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impl Solution {
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  pub fn strong_password_checker_ii(password: String) -> bool {
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    if password.len() < 8 {
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      return false;
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    }
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    let mut res = 0;
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    let mut prev_char = ' ';
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    for c in password.chars() {
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      match c == prev_char {
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        true => return false,
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        _ if c.is_ascii_lowercase() => res |= 0b1,
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        _ if c.is_ascii_uppercase() => res |= 0b10,
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        _ if c.is_ascii_digit() => res |= 0b100,
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        _ => res |= 0b1000, // "!@#$%^&*()-+"
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      }
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      prev_char = c;
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    }
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    res == 0b1111
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  }
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}