class PrimeNumber
Public Class Methods
check_prime(n)
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# File lib/prime_number.rb, line 3 def self.check_prime(n) return true if n == 2 return false if n <= 1 || n % 2 == 0 sqrt = Math.sqrt(n) i = 3 while(i <= sqrt) return false if(n % i == 0) i = i + 2 end return true end