箱子排序（測試代碼Qt5.1 for mac）

---

binSort.cpp

/*
 * 這裏是主函數的執行文件    
 * binSort.cpp    
*/
#include<iostream>
#include"studentrecord1.h"
#include"chainwithiterator.h"
#include"myexceptions.h"

void binSort(chain<studentRecord>& theChain,int range)
{
    chain<studentRecord> *bin;
    bin = new chain<studentRecord> [range+1];

    int numberOfElements = theChain.size();
    for(int i = 1;i <= numberOfElements;i++)
    {
        studentRecord x = theChain.get(0);
        theChain.erase(0);

        //在排序後的鏈表插入新元素，且在鏈表頭插入
        bin[x.score].insert(0,x);
    }

    //從bin中收集元素，在存儲到theChain鏈表中
    for(int j = range;j>=0;j--)
    {
        while(!bin[j].empty())
        {
            studentRecord x = bin[j].get(0);
            bin[j].erase(0);
            theChain.insert(0,x);
        }
    }
    delete [] bin;
}

int main(int argc, char *argv[])
{
    studentRecord s;
    chain<studentRecord> c;
     for(int i = 1;i <= 20;i++)
     {
         s.score = i / 2;
         s.name = new string(s.score,'a');
         c.insert(0,s);
     }
     cout<<"The unsorted chain is"<<endl;
     cout <<" "<< c <<endl;
     binSort(c,10);
     cout <<"The sorted chain is" <<endl;
     cout <<" "<< c <<endl;
    return 0;
}

chainNode.h

/*
 * 鏈表節點定義
 * chainNode.h
*/
#ifndef CHAINNODE_H
#define CHAINNODE_H

template<class T>
struct chainNode
{
    //數據成員
    T element;
    chainNode<T>* next;

    //函數
    chainNode(){}
    chainNode(const T& element)
    {
        this->element = element;
    }
    chainNode(const T& element,chainNode<T>* next)
    {
        this->element = element;
        this->next = next;
    }
};

#endif // CHAINNODE_H

chainWithIterator.h

/*
 *鏈表迭代器的定義
 * chainWithIterator.h
*/
#ifndef CHAINWITHITERATOR_H
#define CHAINWITHITERATOR_H

#include<iostream>
#include<sstream>
#include<string>
#include"linearlist.h"
#include"chainnode.h"
#include"myexceptions.h"

using namespace std;

class linkedDigraph;
template<class T> class linkedWDigraph;

template<class T>
class chain : public linearList<T>
{
    friend linkedDigraph;
    friend linkedWDigraph<int>;
    friend linkedWDigraph<float>;
    friend linkedWDigraph<double>;
public  :
    /*
     * 構造函數，複製構造函數，析構函數
    */
    chain(int initialCapaticy = 10);
    chain(const chain<T>&);
    ~chain();

    //抽象函數的具體聲明
    bool empty() const{return listSize == 0;}
    int size() const{return listSize;}
    T& get(int theIndex) const;
    int indexOf(const T &theElement) const;
    void insert(int theIndex,const T& theElement);
    void erase(int theIndex);
    void output(ostream& out) const;

   //迭代器的開始和結束
    class iterator;
    iterator begin() {return iterator(firstNode);}
    iterator end(){return iterator(NULL);}

    //對chain的迭代器
    class iterator
    {
    public:
        typedef forward_iterator_tag iterator_category;
        typedef T value_type;
        typedef ptrdiff_t difference_type;
        typedef T* pointer;
        typedef T& reference;

        //構造函數
        iterator(chainNode<T>* theNode = NULL)
        {
            node = theNode;
        }

        //
        T& operator*() const{return node->element;}
        T* operator->()const{return &node->element;}

        //對++的重載
        iterator& operator++()//前加
        {
            node = node->next;
            return *this;
        }
        iterator operator++(int)//後加
        {
            iterator old = *this;
            node = node->next;
            return old;
        }

        bool operator != (const iterator right) const
        {
            return node != right.node;
        }
        bool operator == (const iterator right) const
        {
            return node == right.node;
        }
    protected:
        chainNode<T>* node;
    };
protected:
    void checkIndex(int theIndex) const;
    chainNode<T>* firstNode;//指向鏈表彙總首節點
    int listSize;//元素數量
};

/*
 * 類中函數的具體實現
*/

//構造函數
template<class T>
chain<T>::chain(int initialCapaticy)
{
    if(initialCapaticy < 1)
    {
        ostringstream s;
        s << "Initial capacity = "<< initialCapaticy <<"Must be > 0";
        throw illegalParameterValue(s.str());
    }
    firstNode = NULL;
    listSize = 0;
}

//複製構造函數
template<class T>
chain<T>::chain(const chain<T>& theList)
{
    listSize = theList.listSize;

    //鏈表爲空
    if(listSize == 0)
    {
        firstNode = NULL;
        return;
    }

    //鏈表非空
    chainNode<T>* sourceNode = theList.firstNode;
    firstNode = new chainNode<T>(sourceNode->element);//複製第一個元素到theList鏈表

    sourceNode = sourceNode->next;
    chainNode<T>* targetNode = firstNode;

    while(sourceNode != NULL)
    {
        targetNode->next = new chainNode<T>(sourceNode->element);
        targetNode = targetNode->next;
        sourceNode = sourceNode->next;
    }
    targetNode->next = NULL;//結束鏈表
}

