How to find all "1" bits in a unsigned char bitmapRep[8192]?

Given a unsigned char bitmapRep[8192], how to efficiently find out all "开发者_运维百科1" bits' positions? Thanks.

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What do you mean by "find"?

This may seem like a smart-ass answer, but I'm perfectly serious: you already have found them. There's a perfect map describing exactly where all the 1 bits are found, and it has a bit set in the corresponding positions.

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Homework?

hint - Lookup table for each byte