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import UIKit
var str = "Hell12o, p3laygrou4.5nd"
var ans = ""
str.forEach { s in
if (s.description.range(of: "[0-9-.]",
options: .regularExpression,
range: nil,
locale: nil) != nil) {
ans += s.description

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@daisukenagata daisukenagata commented Mar 7, 2021

スクリーンショット 2021-03-08 7 34 47

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