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Changed to use inclusive range operator (#632)
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@ -9,7 +9,7 @@ use num::bigint::{BigInt, ToBigInt};
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fn factorial(x: i32) -> BigInt {
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if let Some(mut factorial) = 1.to_bigint() {
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for i in 1..(x+1) {
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for i in 1..=x {
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factorial = factorial * i;
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}
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factorial
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