Table of Contents

Vectors

1. Declaration and Initialization:

   a. Declare an empty vector of integers: vector<int> myVector;

   b. Declare and initialize a vector with values: vector<int> myVector = {1, 2, 3, 4, 5};

   c. Declare a vector with size n and initialize all values to 0: vector<int> myVector(n, 0);

2. Accessing Elements:

   a. First element: int a = myVector.front()

   b. Last element: int b = myVector.back()

3. Adding Elements:

   a. Add an element to the end: myVector.push_back(6);

   b. Insert an element at a specific position: myVector.insert(myVector.begin() + 2, 10);

4. Size and Capacity:

   a. Get the size (number of elements) of the vector: int size = myVector.size();

5. Sorting and Reversing:

   a.Sort the vector in ascending order: sort(myVector.begin(), myVector.end());

   b.Sort the vector in descending order: sort(myVector.rbegin(), myVector.rend());

   c. Reverse the vector: reverse(myVector.begin(), myVector.end()); x

6. Erasing and Removing Elements:

   a. Erase an element at a specific position: myVector.erase(myVector.begin() + 3);

7. Clearing the Vector: myVector.clear();