#  请大家找出s=”aabbccddxxxxffff”中 出现次数最多的字母

# 第一种方法，字典方式：

s="aabbccddxxxxffff"

count ={}

for i in set(s):

    count[i]=s.count(i)

print(count)

# print(max(count.items(),key=lambda x:x[1])[0]）

max_value=max(count.values())

l=[]

for k,v in count.items():

    if v==max_value:

        print(k)

# 第二种方法 列表方式：

# encoding=utf-8

d = {'a':1,"b":2,"c":3,"d":4,"e":4}

max_value= d['a']

result = []

for k,v in d.items():

    # print(k,v)

    if v > max_value:

        max_value =v

        result = []

        result.append(k)

    elif v == max_value:

        result.append(k)

print(result)

# 方法三

s="aabbccddxxxxffff"

max_s_count=0

max_s_count_letters=[]

for i in s:

    if s.count(i)>max_s_count:

        max_s_count_letters=[]

        max_s_count=s.count(i)

      if s.count(i)==max_s_count:

        max_s_count_letters.append(i)

        max_s_count=s.count(i)

print(list(set(max_s_count_letters)),max_s_count)