Question

How to remove all empty elements from a vector in C++

Answer 1

#include <string>
#include <vector>
#include <iostream>
#include <algorithm>
 
int main()
{
    std::vector<std::string> v = { "c++", "", "\t", "  ", "c", "\n", "c#", "", "java"};
 
    auto isEmpty = [](const std::string &s) {
        return s.find_first_not_of(" \n\t") == std::string::npos;
    };
 
    v.erase(std::remove_if(v.begin(), v.end(), isEmpty), v.end());
 
    for (const auto &s : v ) {
        std::cout << s << ' ';
    }
 
    return 0;
}




/*
run:

c++ c c# java 

*/

 

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