《C++ Primer》习题9.39

#include <iostream>
#include <vector>
#include <string>


using std::cout;
using std::cin;
using std::endl;
using std::string;
using std::vector;



int _tmain(int argc, _TCHAR* argv[])
{
    string line1 = "We were her pride of 10 she named us:";
    string line2 = "Benjamin, Phoenix, the Prodigal";
    string line3 = "and perspicacious pacific Suzanne";

    string sentence = line1 + ' ' + line2 + ' ' + line3;
    string separator = " ,0123456789"; // 分隔符
    string::size_type pos = 0; // 当前位置
    string::size_type wordLength = 0,maxLength = 0, minLength = 0; // 最长和最短单词的长度
    int maxCount = 0 , minCount = 0 ; //最长和最短单词的个数
    string::size_type startPos = 0 , endPos = 0; //单词的位置

    vector<string> maxWords;
    vector<string> minWords;

    // 用第一个单词初始化
    pos = sentence.find_first_not_of(separator,pos);
    startPos = pos;
    pos++;
    pos = sentence.find_first_of(separator,pos);
    endPos = pos;
    maxLength = minLength = endPos - startPos;
    maxWords.push_back(sentence.substr(startPos,maxLength));
    minWords.push_back(sentence.substr(startPos,minLength));

    while((pos = sentence.find_first_not_of(separator,pos)) != string::npos)
    {
        startPos = pos;
        pos++;
        if((pos = sentence.find_first_of(separator,pos))!=string::npos)
        {
            endPos = pos;
            wordLength = endPos - startPos;
            if(maxLength < wordLength)
            {
                maxWords.clear();
                maxLength = wordLength;
                maxWords.push_back(sentence.substr(startPos,wordLength));
            }
            else if(maxLength == wordLength)
                maxWords.push_back(sentence.substr(startPos,wordLength));
            if(minLength > wordLength)
            {
                minWords.clear();
                minLength = wordLength;
                minWords.push_back(sentence.substr(startPos,wordLength));
            }
            else if(minLength == wordLength)
                minWords.push_back(sentence.substr(startPos,wordLength));
            pos++;
        }
    }

    system("pause");
    return 0;
}