• new、delete、以及queue类


    本来以为很容易的,结果还是写了我两个小时。
    用指针模拟queue类,再加上类,各种错误,总算是解决掉了--
    #include<iostream>
    #include<cstdlib>
    #include<string>
    using namespace std;
    class Item
    {
    private:
        int time;
        int cost;
    public:
        Item():time(0),cost(0){}
        Item(int k):time(k)
        {
            cost=rand()%3;
        }
        Item (const Item &st)
        {
            time=st.time;
            cost=st.cost;
        }
        Item &operator=(const Item &st)
        {
            time=st.time;
            cost=st.cost;
            return *this;
        }
        int dealt()
        {
            return time;
        }
        int dealc()
        {
            //cout<<"------"<<cost<<endl;
            return cost;
    
        }
        friend ostream &operator<<(ostream &os,Item &st)
        {
            os<<st.time<<endl<<st.cost;
            return os;
        }
    };
    struct ss
    {
        Item num;
        struct ss *next;
    };
    class Queue
    {
    private:
        struct ss *beg,*end;
        int cnt;
        int tolt;
        int size;
        int xx;
    public:
        Queue():beg(NULL),end(NULL),cnt(0),tolt(0),size(10),xx(0){};
        Queue(const Queue &st)
        {
            cnt=st.cnt;
            tolt=st.tolt;
            size=st.size;
            while(beg!=NULL)
            {
                ss *p=beg->next;
                delete beg;
                beg=p;
            }
            end=NULL;
            ss *p=st.beg;
            beg=new ss;
            beg->next=NULL;
            beg->num=p->num;
            end=beg;
            while(p->next!=NULL)
            {
                p=p->next;
                ss *p1=new ss;
                p1->num=p->num;
                p1->next=NULL;
                end->next=p1;
                end=p1;
            }
            //return *this;
        }
        Queue &operator=(const Queue &st)
        {
            cnt=st.cnt;
            tolt=st.tolt;
            size=st.size;
            while(beg!=NULL)
            {
                ss *p=beg->next;
                delete beg;
                beg=p;
            }
            end=NULL;
            ss *p=st.beg;
            beg=new ss;
            beg->next=NULL;
            beg->num=p->num;
            end=beg;
            while(p->next!=NULL)
            {
                p=p->next;
                ss *p1=new ss;
                p1->num=p->num;
                p1->next=NULL;
                end->next=p1;
                end=p1;
            }
            return *this;
        }
        bool empty()
        {
            if(cnt==0) return true;
            else return false;
        }
        bool full()
        {
            if(cnt==size) return true;
            return false;
        }
        bool push(Item &st)
        {
            if(full()) return false;
            cnt++;
            if(beg==NULL)
            {
                ss *p=new ss;
                p->num=st;
                p->next=NULL;
                beg=end=p;
            }
            else
            {
                ss *p=new ss;
                p->num=st;
                p->next=NULL;
                beg->next=p;
                end=p;
            }
            //cout<<beg->num<<endl;
            return true;
        }
        bool pop()
        {
            if(empty()) return false;
            cnt--;
            xx++;
            if(tolt<beg->num.dealt())
            {
                tolt=beg->num.dealt()+beg->num.dealc();
            }
            else
            {
                tolt+=beg->num.dealc();
            }
            ss *p=beg->next;
            delete beg;
            beg=p;
            return true;
        }
        int top(int w)
        {
            int tmp=beg->num.dealt()+beg->num.dealc();
            //cout<<"---"<<beg->num.dealt()<<"   "<<beg->num.dealc()<<endl;
            if(tmp<=w) pop();
        }
        void deal(int n)
        {
            tolt-=n;
        }
        ~Queue()
        {
            while(beg!=NULL)
            {
                ss *p=beg->next;
                delete beg;
                beg=p;
            }
        }
        friend ostream &operator<<(ostream &os,const Queue &st)
        {
            os<<"处理花费的总时间(分钟):"<<st.tolt<<endl<<"处理了多少人:"<<st.xx<<endl;
            os<<"队列里面还有多少人:"<<st.cnt<<endl;
            return os;
        }
    };
    int main()
    {
        Queue q;
        //int sum=1235;
        int n,m;
        cout<<"请输入n,m:";
        cin>>n>>m;
        if(n>m)
        {
            int tmp=n;
            n=m;
            m=n;
        }
        for(int i=n;i<=m;i++)
        {
            Item p(i);
            q.push(p);
            if(!q.empty())
            {
                q.top(i);
            }
        }
        q.deal(n);
        cout<<q;
        return 0;
    }
    

      

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  • 原文地址:https://www.cnblogs.com/ziyi--caolu/p/4065000.html
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