Answers for "C++ Vector swap"

2

swap two elements of a vector

std::iter_swap(arr.begin()+pos1,arr.begin()+pos2);
Posted by: Guest on May-01-2020
0

C++ Vector swap syntax

vector<T>().swap(x);   // clear x reallocating
Posted by: Guest on April-22-2021
0

C++ Vector swap

// clearing vectors
#include <iostream>
#include <vector>

int main ()
{
  std::vector<int> myvector;
  myvector.push_back (100);
  myvector.push_back (200);
  myvector.push_back (300);

  std::cout << "myvector contains:";
  for (unsigned i=0; i<myvector.size(); i++)
    std::cout << ' ' << myvector[i];
  std::cout << '\n';

  myvector.clear();
  myvector.push_back (1101);
  myvector.push_back (2202);

  std::cout << "myvector contains:";
  for (unsigned i=0; i<myvector.size(); i++)
    std::cout << ' ' << myvector[i];
  std::cout << '\n';

  return 0;
}
Posted by: Guest on April-22-2021
0

swap vector c++

vector1.swap<vector2>;
//time complexity: O(1)
Posted by: Guest on May-10-2021

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