;
        </span><span>while</span> (<span>NULL</span> != <span>$cur</span>-><span>next</span><span>) {
            </span><span>if</span> (<span>$cur</span>-><span>next</span> == <span>$node</span><span>) {
                </span><span>break</span><span>;
            }
            </span><span>$cur</span> = <span>$cur</span>-><span>next</span><span>;
        }
        </span><span>$cur</span>-><span>next</span> = <span>$node</span>-><span>next</span><span>;
        </span><span>return</span> <span>$head</span><span>;            
    }
}

</span><span>$team</span> = <span>new</span><span> Demo();
</span><span>$node1</span> = <span>new</span> Demo(1, '唐三藏'<span>);
Demo</span>::push(<span>$team</span>, <span>$node1</span><span>);
</span><span>$node1</span>->name = '唐僧'<span>;
Demo</span>::show(<span>$team</span><span>);

</span><span>//</span><span> Demo::show($team);</span>
<span>$node2</span> = <span>new</span> Demo(2, '孙悟空'<span>);
Demo</span>::insert(<span>$team</span>, <span>$node2</span><span>);
</span><span>//</span><span> Demo::show($team);</span>
<span>$node3</span> = <span>new</span> Demo(5, '白龙马'<span>);
Demo</span>::push(<span>$team</span>, <span>$node3</span><span>);
</span><span>//</span><span> Demo::show($team);</span>
<span>$node4</span> = <span>new</span> Demo(3, '猪八戒'<span>);
Demo</span>::insert(<span>$team</span>, <span>$node4</span><span>);
</span><span>//</span><span> Demo::show($team);</span>
<span>$node5</span> = <span>new</span> Demo(4, '沙和尚'<span>);
Demo</span>::insert(<span>$team</span>, <span>$node5</span><span>);
</span><span>//</span><span> Demo::show($team);</span>
<span>$node4</span>->name = '猪悟能';<span>//</span><span>php对象传引用，所以Demo::edit没有必要
// unset($node4);
// $node4 = new Demo(3, '猪悟能');
// Demo::edit($team, $node4);</span>
Demo::pop(<span>$team</span>, <span>$node1</span><span>);

Demo</span>::show(<span>$team</span>);

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