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how to find factorial using def?

14th Dec 2017, 4:25 AM
rakibul
7 Answers
+ 10
def factorial(n) (1..n).inject(:*) || 1 end puts factorial(50)
14th Dec 2017, 5:16 AM
GAWEN STEASY
GAWEN STEASY - avatar
+ 8
@Mickel thnx I like Ruby so much so just made like that šŸ˜ŠšŸ˜Š
14th Dec 2017, 5:22 AM
GAWEN STEASY
GAWEN STEASY - avatar
+ 8
def fact(n) (1..n).inject(1) {|r,i| r*i } end fact(6) => 720 @Bool you can do like this too šŸ˜ŠšŸ˜Š
15th Dec 2017, 5:17 AM
GAWEN STEASY
GAWEN STEASY - avatar
+ 5
thanku Gwen sorry for being so straight
15th Dec 2017, 6:16 AM
Ankush Kumar
Ankush Kumar - avatar
+ 4
šŸ˜ŠšŸ˜Š
15th Dec 2017, 5:48 AM
Ankush Kumar
Ankush Kumar - avatar
+ 3
@Gawen I've always liked that way of writing the factorial in Ruby
14th Dec 2017, 5:19 AM
Mickel
Mickel - avatar
+ 3
yeh @gwen is right, you can check it here same thing is covered here what gwen said and not just that but you can find more simple way thanku https://www.ruby-forum.com/topic/105085
15th Dec 2017, 5:12 AM
Ankush Kumar
Ankush Kumar - avatar