//析構函數，刪除鏈表中全部節點
template<class T>
chain<T>::~chain()
{
    chainNode<T> *nextNode;
    while(firstNode != NULL)
    {
        nextNode = firstNode->next;
        delete firstNode;
        firstNode = nextNode;
    }
}

//函數：checkIndex()
//用於檢查元素索引是否合法
template<class T>
void chain<T>::checkIndex(int theIndex) const
{
    if(theIndex < 0 || theIndex >= listSize)
    {
        ostringstream s;
        s <<"index = "<<theIndex <<" size = " <<listSize;
        throw illegalIndex(s.str());
    }
}

//函數：get(int theIndex)
//獲取索引爲theIndex的元素
template<class T>
T& chain<T>::get(int theIndex) const
{
    checkIndex(theIndex);

    chainNode<T>* currentNode = firstNode;
    for(int i = 0;i < theIndex;i++)
        currentNode = currentNode->next;
    return currentNode->element;
}

//返回某元素的索引
template<class T>
int chain<T>::indexOf(const T &theElement) const
{
    chainNode<T>* currentNode = firstNode;
    int index = 0;
    while(currentNode != NULL && currentNode->element != theElement)
    {
        currentNode = currentNode->next;
        index++;
    }

    if(currentNode == NULL)
        return -1;
    else
        return index;
}

//刪除索引爲theIndex 的元素
template<class T>
void chain<T>::erase(int theIndex)
{
    checkIndex(theIndex);

    chainNode<T>* deleteNode;
    if(theIndex == 0)
    {
        deleteNode = firstNode;
        firstNode = firstNode->next;
    }
    else
    {
        chainNode<T>* p = firstNode;
        for(int i = 0;i< theIndex-1;i++)//此處和書上寫法不一樣，斯覺得書上的較繁瑣
        {
            p = p->next;
        }
        deleteNode = p->next;
        p->next = p->next->next;
    }
    listSize--;
    delete deleteNode;
}

//在某索引位置插入一個元素
template<class T>
void chain<T>::insert(int theIndex, const T &theElement)
{
    if(theIndex < 0 || theIndex > listSize)
    {
        ostringstream s;
        s <<"index = " << theIndex <<" size = "<<listSize;
        throw illegalIndex(s.str());
    }
    if(theIndex == 0)
        firstNode = new chainNode<T>(theElement,firstNode);
    else
    {
        chainNode<T>* p = firstNode;
        for(int i = 0;i<theIndex -1;i++)
            p = p->next;

        p->next = new chainNode<T>(theElement,p->next);
    }
    listSize++;
}

//將鏈表元素送到輸出流
template<class T>
void chain<T>::output(ostream &out) const
{
    for(chainNode<T>* currentNode = firstNode;
                       currentNode != NULL;
                        currentNode = currentNode->next)
        out<< currentNode->element << " ";
}
//重載<<
template<class T>
ostream& operator << (ostream& out,const chain<T>& x)
{
    x.output(out);
    return out;
}
#endif // CHAINWITHITERATOR_H

linearList.h

/*
 * 鏈表的抽象類
 * linearList.h
*/
#ifndef linearList_
#define linearList_

#include<iostream>
using namespace std;

template<class T>
class linearList
{
   public:
    virtual ~linearList() {};//析構函數
    virtual bool empty() const = 0;//判斷鏈表是否爲空
    virtual int size() const = 0;//返回鏈表元素個數
    virtual T& get(int theIndex) const = 0;//返回索引theIndex指代元素
    virtual int indexOf(const T& theElement) const = 0;//返回某元素索引
    virtual void erase(int theIndex) = 0;//刪除索引爲theIndex的元素
    virtual void insert(int theIndex,const T& theElelemt) = 0;
    virtual void output(ostream& out) const = 0;
};

#endif

myExceptions.h

/*
 * 異常類
 * myExceptions.h
*/

#ifndef MYEXCEPTIONS_H
#define MYEXCEPTIONS_H

#include<string>
using namespace std;

//不合法的參數值
class illegalParameterValue
{
public:
    illegalParameterValue(string theMessage = "Illegal parameter value")
    {
        message = theMessage;
    }
    void outputMessage()
    {
        cout<< message <<endl;
    }
private:
    string message;
};


//不合法的輸入數據
class illegalInputData
{
public:
    illegalInputData(string theMessage="Illegal data input")
    {
        message = theMessage;
    }
    void outputMessage()
    {
        cout<< message <<endl;
    }
private:
    string message;
};

//不合法的索引
class illegalIndex
{
public:
    illegalIndex(string theMessage = "Illegal index")
    {
        message = theMessage;
    }
    void outputMessage()
    {
        cout<< message <<endl;
    }
private:
    string message;
};


#endif // MYEXCEPTIONS_H

studentRecord1.h

/*
 * 記錄學生信息，包括姓名和分數
 * studentRecord1.h
*/
#ifndef STUDENTRECORD1_H
#define STUDENTRECORD1_H

/*
 * 學生信息的結構體定義
 * studentRecord1.h
*/

#include <string>

using namespace std;

struct studentRecord
{
    int score;
    string *name;

    int operator != (studentRecord x) const
    {
        return (score != x.score);
    }
};

ostream& operator<<(ostream& out,const studentRecord& x)
{
    out << x.score <<' ' <<*x.name <<endl;
    return out;
}


#endif // STUDENTRECORD1_H