Created
August 2, 2016 17:31
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| def count_set_bits(a_bv): | |
| tmp = a_bv | |
| next_i = 0 | |
| last_diff = 0 | |
| tmp_diff = 0 | |
| set_bits_count = 0 | |
| most_contiguous_set_bits = 0 | |
| current_contiguous_set_bits = 0 | |
| while tmp: | |
| next_i = tmp & (tmp - 1) | |
| last_diff = tmp_diff | |
| tmp_diff = tmp - next_i | |
| if not tmp_diff >> 1 == last_diff: | |
| most_contiguous_set_bits = current_contiguous_set_bits | |
| current_contiguous_set_bits = 0 | |
| current_contiguous_set_bits += 1 | |
| tmp = next_i | |
| set_bits_count += 1 | |
| if current_contiguous_set_bits > most_contiguous_set_bits: | |
| most_contiguous_set_bits = current_contiguous_set_bits | |
| return set_bits_count, most_contiguous_set_bits |
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