Majority_Element1.rb

def majority_element(nums)
  countNum = Hash.new(0)
	nums.each do |i|
		countNum[i] += 1
	end 
	ind=-1
	val=0   
	countNum.each do|index, value|
		puts index
		puts value
		if (value > val)
			ind=index
			val = value
		end

	end 
	return ind
end

Majority_Element2.rb

def majority_element(nums)
  major = nil 
   count = 0
   nums.each do |i|
       if count == 0
           major = i
           count += 1
       else
           if i == major
             count+=1
           else
             count -=1
           end
       end
   end
   return major
end