namespace StringUtils {
	std::string sub_string(char* str, int start, int end) {
		int str_len = sizeof(str) / sizeof(char);

		if ((end - start) > str_len) {
			return "";
		}

		std::string out;

		for (int i = start; i < end; i++) {
			out += str[i];
		}

		return out;
	}

	std::vector<std::string>* str_tok(std::string str, std::string delimiter) {
		int str_len = str.length();
		int del_len = delimiter.length();

		if (del_len > str_len) {
			return nullptr;
		}

		std::vector<std::string>* strings = new std::vector<std::string>();

		char* char_arr = new char[str_len];
		char_arr = (char*)str.c_str();

		std::string temp_str = "";

		for (int i = 0; i < str_len; i++) {
			if (sub_string(char_arr, i, i + del_len) == delimiter) {
				strings->push_back(temp_str);
				temp_str = "";
			}
			else {
				temp_str += char_arr[i];
			}
		}

		if (temp_str != "") {
			strings->push_back(temp_str);
		}

		return strings;
	}
}