為什么80%的碼農(nóng)都做不了架構師？>>> ??

<?php echo?"<meta?http-equiv='Content-Type'?content='text/html;charset=utf-8'>"; error_reporting(?E_ALL&~E_NOTICE?); define("Inf",0x7fffffff); define("MaxV",10000); define("MaxE",10000); class?Edge {var?$to,$nex,$w;function?__construct($to,$nex,$w){$this->to=$to;$this->nex=$nex;$this->w=$w;}? } class?A {public?$N,$M;public?$edge?=?array();public?$size;public?$head?=?array();public?$dist?=?array();public?$cot?=?array();public?$vst?=?array();public?$path?=?array();function?InsertEdge($from,$to,$w){$this->edge[$this->size]?=?new?Edge($to,$this->head[$from],$w);$this->head[$from]?=?$this->size++;?}function?spfa($s){$from;$to;$que?=?new?queue(30);for($i=0;$i<=$this->N;$i++){$this->path[$i]=$i;$this->dist[$i]=Inf;}$this->path[$s]=0;$this->dist[$s]=0;$que->InQ($s);$this->vst[$s]=1;while($que->QIsFull()!=0){$from=$que->getFrontDate();//$que.pop();//array_shift($que);$que->OutQ();$vst[$from]=0;$cot[$from]++;if($this->cot[$from]>=$this->N)return?0;for($i=$this->head[$from];$i+1;$i=$this->edge[i]->next)//當head=-1的時候，停止，證明其沒有{$to=$this->edge[$i].to;if($this->dist[$to]>$this->dist[$from]+$this->edge[$i]->w){$this->dist[$to]?=?$this->dist[$from]?+?$this->edge[$i]->w;if(!$this->vst[$to])$this->$que->InQ($to);$this->vst[$to]=1;}}}for($i=1;$i<=$N;$i++)echo?"dist".$this->i."??=??".$this->dist[i]."<br>";return?1;}function?init(){$from;$to;$w;$this->size=0;//memset(head,-1,sizeof(head));for($i=0;$i<count($this->head);$i++)$this->head[i]?=?-1;}function?main(){$this->init();$this->M?=?3;$this->N?=?3;$from?=?1;$w?=?3?;$to?=?2;$this->InsertEdge($from,$to,$w);$from?=?2;$w?=?1?;$to?=?3;$this->InsertEdge($from,$to,$w);$from?=?3;$w?=?3?;$to?=?2;$this->InsertEdge($from,$to,$w);if(!$this->spfa(1))echo?"存在負環(huán)回路";else?echo?"存在最短路徑";return?0;} }class?queue{??protected?$front;//隊頭??protected?$rear;//隊尾??protected?$queue=array('0'=>'隊尾');//存儲隊列??protected?$maxsize;//最大數(shù)??public?function?__construct($size){??$this->initQ($size);??}??//初始化隊列??private?function?initQ($size){??$this->front=0;??$this->rear=0;??$this->maxsize=$size;??}??//判斷隊空??public?function?QIsEmpty(){??return?$this->front==$this->rear;??}??//判斷隊滿??public?function?QIsFull(){??return?($this->front-$this->rear)==$this->maxsize;??}??//獲取隊首數(shù)據(jù)??public?function?getFrontDate(){??return?$this->queue[$this->front]->getData();??}??//入隊??public?function?InQ($data){??if($this->QIsFull())echo?$data.":滿了！（隊滿不能入隊，請等待！）<br>";??else?{??$this->front++;??for($i=$this->front;$i>$this->rear;$i--){??//echo?$data;??if($this->queue[$i])unset($this->queue[$i]);??$this->queue[$i]=$this->queue[$i-1];??}??$this->queue[$this->rear+1]=new?data($data);?}??}??//出隊??public?function?OutQ(){??if($this->QIsEmpty())echo?"隊空不能出隊！<br>";??else{??unset($this->queue[$this->front]);??$this->front--;}} } class?data?{??//數(shù)據(jù)??private?$data;??public?function?__construct($data){??$this->data=$data;??}??public?function?getData(){??return?$this->data;??}??public?function?__destruct(){?}?? }?? ?> <?php$a?=?new?A();$a->main(); ?>

轉(zhuǎn)載于:https://my.oschina.net/MrHou/blog/147911

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