Write a c++ function that splits the string X into an array bases on the delimeter character Y.

main.cpp

/**
 * @author Ali Ahmad 
 * The program solves the following problem
 * 
 * Write a c++ function that splits the string X into an array
 * bases on the delimeter character Y.
 * string* tokenizer(string X, char Y)
 * 
 * Test cases:
 * X: "1,2,3,4"     Returns string array of size 4 with the elements
 * Y: ','           {"1", "2", "3", "4"}
 * 
 * X: "1,2, 4,5"    Returns string array of size 2 with the elements
 * Y: ' '           {"1,2,", "4,5"}
 * 
 * X: "9:40:13"     Returns string array of size 3 with the elements
 * Y: ':'           {"9", "40", "13"}
*/

#include <iostream>
using namespace std;

/**
 * @return {int} count of delimeters in string s
 * @param s {string} the string to check for delimeters
 * @param delimeter {char} the character delimeter
 */

int getDelimeterCount(string s, char delimeter)
{
    int count = 0;
    for (int i = 0; i < s.length(); i++)
    {
        if (s[i] == delimeter)
        {
            count++;
        }
    }
    return count;
}

/**
 * @return {Pointer} a pointer to a string array
 * containing splitted string based on delimeter y
 * 
 * @param s {string}
 * @param delimeter {char}
 */
string *tokenizer(string x, char y)
{
    int delimeterCount = getDelimeterCount(x, y);
    // delimter count is always less the size of array
    string *arr = new string[delimeterCount + 1];

    int arrIndex = 0;
    int cutIndex = 0;
    int delimeterPositionCount = 0;
    int i = 0;
    for (i = 0; i < x.length(); i++)
    {
        if (x[i] == y)
        {
            string subStr = x.substr(cutIndex, delimeterPositionCount);
            cutIndex = i + 1;
            delimeterPositionCount = 0;
            arr[arrIndex++] = subStr;
        }
        else
        {
            delimeterPositionCount++;
        }
    }
    // adding the last index
    arr[arrIndex] = x.substr(cutIndex, delimeterPositionCount);

    return arr;
}

int main()
{
    string s = "9:40:13";
    char delimeter = ':';
    string *splittedString = tokenizer(s, delimeter);

    // printing the array
    int delimeterCount = getDelimeterCount(s, delimeter);
    for (int i = 0; i < delimeterCount + 1; i++)
    {
        cout << splittedString[i] << ' ';
    }
    cout << endl;
    return 0;
}