Question

Letter Separated Numbers (C++)

I've encountered a corrupted database that has a series of important numbers, but instead of being separated by a space, the spaces have been randomly changed in alphabetic characters. Write a function named "my_numbers" that can take a string like "18y5638b-78" and return a vector of ints {18, 5638, -78}.

Thanks!

Answer 1

#include<iostream>

#include<vector>

#include<string>

using namespace std;

vector<int> my_numbers(string data){

    vector<int> numbers;

    string temp;

    // looping through string

    for(int i=0;(i<data.size() && data[i]!='\0');i++){

        // if digit then adding to temp

        if(isdigit(data[i])){

            temp += data[i];

            continue;

        }

        // for negative sign

        else if(data[i]=='-'){

            if(temp.size()>=1 && temp != "-"){

            numbers.push_back(stoi(temp));}

            temp = "-";

        }

        // adding to vecror and resetting temp

        else{

            if(temp.size()>=1){

                numbers.push_back(stoi(temp));}

            temp = "";

        }

    }

    if(temp.size()>=1)

    numbers.push_back(stoi(temp));

    

    return numbers;

}

// test function

int main(){

    vector<int> numbers = my_numbers("18y5638n-78");

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

        cout<<numbers.at(i)<<"  ";

    }

    cout<<endl;

    return 0;

}

#compile and run

$ g++ -std=c++11 filterint.cpp

$ ./a.out

18 5638 -78