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c++ vector erase by value
//wiki - erase-remove idiom
// Use g++ -std=c++11 or clang++ -std=c++11 to compile.
#include <algorithm> // remove and remove_if
#include <iostream>
#include <vector> // the general-purpose vector container
void Print(const std::vector<int>& vec) {
for (const auto& i : vec) {
std::cout << i << ' ';
}
std::cout << '\n';
}
int main() {
// Initializes a vector that holds numbers from 0-9.
std::vector<int> v = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
Print(v);
// Removes all elements with the value 5.
v.erase(std::remove(v.begin(), v.end(), 5), v.end());
Print(v);
}
/*
Output:
0 1 2 3 4 5 6 7 8 9
0 1 2 3 4 6 7 8 9
*/
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());
c++ remove element from vector
vector.erase(position) // remove certain position
// or
vector.erase(left,right) // remove positions within range
Source: iq.opengenus.org
c++ vector remove element by value
carVec.erase(std::remove_if(carVec.begin(), carVec.end(), [&id_to_delete](const Car& ele)->bool
{
return ele.getnewId() == id_to_delete;
}), carVec.end());
Source: stackoverflow.com
remove element by value vector c++
#include<bits/stdc++.h>
using namespace std;
int main(){
vector<int> v;
//Insert values 1 to 10
v.push_back(20);
v.push_back(10);
v.push_back(30);
v.push_back(20);
v.push_back(40);
v.push_back(20);
v.push_back(10);
vector<int>::iterator new_end;
new_end = remove(v.begin(), v.end(), 20);
for(int i=0;i<v.size(); i++){
cout << v[i] << " ";
}
//Prints [10 30 40 10]
return 0;
}
C++Copy
Source: iq.opengenus.org
vector erase specific element
template <typename T>
void remove(std::vector<T>& vec, size_t pos)
{
std::vector<T>::iterator it = vec.begin();
std::advance(it, pos);
vec.erase(it);
}
Source: stackoverflow.com
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