number of trailing zeros in a factorial of a number.
// Number of trailing zeros in a factorial of a number
fn zeros(mut n: u64) -> u64 {
let mut zeros = 0;
while n > 0 {
n /= 5;
zeros += n;
}
zeros
}
fn main() {
println!("Number of trailing zeros = {} ", zeros(14)); // 2
println!("Number of trailing zeros = {} ", zeros(30)); // 7
}number of trailing zeros in a factorial of a number.
# Number of trailing zeros in a factorial of a number
def zeros(n)
zeros = 0
while (n > 0)
n = (n / 5).floor
zeros += n
end
zeros
end
print "Number of trailing zeros = ", zeros(6); # 1
print "\nNumber of trailing zeros = ", zeros(30); # 7Copyright © 2021 Codeinu
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