The Checklist

Vector

• What is mean by vector
  In C++, the Standard Template Library (STL) provides a vector container that is a dynamic array-like data structure. It is part of the C++ Standard Library and is a very versatile and commonly used data structure for storing and managing collections of objects. Here's how you can work with vectors in C++
• Necessary Header File
  You need to include the header to use vectors. Here's how you can do it
  

  #include < Vector>

• Declaration and Initialization
  1) Creates an empty vector of integers
  vector< int> myVector;
  2) Creates a vector of doubles and initializes it with values
  vector< double> doubleVector = {1.2, 3.4, 5.6};
• How to Add Elements In Vector
  You can add elements to a vector using the push_back() method:
  myVector.push_back(42);
  myVector.push_back(15);
• How to Access Elements
  You can access elements using the [] operator or the at() method:
  int value1 = myVector[0];
  int value2 = myVector.at(1);
• Iterating Through a Vector
  There are various methods to iterate through a vector by simple
  1)for
  2)while
  Using Simple For loop
  for (int i = 0; i < myVector.size(); i++)
  {
  Access elements using myVector[i]
  }
  Using For each loop
  for(auto it : myvector)
  {
  it
  }
  
• how to get Size of a Vector
  You can get the size (number of elements) of a vector using the size() method
  int size = myVector.size();
• How to Removing Elements
  You can remove elements using the pop_back() method to remove the last element or use the erase() method to remove elements at specific positions
  1) Removes the last element
  myVector.pop_back();
  2)Removes the element at index 2
  myVector.erase(myVector.begin() + 2);