♦ C++ Vectors
♣ About C++ Vectors
Vector is a C++ library which provides facilities of dynamic memory allocated array.There exist various methods for Vectors which can be used for optimized implementation.
Below is a tabular explanation of some of the popular Vector Methods
| Method | Working |
|---|---|
| pushback() | Add element at the end |
| pop_back() | Delete Last element |
| empty() | Test whether the vector is empty |
| erase() | Erase elements |
| size() | Returns size of the vector |
| swap() | Swap Content |
| reserve() | Request a change in capacity |
| resize() | Change size |
| begin() | Return iterator to Beginning |
| end() | Return iterator to End |
| rbegin() | Return reverse iterator to reverse beginning |
| rend() | Return reverse iterator to reverse end |
| cbegin() | Return const_iterator to Beginning |
| cend() | Return const_iterator to End |
| crbegin() | Return const_reverse_iterator to reverse Beginning |
| crend() | Return const_reverse_iterator to reverse End |
♣ Example1: push_back() in vectors C++
In this example, push_back() is illustrated. Example
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♣ Example2: pop_back() in vectors C++
In this example, pop_back() is illustrated. Example
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Output:
♣ Example3: empty() in vectors C++
In this example, empty() is illustrated. Example
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♣ Example4: size() in vectors C++
In this example, size() is illustrated. Example
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