Cascade merge sort

Cascade merge sort is similar to the polyphase merge sort but uses a simpler distribution. The merge is slower than a polyphase merge when there are fewer than six files, but faster when there are more than six.
References

Bradley, James (1982), File and Data Base Techniques, Holt, Rinehart and Winston, ISBN 0-03-058673-9 

External links

http://www.minkhollow.ca/Courses/461/Notes/Cosequential/Cascade.html
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