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Leetcode 246. Strobogrammatic Number

Determine whether a numeric string is strobogrammatic — i.e., it appears the same when rotated 180 degrees using the digit mappings 0↔0, 1↔1, 6↔9, and 8↔8. This requires checking that each pair of symmetric characters across the string matches the strobogrammatic mapping.

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Mid September, 2025

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Mid August, 2025

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Mid-level

Early August, 2025

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Senior

https://leetcode.com/problems/strobogrammatic-number/description/

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