...one of the most highly
regarded and expertly designed C++ library projects in the
world.

— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards

A type of algorithm that sorts based upon distribution instead of by comparison. Wikipedia has an article about Radix Sorting. A more detailed description of various Radix Sorting algorithms is provided here:

Donald Knuth. The Art of Computer Programming, Volume 3: Sorting and Searching, Second Edition. Addison-Wesley, 1998. ISBN 0-201-89685-0. Section 5.2.5: Sorting by Distribution, pp.168-179.

A high-speed comparison-based sorting algorithm that takes *𝑶(N * log(N))*
time. See introsort
and Musser, David R. (1997). "Introspective Sorting and Selection Algorithms",
Software: Practice and Experience (Wiley) 27 (8), pp 983-993, available at
Musser Introsort.

A high-speed hybrid string sorting algorithm that

is partially based upon. See American
flag sort and Peter M. McIlroy, Keith Bostic, M. Douglas McIlroy. Engineering
Radix Sort, Computing Systems 1993.
`string_sort`

ARL (Adaptive Left Radix) is a hybrid cache-friendly integer sorting algorithm
with comparable speed on random data to

,
but does not have the optimizations for worst-case performance, causing it
to perform poorly on certain types of unevenly distributed data.
`integer_sort`

Arne Maus, ARL, a faster in-place, cache friendly sorting algorithm, presented at NIK2002, Norwegian Informatics Conference, Kongsberg, 2002. Tapir, ISBN 82-91116-45-8.

The algorithm that

was originally based on. `integer_sort`

uses a smaller number of key bits at a time for better cache efficiency than
the method described in the paper. The importance of cache efficiency grew
as CPU clock speeds increased while main memory latency stagnated. See Steven
J. Ross, The Spreadsort High-performance General-case Sorting Algorithm, Parallel
and Distributed Processing Techniques and Applications, Volume 3, pp.1100-1106.
Las Vegas Nevada. 2002. See Steven
Ross spreadsort_2002.
`integer_sort`