Problem : https://www.hackerrank.com/challenges/vector-erase/problem
Solution :
#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
int main() {
/* Enter your code here. Read input from STDIN. Print output to STDOUT */
int n ;
cin>>n;
vector<int> v;
int temp;
for(int i =0;i<n;i++){
cin>>temp;
v.push_back(temp);
}
// 1 4 6 2 8 9
int pos1; // 2
cin>>pos1;
v.erase(v.begin()+pos1-1);
// 1 6 2 8 9
int a, b; // a = 2 and b = 4
cin>>a>>b;
v.erase(v.begin()+a-1,v.begin()+b-1);
// 1 8 9
cout<<v.size()<<endl;
for(int i:v){
cout<<i<<" ";
}
}