Question

How to remove all occurrences of N specific characters from string in C++

Answer 1

#include <iostream>
#include <algorithm>

int main() {
    std::string s = "c++ python c java php";
    std::string chars = "pa";
 
    for (char ch: chars) {
        s.erase(std::remove(s.begin(), s.end(), ch), s.end());
    }

    std::cout << s;

    return 0;
}




/*
run:

c++ ython c jv h

*/

 

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Answer 2

#include <iostream>
#include <algorithm>

int main() {
    std::string s = "c++ python c java php";
    std::string chars = "pa";
 
    s.erase(remove_if(s.begin(), s.end(),
                        [&chars](const char& ch) {
                            return chars.find(ch) != std::string::npos;
                        }),
                        s.end());
    std::cout << s;

    return 0;
}




/*
run:

c++ ython c jv h

*/

 

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