40 lines
1.1 KiB
Swift
40 lines
1.1 KiB
Swift
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import Foundation
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let input = loadData(day: 2)
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var valids = 0
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var valid2 = 0
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var scanner = Scanner(string: input)
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while !scanner.isAtEnd {
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guard let min = scanner.scanInt(),
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scanner.scanString("-") != nil,
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let max = scanner.scanInt(),
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let character = scanner.scanCharacter(),
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scanner.scanString(":") != nil,
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let password = scanner.scanUpToCharacters(from: .newlines)
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else {
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fatalError("Invalid input");
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}
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let count = password.lazy.filter { $0 == character }.count
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if min <= count && count <= max {
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print("valid", min, max, character, password)
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valids += 1
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}
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let first = password.index(password.startIndex, offsetBy: min - 1, limitedBy: password.endIndex).map { password[$0] }
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let second = password.index(password.startIndex, offsetBy: max - 1, limitedBy: password.endIndex).map { password[$0] }
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if (first == character || second == character) && first != second {
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print("valid 2", password)
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valid2 += 1
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}
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}
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print("Valid old", valids)
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print("Valid new", valid2)
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