incorrectPasscodeAttempts.md

Incorrect Passcode Attempts

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One Very Important User (VIU) has a Very Confidential Document (VCD) stored on his Dropbox account. He doesn't let anyone see the VCD, especially his roommates who often have access to his devices.

Opening the Dropbox mobile app on the VIU's tablet requires a four-digit passcode. To ensure the confidentiality of the stored information, the device is locked out of Dropbox after 10 consecutive failed passcode attempts. We need to implement a function that, given an array of attempts made throughout the day and the correct passcode, checks to see if the device should be locked, i.e. 10 or more consecutive failed passcode attempts were made.

Example

• For
  passcode = "1111" and

  attempts = ["1111", "4444",
              "9999", "3333",
              "8888", "2222",
              "7777", "0000",
              "6666", "7285",
              "5555", "1111"]
  
  

  the output should be
  solution(passcode, attempts) = true.

  The first attempt is correct, so the user must have successfully logged in. However, the next 10 consecutive attempts are incorrect, so the device should be locked. Thus, the output should be true.

• For
  passcode = "1234" and

  attempts = ["9999", "9999",
              "9999", "9999",
              "9999", "9999",
              "9999", "1234",
              "9999", "9999",
              "9999", "9999"]
  
  

  the output should be
  solution(passcode, attempts) = false.

  There are only 9 consecutive incorrect attempts, so there's no need to lock the device.

Input/Output

• [execution time limit] 4 seconds (py3)

• [input] string passcode

  String consisting of exactly 4 digits representing the correct passcode.

  Guaranteed constraints:
  passcode.length = 4.

• [input] array.string attempts

  Array representing the passcode attempts in the order they were made. Each element of attempts is a string consisting of exactly 4 digits.

  Guaranteed constraints:
  0 ≤ attempts.length ≤ 20,
  attempts[i].length = 4.

• [output] boolean

  true if 10 or more consecutive failed passcode attempts were made, false otherwise.

[Python 3] Syntax Tips

# Prints help message to the console
# Returns a string
def helloWorld(name):
    print("This prints to the console when you Run Tests")
    return "Hello, " + name

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Solution

def solution(passcode, attempts):
    aux = 0
    for i in range(0,len(attempts)):
        if attempts[i] == passcode:
            aux = 0
        else:
            aux += 1
            if aux == 10:
                return True
    return False

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See on app.codesignal.com