Ruby:如何查找出现次数最多的数组中的项？

def most_frequent(array)
  counts = array.inject(Hash.new(0)) { |h, e| h[e] += 1; h }
  max_count = counts.values.max
  counts.select { |k, v| v == max_count }.keys
end

# 示例用法
array = [1, 2, 3, 2, 1, 3, 1, 1, 2, 3, 3, 3]
result = most_frequent(array)
puts "出现次数最多的项是：#{result.inspect}"