Responses for exercises in Exercism.
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pub fn is_armstrong_number(num: u32) -> bool { |
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let str_num = num.to_string(); |
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let num_digits = str_num.len() as u32; |
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num == str_num |
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.chars() |
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.map(|x| x.to_digit(10).unwrap()) |
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.map(|n| n.pow(num_digits)) |
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.sum() |
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}
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