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Solution: Confusing Number

Explore the concept of confusing numbers, which change into a different valid number when rotated 180 degrees. Understand the algorithm that reverses and converts digits using a mapping to solve this problem efficiently. Learn how to implement this check with O(log n) time and constant space complexity.

Statement

A confusing number is a number that, when rotated 180 degrees, produces a valid yet different number.

Digits can be rotated 180180 degrees according to the following rules:

  • The digits 00 ...