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Day 29; Bitwise AND.swift
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Day 29; Bitwise AND.swift
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import Foundation
/*
* Complete the 'bitwiseAnd' function below.
*
* The function is expected to return an INTEGER.
* The function accepts following parameters:
* 1. INTEGER N
* 2. INTEGER K
*/
func bitwiseAnd(N: Int, K: Int) -> Int {
var max: Int = 0
for i in 1...N-1 {
for j in i+1...N {
let value = i & j
max = value < K ? value > max ? value : max : max
}
}
return max
}
let stdout = ProcessInfo.processInfo.environment["OUTPUT_PATH"]!
FileManager.default.createFile(atPath: stdout, contents: nil, attributes: nil)
let fileHandle = FileHandle(forWritingAtPath: stdout)!
guard let t = Int((readLine()?.trimmingCharacters(in: .whitespacesAndNewlines))!)
else { fatalError("Bad input") }
for tItr in 1...t {
guard let firstMultipleInputTemp = readLine()?.replacingOccurrences(of: "\\s+$", with: "", options: .regularExpression) else { fatalError("Bad input") }
let firstMultipleInput = firstMultipleInputTemp.split(separator: " ").map{ String($0) }
guard let count = Int(firstMultipleInput[0])
else { fatalError("Bad input") }
guard let lim = Int(firstMultipleInput[1])
else { fatalError("Bad input") }
let res = bitwiseAnd(N: count, K: lim)
fileHandle.write(String(res).data(using: .utf8)!)
fileHandle.write("\n".data(using: .utf8)!)
}