//问题描述: Read a sequence of words from input. Use Quit as a word
// that terminates the input. Print the words in the order they were
// entered. Don't print a word twice. Modify the program to sort the
// words before printing them.
//备注:
//作者: 杨明哲
//完成日期: 2005-03-25
//BUG报告； dearymz@163.com
#include <vector>
#include <string>
#include <iostream>
#include <algorithm>
using namespace std;
namespace ymz
{
struct Pair
{
string word;//要统计的单词
int counter;//该单词出现的次数
};
typedef vector<Pair>::const_iterator icPair;
typedef vector<Pair>::iterator iPair;
const int REDUNDANCE = -1;//冗余标志
//Pair 结构体的比较函数
int PairCompare(const Pair& p1, const Pair& p2)
{
if(p1.word == p2.word)
return 0;
else if(p1.word > p2.word)
return 1;
else
return -1;
}
//Pair 结构体的比较函数
bool operator==(const Pair& p1, const Pair& p2)
{
return PairCompare(p1, p2) == 0;
}
//Pair 结构的比较函数
bool operator<(const Pair& p1, const Pair& p2)
{
return PairCompare(p1, p2) < 0;
}
//对words中的单词进行个数统计。重复的用“REDUNDANCE”标识
void Count(vector<ymz::Pair>& words)//个数统计
{
bool findFlag;
for(unsigned int i = 0; i < words.size(); i++)
{
findFlag = false;
for(unsigned int j = 0; j < i; j++)
{
if(words[j].counter != REDUNDANCE && words[i] == words[j])//以前有重复的
{
findFlag = true;
words[j].counter++;//前面的计数器增加
words[i].counter = REDUNDANCE;//设置删除标志，以后可以将这个对象删除的
}
else//以前没有重复的
{
words[i].counter = 1;//这应该是第一次出现的单词
}
}
if(findFlag)
words[i].counter = REDUNDANCE;
}
}
//将words中用“REDUNDANCE”标识的对象去除
void Unrepeatable(vector<ymz::Pair>& words) //去除重复
{
for(int i = static_cast<int>(words.size()) - 1; i >=0; i--)
{
if(words[i].counter == REDUNDANCE)
{
words.erase(words.begin() + i);
}
}
//for(iPair it = words.)
}
//将pair对象格式化输出到流
ostream& operator<<(ostream& ostr, const Pair& pair)
{
if(pair.counter == REDUNDANCE)
ostr<<"[重复]";
else
ostr<<pair.counter;
ostr<<"\t"<<pair.word;
return ostr;
}
//对words进行按word属性的字母表顺序进行排序
void Sort(vector<ymz::Pair>& words)
{
sort(words.begin(), words.end(), ymz::operator<);
}
}
const char TERMINATE[] = "Quit";
const int bufSize = 64;
void inputWords(vector<ymz::Pair>& words)
{
ymz::Pair p;
p.counter = 1;
cout<<"请输入单词，每行一个。（键入"<<TERMINATE<<"退出）"<<endl;
char buf[bufSize + 1];//输入缓冲区
buf[bufSize] = '\0';
while(true)
{
cin.getline(buf, bufSize);
if(strcmp(buf, TERMINATE) == 0)
break;
p.word = buf;
words.push_back(p);
}
}
//
////插入单词的宏定义
//#define ADD(a) \
// p.word = a;\
// pairs.push_back(p)
void main()
{
//初始化要查找的对象
vector<ymz::Pair> pairs;
/*ymz::Pair p;
ADD("A");
ADD("B");
ADD("A");
ADD("A");
ADD("C");
ADD("B");*/
inputWords(pairs);
for(ymz::iPair it = pairs.begin(); it != pairs.end(); it++)
it->counter = 1;
//开始处理
cout<<"要处理的单词为："<<endl;
for(it = pairs.begin(); it != pairs.end(); it++)
cout<<*it<<endl;
ymz::Sort(pairs);
cout<<"排序后的单词为："<<endl;
for(it = pairs.begin(); it != pairs.end(); it++)
cout<<*it<<endl;
ymz::Count(pairs);
cout<<"计数后的单词为："<<endl;
for(it = pairs.begin(); it != pairs.end(); it++)
cout<<*it<<endl;
ymz::Unrepeatable(pairs);
cout<<"去掉重复后的单词为："<<endl;
for(it = pairs.begin(); it != pairs.end(); it++)
cout<<*it<<endl;
cin.get();
}
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