Non-negative Integers without Consecutive Ones: coding question

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Count how many integers in [0, n] have binary representations that never contain consecutive 1s; this is typically solved by scanning n's bits and using a Fibonacci-like digit-DP over bit positions to count valid prefixes in O(number of bits) time.

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Leetcode 600. Non-negative Integers without Consecutive Ones
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Non-negative Integers without Consecutive Ones

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Non-negative Integers without Consecutive Ones

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