0xeuclid · August 29, 2012 16:05
diff --git a/prime_2_100.rb b/prime_2_100.rb
 =begin
 If you want to find prime numbers less than N
 then use each prime number form 2 to N**0.5 to test.
 =end
 print "2, 3, 5, 7, " 

 for i in (10..100)
   if (i%2 != 0 and i%3 != 0 and i%5!=0 and i%7!=0)
      print  "#{i},  " 
   end
 end
 puts

 # Output:
 # 2, 3, 5, 7, 11,  13,  17,  19,  23,  29,  31,  37,  41,  43,  47,  53,  59,  61,  67,  71,  73,  79,  83,  89,  97,
	=begin
	If you want to find prime numbers less than N
	then use each prime number form 2 to N**0.5 to test.
	=end
	print "2, 3, 5, 7, "

	for i in (10..100)
	if (i%2 != 0 and i%3 != 0 and i%5!=0 and i%7!=0)
	print "#{i}, "
	end
	end
	puts

	# Output:
	# 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97,