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Count how many operations it takes to reduce a nonnegative integer to zero if you must divide by 2 when it's even and subtract 1 when it's odd. This can be done by simple simulation or more efficiently with bitwise reasoning (constraints: 0 ≤ num ≤ 10^6).
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Leetcode 1342. Number of Steps to Reduce a Number to Zero
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Source snapshot: Nov 12, 2026
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