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  1. def fib(n)
  2. 	return case(n)
  3. 	when 1; 1
  4. 	when 0; 0
  5. 	else fib(n-1)+fib(n-2)
  6. 	end
  7. end
  8. n=4; sum=0; 1.upto(n) {|x| sum+=fib(x);puts "#{x} = #{fib(x)}"}
  9. puts "SUM = #{sum}"
Success #stdin #stdout 0s 4760KB
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Standard input is empty
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1 = 1
2 = 1
3 = 2
4 = 3
SUM = 7
https://ideone.com/6Lc0z
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
public

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