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2299. Strong Password Checker II 👍

  • Time: $O(n)$
  • Space: $O(1)$
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class Solution {
 public:
  bool strongPasswordCheckerII(string password) {
    if (password.length() < 8)
      return false;

    const bool hasLowerCase = any_of(begin(password), end(password),
                                     [](const char c) { return islower(c); });
    if (!hasLowerCase)
      return false;

    const bool hasUpperCase = any_of(begin(password), end(password),
                                     [](const char c) { return isupper(c); });
    if (!hasUpperCase)
      return false;

    const bool hasDigit = any_of(begin(password), end(password),
                                 [](const char c) { return isdigit(c); });
    if (!hasDigit)
      return false;

    const bool hasSpecial =
        any_of(begin(password), end(password), [](const char c) {
          return string("!@#$%^&*()-+").find(c) != string::npos;
        });
    if (!hasSpecial)
      return false;

    for (int i = 1; i < password.length(); ++i)
      if (password[i] == password[i - 1])
        return false;
    return true;
  }
};

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class Solution {
  public boolean strongPasswordCheckerII(String password) {
    if (password.length() < 8)
      return false;

    final boolean hasLowerCase = password.chars().anyMatch(c -> Character.isLowerCase(c));
    if (!hasLowerCase)
      return false;

    final boolean hasUpperCase = password.chars().anyMatch(c -> Character.isUpperCase(c));
    if (!hasUpperCase)
      return false;

    final boolean hasDigit = password.chars().anyMatch(c -> Character.isDigit(c));
    if (!hasDigit)
      return false;

    final boolean hasSpecial = password.chars().anyMatch(c -> "!@#$%^&*()-+".indexOf(c) != -1);
    if (!hasSpecial)
      return false;

    for (int i = 1; i < password.length(); ++i)
      if (password.charAt(i) == password.charAt(i - 1))
        return false;
    return true;
  }
}

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class Solution:
  def strongPasswordCheckerII(self, password: str) -> bool:
    if len(password) < 8:
      return False
    if not any(c.islower() for c in password):
      return False
    if not any(c.isupper() for c in password):
      return False
    if not any(c.isdigit() for c in password):
      return False
    if not any("!@#$%^&*()-+".find(c) != -1 for c in password):
      return False
    return all(a != b for a, b in zip(password, password[1:]))