CodingBat removeAt

removeAt

Return a version of the given string, where for every at (@) in the string the at and the chars immediately to its left and right are gone. So "ab@cd" yields "ad" and "ab@@cd" also yields "ad".

removeAt("ab@cd") → "ad"
removeAt("ab@@cd") → "ad"
removeAt("sm@eilly") → "silly"

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Difficulty: 17

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