Problem library

Mirror Tag

Easy
stringstwo pointers
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A gamer tag is a *mirror tag* if it reads the same forwards and backwards once you ignore case and every character that is not a letter or digit.

Return true if tag is a mirror tag. A tag with no letters or digits counts as a mirror tag.

Examples

Input: tag = "Race_Car"
Output: true
Input: tag = "xX_pro_Xx"
Output: false
Input: tag = "arena"
Output: false