Boost C++ Libraries

Single Thread Algorithms

This table provides a brief description of the single thread algorithms of the library.

                  |       |                            |                                         | Comparison          |
Algorithm         |Stable |   Additional memory        |  Best, average, and worst case          | method              |
------------------+-------+----------------------------+-----------------------------------------+---------------------+
spreadsort        |  no   |      key_length            | N, Nsqrt(LogN), min(NlogN, Nkey_length) | Hybrid radix sort   |
pdqsort           |  no   |      Log N                 | N, NLogN, NLogN                         | Comparison operator |
spinsort          |  yes  |      N / 2                 | N, NLogN, NLogN                         | Comparison operator |
flat_stable_sort  |  yes  |size of the data / 256 + 8K | N, NLogN, NLogN                         | Comparison operator |
                  |       |                            |                                         |                     |

• spreadsort is an extremely fast hybrid radix sort algorithm, designed and developed by Steven Ross.
• pdqsort is a improvement of the quick sort algorithm, designed and developed by Orson Peters.
• spinsort is a stable sort that is fast with random or nearly sorted data, designed and developed by Francisco Tapia.
• flat_stable_sort is a stable sort that uses very little additional memory (around 1% of the size of the data), providing 80% - 90% of the speed of spinsort, designed and developed by Francisco Tapia.