C++字符串分割函数split实现

古城微笑少年丶 2022-05-30 09:18 400阅读 0赞

百度搜的几乎都是bug一堆。。自测函数代码如下(欢迎提bug)：

/*
    *inputString 输入的字符串
    *splitString 用于分割的字符串
    */
    vector<string> splitStdString(const string& inputString, const string& splitString)
    {
        vector<string> stringVec = {};
        size_t pos = 0;
        size_t inputStringLength = inputString.length();
        size_t splitStringLen = splitString.length();
        if (0 == splitStringLen)
        {
            return stringVec;
        }
    
        while (pos < inputStringLength)
        {
            int findPos = inputString.find(splitString, pos);
            if (findPos == string::npos)
            {
                // 未找到  取此部分作为一个elemstring
                string str = inputString.substr(pos, inputStringLength - pos);
                if (str.length() > 0)
                {
                    // 过滤掉空字符串
                    stringVec.emplace_back(str);
                }
                break;
            }
            // elemString 为分隔出来的串
            string elemString = inputString.substr(pos, findPos - pos);
            if (elemString.length() > 0)
            {
                stringVec.emplace_back(elemString);
            }
            pos = findPos + splitStringLen;
        }
    
        return stringVec;
    }

--------------------

自测程序

#include <iostream>
    #include <string>
    #include <vector>
    using namespace std;
    
    vector<string> splitStdString(const string& inputString, const string& splitString)
    {
        vector<string> stringVec = {};
        size_t pos = 0;
        size_t inputStringLength = inputString.length();
        size_t splitStringLen = splitString.length();
        if (0 == splitStringLen)
        {
            return stringVec;
        }
    
        while (pos < inputStringLength)
        {
            int findPos = inputString.find(splitString, pos);
            if (findPos == string::npos)
            {
                // 未找到  取此部分作为一个elemstring
                string str = inputString.substr(pos, inputStringLength - pos);
                if (str.length() > 0)
                {
                    // 过滤掉空字符串
                    stringVec.emplace_back(str);
                }
                break;
            }
            // elemString 为分隔出来的串
            string elemString = inputString.substr(pos, findPos - pos);
            if (elemString.length() > 0)
            {
                stringVec.emplace_back(elemString);
            }
            pos = findPos + splitStringLen;
        }
    
        return stringVec;
    }
    int main()
    {
        string str1 = {
       "ASKJ_FKKJSJHFJASH_KKKJF_hjhKJKKK_HFjaK_KKAA"};
        vector<string> splitResult1 = splitStdString(str1, "_");
        vector<string> splitResult2 = splitStdString(str1, "KK");
    
        return 0;
    };