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php實(shí)現(xiàn)單鏈表的實(shí)例代碼

復(fù)制代碼 代碼如下:
<?php

//鏈表節(jié)點(diǎn)
class node {
    public $id; //節(jié)點(diǎn)id
    public $name; //節(jié)點(diǎn)名稱
    public $next; //下一節(jié)點(diǎn)
   

    public function __construct($id, $name) {
        $this->id = $id;
        $this->name = $name;
        $this->next = null;
    }
}

//單鏈表
class singelLinkList {
    private $header; //鏈表頭節(jié)點(diǎn)
   

    //構(gòu)造方法
    public function __construct($id = null, $name = null) {
        $this->header = new node ( $id, $name, null );
    }

    //獲取鏈表長(zhǎng)度
    public function getLinkLength() {
        $i = 0;
        $current = $this->header;
        while ( $current->next != null ) {
            $i ++;
            $current = $current->next;
        }
        return $i;
    }

    //添加節(jié)點(diǎn)數(shù)據(jù)
    public function addLink($node) {
        $current = $this->header;
        while ( $current->next != null ) {
            if ($current->next->id > $node->id) {
                break;
            }
            $current = $current->next;
        }
        $node->next = $current->next;
        $current->next = $node;
    }

    //刪除鏈表節(jié)點(diǎn)
    public function delLink($id) {
        $current = $this->header;
        $flag = false;
        while ( $current->next != null ) {
            if ($current->next->id == $id) {
                $flag = true;
                break;
            }
            $current = $current->next;
        }
        if ($flag) {
            $current->next = $current->next->next;
        } else {
            echo "未找到id=" . $id . "的節(jié)點(diǎn)!<br>";
        }
    }

    //獲取鏈表
    public function getLinkList() {
        $current = $this->header;
        if ($current->next == null) {
            echo ("鏈表為空!");
            return;
        }
        while ( $current->next != null ) {
            echo 'id:' . $current->next->id . '   name:' . $current->next->name . "<br>";
            if ($current->next->next == null) {
                break;
            }
            $current = $current->next;
        }
    }

    //獲取節(jié)點(diǎn)名字
    public function getLinkNameById($id) {
        $current = $this->header;
        if ($current->next == null) {
            echo "鏈表為空!";
            return;
        }
        while ( $current->next != null ) {
            if ($current->id == $id) {
                break;
            }
            $current = $current->next;
        }
        return $current->name;
    }

    //更新節(jié)點(diǎn)名稱
    public function updateLink($id, $name) {
        $current = $this->header;
        if ($current->next == null) {
            echo "鏈表為空!";
            return;
        }
        while ( $current->next != null ) {
            if ($current->id == $id) {
                break;
            }
            $current = $current->next;
        }
        return $current->name = $name;
    }
}

$lists = new singelLinkList ();
$lists->addLink ( new node ( 5, 'eeeeee' ) );
$lists->addLink ( new node ( 1, 'aaaaaa' ) );
$lists->addLink ( new node ( 6, 'ffffff' ) );
$lists->addLink ( new node ( 4, 'dddddd' ) );
$lists->addLink ( new node ( 3, 'cccccc' ) );
$lists->addLink ( new node ( 2, 'bbbbbb' ) );
$lists->getLinkList ();
echo "<br>-----------刪除節(jié)點(diǎn)--------------<br>";
$lists->delLink ( 5 );
$lists->getLinkList ();

echo "<br>-----------更新節(jié)點(diǎn)名稱--------------<br>";
$lists->updateLink ( 3, "222222" );
$lists->getLinkList ();

echo "<br>-----------獲取節(jié)點(diǎn)名稱--------------<br>";
echo $lists->getLinkNameById ( 5 );

echo "<br>-----------獲取鏈表長(zhǎng)度--------------<br>";
echo $lists->getLinkLength ();
?>

php技術(shù)php實(shí)現(xiàn)單鏈表的實(shí)例代碼,轉(zhuǎn)載需保留來源!

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