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23 lines
447 B
Rust
23 lines
447 B
Rust
// Calculates the power of 2 using a bit shift.
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// `1 << n` is equivalent to "2 to the power of n".
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fn power_of_2(n: u8) -> u64 {
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1 << n
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}
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fn main() {
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// You can optionally experiment here.
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn you_can_assert_eq() {
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assert_eq!(power_of_2(0), 1);
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assert_eq!(power_of_2(1), 2);
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assert_eq!(power_of_2(2), 4);
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assert_eq!(power_of_2(3), 8);
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}
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}
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