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Bit Manipulation
LC 338
Counting Bits
Given an integer n, return an array ans of length n + 1 such that for each i (0 0 1 --> 1 2 --> 10
Asked at 9 companies
Amazon
Apple
Bloomberg
+6 more
Hints
1.
Think about what data structure fits Counting Bits
2.
Consider the brute force complexity and how to optimize
3.
Can you trade space for time?
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