Advantages of Using Algorithms in C++

Algorithms require move operators not to throw

All algorithms use std::swap() and std::move() when moving elements around, but only if the move constructor and move assignment are marked noexcept. Therefore, it is important to have these implemented for heavy objects when using algorithms. If they are not available and exception free, the elements will be copied instead.

Note: If we implement a move constructor and a move assignment operator in our class, std::swap() will utilize them and, therefore, a specified std::swap() overload is not needed.

Algorithms have complexity guarantees

Each algorithm’s complexity in the standard library is specified using big $O$ notation. Algorithms are created with performance in mind. Therefore, they do not allocate memory nor do they have a time complexity higher than $$ ...