Leetcode 191. Number of 1 Bits
Count the Hamming weight (number of 1 bits) in the binary representation of a 32-bit integer. For many repeated calls, you can optimize by caching or using a precomputed bit-count lookup table.
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Mid October, 2024
Junior
Find all 1 bits in a sparse bit array using a provided API query(L,R) that returns 1 if there is at least one bit equal to one in A[L..R] and 0 otherwise
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