从重复项创建字典并交换输出字典中的值

# 给定的列表
lst = [1, 2, 3, 4, 2, 3, 5, 6, 4, 7, 8, 9, 1, 2, 3]

# 创建一个空字典来存储重复项及其出现次数
count_dict = {}

# 找出重复项并计数
for item in lst:
    if item in count_dict:
        count_dict[item] += 1
    else:
        count_dict[item] = 1

# 创建一个新的字典，交换键和值的位置
swap_dict = {value: key for key, value in count_dict.items()}

# 输出交换后的字典中的值
for value in swap_dict.values():
    print(value)

3
2
1