# 1. 实现一个整数加法计算器：（4分）
# 如：content = input(‘请输入内容:’)  # 如用户输入：5+8-7....(最少输入两个数进行计算)，将最后的计算结果添加到此字典中(替换None)：
# dic={‘最终计算结果’:None}
# # dic={"最终计算结果":None}
# # sum = 0
# # content = input("请输入内容:")
# # content_new = content.strip().replace("-","+-").split("+")
# # for i in content_new:
# #     sum += int(i)
# #     dic["最终计算结果"] = sum
# # print(dic)
#



# 2. ⻋牌区域划分, 现给出以下⻋牌. 根据⻋牌的信息, 分析出各省的⻋牌持有量. (6分)
#
# ```python
# cars = ['鲁A32444','鲁B12333','京B8989M','⿊C49678','⿊C46555','沪 B25041'.....]
# locals = {'沪':'上海', '⿊':'⿊⻰江', '鲁':'⼭东', '鄂':'湖北', '湘':'湖南'.....}
# 结果: {'⿊⻰江':2, '⼭东': 2, '北京': 1}
# ```
# cars = ['鲁A32444','鲁B12333','京B8989M','⿊C49678','⿊C46555','沪 B25041']
# locals = {'沪':'上海', '⿊':'⿊⻰江', '鲁':'⼭东', '鄂':'湖北', '湘':'湖南'}
# dic = {}
# for i in cars:
#     if i[0] in list(locals):
#         dic[locals[i[0]]] = dic.setdefault(locals[i[0]],0) +1
# print(dic)

# 3. 将列表内的元素,根据位数合并成字典 (5分)
#
# ```python
# lst = [1,2,3,4,12,23,34,45,111,222,333,1234,2345,34567,456789]
# # 输出如下字典:
# {
#   1:[1,2,3,4],
#   2:[12,23,34,45],
#   3:[111,222,333],
#   4:[1234,2345],
#   5:[34567],
#   6:[456789]
# }
# ```
# yang = {}
# for i in lst:
#     if [len(str(i))].append(i):
#         yang[len(str(i))].append(i)
#     else:
#         yang[len(str(i))]=i
# print(yang)