Shell Sort with Hibbard Gaps
Shell Sort with Hibbard Gaps Shell sort with Hibbard gaps replaces the simple halving sequence with a more structured progression: $$ g_k = 2^k - 1 $$ This sequence produces gaps such as: $$ 1, 3, 7, 15, 31, \dots $$ In practice, you use the largest value less than $n$, then proceed in decreasing order down to 1. This improves performance over the basic Shell gap sequence by reducing...