I don’t know why the error mentioned below happens. It is caused because I use a variable and summing it with a number inside the brackets. How can I fix it?
Any help would be greatly appreciated. I have spent much time searching for the answer but I couldn’t find it. Thank so much!
The Code is this:
def two_sum(nums) i = 0 while i < nums.length b = i + 1 while b <= nums.length if nums[i] + nums[b] == 0 puts("we need to store this numbers") elsif puts("It doesn't match") end i += 1 end end end # These are tests to check that your code is working. After writing # your solution, they should all print true. puts( 'two_sum([1, 3, 5, -3]) == [1, 3]: ' + (two_sum([1, 3, 5, -3]) == [1, 3]).to_s ) puts( 'two_sum([1, 3, 5]) == nil: ' + (two_sum([1, 3, 5]) == nil).to_s )
08-two-sum.rb:06:in `two_sum': undefined method `+' for nil:NilClass (NoMethodError) from 08-two-sum.rb:23:in `<main>'