/Ruby/Number of trailing zeros in a factorial of a number.

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);  # 7

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