Find the max consecutive integers in an array

maximum_continguous_integers.rb

# @param {Integer} num1, {Integer} num2
# @return {Integer}
def max(num1, num2)
  return num1 > num2 ? num1: num2
end

# @param {Integer[]} nums
# @return {Integer}
def max_sub_array(nums)
    return 0 if nums == nil
    
    current_max = max_so_far = nums.shift
    
    nums.each do | num| 
        current_max = max(num, current_max + num)
        max_so_far = max(max_so_far, current_max)
    end
    
    return max_so_far
end