two_sums.rb

# @param {Integer[]} nums
# @param {Integer} target
# @return {Integer[]}
def two_sum(nums, target)
    solution = nil
    offset = 1
    while solution == nil
      nums.each_with_index do |num, i|
        if nums[i+offset] && num + nums[i+offset] == target
            solution = [i, i+offset]
        end
      end
      offset += 1
    end
    return solution
end