Same When Flipped

Easy

A sign shows a number written as a string of digits digits. The sign is turned through 180°. Return True if it reads exactly the same after the turn, and False otherwise. When turned, 0, 1 and 8 stay themselves, 6 becomes 9 and 9 becomes 6. The other digits (2, 3, 4, 5, 7) no longer look like digits. Turning the sign also reverses the order of the digits.

Example 1

digits='619' → True

Turned over, 6 becomes 9, 1 stays 1 and 9 becomes 6, and the order reverses: it reads "619" again.

Example 2

digits='88' → True

An 8 turns into itself.

Example 3

digits='26' → False

An upside-down 2 is not a digit at all.

Constraints

1 ≤ digits.length ≤ 50
digits consists of digits only

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Topics

Hash Table Two Pointers String

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Input

digits='619'

Expected

True

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