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[Algorithm] 문자열 내림차순으로 배치하기 #50

@hwangJi-dev

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@hwangJi-dev

💬 문제

[코딩테스트 연습 - 문자열 내림차순으로 배치하기](https://school.programmers.co.kr/learn/courses/30/lessons/12917)

💬 풀이

func solution(_ s:String) -> String {
    return s.sorted(by: >).map{ String($0) }.joined()
}

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