Erase element from vector c++

Remove element by index from vector c++

// Deletes the second element (vec[1])
vec.erase(vec.begin() + 1);

// Deletes the second through third elements (vec[1], vec[2])
vec.erase(vec.begin() + 1, vec.begin() + 3);

Source: stackoverflow.com

Remove value from vector c++

#include <algorithm>
#include <vector>

// using the erase-remove idiom

std::vector<int> vec {2, 4, 6, 8};
int value = 8 // value to be removed
vec.erase(std::remove(vec.begin(), vec.end(), value), vec.end());

Delete from front in vector c++

// Deleting first element
vector_name.erase(vector_name.begin());

// Deleting xth element from start
vector_name.erase(vector_name.begin()+(x-1));

// Deleting from the last
vector_name.pop_back();

Erase element from vector c++


// erase element from vector by its index
    vector<string> strs {"first", "second", "third", "last"};
      
    string element = "third"; // the element which will be erased
    for(int i=0;i<strs.size();i++)
    {
      if(strs[i] == element)
      strs.erase(strs.begin()+i);
    }

How to delete an element in vector pair in cpp

#include <iostream>
#include <utility>
#include <vector>

using namespace std;


int main()
{
    vector< pair<int, int> > v;
    int N = 5;
    const int threshold = 2;
    for(int i = 0; i < N; ++i)
        v.push_back(make_pair(i, i));

    int i = 0;
    while(i < v.size())
        if (v[i].second > threshold)
            v.erase(v.begin() + i);
        else
            i++;

    for(int i = 0; i < v.size(); ++i)
        cout << "(" << v[i].first << ", " << v[i].second << ")\n";

    cout << "Done" << endl;
}

Source: stackoverflow.com

Similar codes

1 vote162 views3 answers
Arduino get size of array
C++
0 vote158 views1 answer
Std::is_standard_layout
C++
0 vote133 views1 answer
C++ read entire file into a variable
C++
0 vote156 views1 answer
Get value of enum cpp
C++
1 vote329 views1 answer
Have unique vector after sorting vector
C++
56 votes172 views6 answers
List conda environments
C++
0 vote179 views1 answer
How to analyse a poem
C++
0 vote129 views1 answer
Move elements from vector to unordered_set
C++
18 votes129 views5 answers
C++ random number
C++
-1 vote150 views1 answer
51 13 C:\Users\usuario\Documents\Destajo 1.cpp [Error] 'gotoxy' was not declared in this scope
C++