Question

How to remove element from vector in C++

Answer 1

#include <iostream>
#include <vector>
#include <algorithm>

using std::cout;
using std::endl;
using std::vector;

int main()
{
	vector<int> vec{ 1, 2, 3, 4, 5};
	vector<int>::iterator it, it_end;

	it_end = remove(vec.begin(), vec.end(), 2);

	for (it = vec.begin(); it < it_end; it++)
		cout << *it << " ";
	
	cout << endl;

	return 0;
}

/*
run:

1 3 4 5

*/

 

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Answer 2

#include <iostream>
#include <vector>
#include <algorithm>

using std::cout;
using std::endl;
using std::vector;

int main()
{
	vector<int> vec{ 1, 2, 3, 4, 5};

	it_end = remove(vec.begin(), vec.end(), 2);

	for (int val : vec)
		cout << val << " ";
	
	cout << endl;

	return 0;
}

/*
run:

1 3 4 5 5

*/

 

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