Write a Ruby program to check whether a given value appears everywhere in a given array

def check_array(nums)
   i = 0;
   val = 3
   while i < nums.length
       if(nums[i] != val && nums[i+1] != val)
			return false
		end	
	i = i + 1
   end
   return true
end
print check_array([3, 7, 3, 3]),"\n"
print check_array([2, 8, 2, 9]),"\n"
print check_array([3, 8, 5, 4, 3, 7]),"\n"