值个数最大的变量

def find_max_count_variable(data):
    max_count = 0
    max_variable = None
    count_dict = {}

    for variable in data:
        if variable in count_dict:
            count_dict[variable] += 1
        else:
            count_dict[variable] = 1

        if count_dict[variable] > max_count:
            max_count = count_dict[variable]
            max_variable = variable

    return max_variable, max_count

# 示例数据集
data = [1, 2, 3, 2, 2, 3, 4, 4, 4, 4]

# 找出值个数最大的变量
max_variable, max_count = find_max_count_variable(data)

print("值个数最大的变量是:", max_variable)
print("该变量出现的次数是:", max_count)

值个数最大的变量是: 4
该变量出现的次数是: 4