StringStream in C++ – Hacker Rank Solution

 

Problem

stringstream is a stream class to operate on strings. It basically implements input/output operations on memory (string) based streams. stringstream can be helpful in different type of parsing. The following operators/functions are commonly used here

• Operator >> Extracts formatted data.
• Operator << Inserts formatted data.
• Method str() Gets the contents of underlying string device object.
• Method str(string) Sets the contents of underlying string device object.

Its header file is sstream.

One common use of this class is to parse comma-separated integers from a string (e.g., “23,4,56”).

stringstream ss("23,4,56");
char ch;
int a, b, c;
ss >> a >> ch >> b >> ch >> c;  // a = 23, b = 4, c = 56

You have to complete the function vector parseInts(string str). str will be a string consisting of comma-separated integers, and you have to return a vector of int representing the integers. Note If you want to know how to push elements in a vector, solve the first problem in the STL chapter.

Input Format :

The first and only line consists of n integers separated by commas.

Output Format :

Print the integers after parsing it.P.S.: I/O will be automatically handled. You need to complete the function only.

Sample Input :

23,4,56

Sample Output :

23
4
56

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StringStream in C++ – Hacker Rank Solution

Code:

#include <sstream>

#include <vector>

#include <iostream>

using namespace std;

vector<int> parseInts(string str) 

{

// Complete this function

    stringstream ss(str);

    vector<int> result;

    char ch;

    int tmp;

    while (ss >> tmp) 

    {

        result.push_back(tmp);

        ss >> ch;

    }

    return result;

}

int main() 

{

    string str;

    cin >> str;

    vector<int> integers = parseInts(str);

    for(int i = 0; i < integers.size(); i++) 

    {

        cout << integers[i] << "\n";

    }

    

    return 0;

}

Disclaimer: The above Problem (StringStream in C++ ) is generated by Hackerrank but the Solution is Provided by MultiplexCoder. This tutorial is only for Educational and Learning purposes.

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