trailing zeroes in factorial
#include <iostream>
using namespace std;
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int t;
cin>>t;
while(t--)
{
int n;
cin>>n;
int res=0;
for(int i=5;i<=n;i=i*5)
{
res=res+n/i;
}
cout<<res<<endl;
}
return 0;
}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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