C++ Standard Library Algorithms Reference

The C++ Standard Library provides a wide range of algorithms that can be used to manipulate and process sequences of data. These algorithms are designed to be efficient and easy to use.

Common Algorithms

Sort: std::sort is used to sort a range of elements.
```
std::sort(v.begin(), v.end());
```
Search: std::find is used to find an element in a range.
```
auto it = std::find(v.begin(), v.end(), value);
```
Copy: std::copy is used to copy elements from one range to another.
```
std::copy(v.begin(), v.end(), back_inserter(target));
```

Transform: std::transform is used to transform elements in a range.

std::transform(v.begin(), v.end(), back_inserter(target), [](int x) { return x * 2; });

Algorithm Examples

Here are some examples of how algorithms can be used in practice:

Sorting a Vector:

std::vector<int> v = {4, 1, 3, 9, 7};
std::sort(v.begin(), v.end());

Finding an Element:

std::vector<int> v = {1, 2, 3, 4, 5};
auto it = std::find(v.begin(), v.end(), 3);
if (it != v.end()) {
  std::cout << "Element found: " << *it << std::endl;
} else {
  std::cout << "Element not found" << std::endl;
}

Copying Elements:

std::vector<int> v = {1, 2, 3, 4, 5};
std::vector<int> target;
std::copy(v.begin(), v.end(), back_inserter(target));

Transforming Elements:

std::vector<int> v = {1, 2, 3, 4, 5};
std::vector<int> target;
std::transform(v.begin(), v.end(), back_inserter(target), [](int x) { return x * 2; });

Learn More

For more information on the C++ Standard Library algorithms, visit our C++ Standard Library Reference.