Strobogrammatic Number

Try to solve the Strobogrammatic Number problem.

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Statement

Given a string num representing an integer, determine whether it is a strobogrammatic number. Return TRUE if the number is strobogrammatic or FALSE if it is not.

Note: A strobogrammatic number appears the same when rotated 180180180 degrees (viewed upside down). For example, “69” is strobogrammatic because it looks the same when flipped upside down, while “962” is not.

Constraints:

  • 1<=1 <= num.length <=50<= 50

  • num contains only digits.

  • num has no leading zeros except when the number itself is zero.

Examples

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