Zerodha Portfolio Counting Bits Range
Zerodha Portfolio Counting Bits Range
HardBit Manipulation0% accepted
Zerodha risk engine needs popcount for every number in [0, n]. Given n, return an array ans of length n+1 where ans[i] is the number of 1s in binary representation of i. Must be O(n) time and space.
Approach
Count set bits for every number 0 to n in O(n) using DP.
Input
2
Output
[0,1,1]
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