统计出现次数最多的字母

代码1：

# encoding=utf-8

s="aabbccddxxxxffff"

max_occurence_times_letters = []

max_occurence_times = 0

for i in s:

if s.count(i) > max_occurence_times:

max_occurence_times_letters=[]

max_occurence_times_letters.append(i)

max_occurence_times = s.count(i)

elif s.count(i) == max_occurence_times:

max_occurence_times_letters.append(i)

print(list(set(max_occurence_times_letters)))

倒序取出每个单词首字母

代码1：

# encoding=utf-8

s = "I am a boy!"

s=s.split()

s.reverse()

result = []

for i in s:

result.append(i[0])

print(result)

代码2：

# encoding=utf-8

s = "I am a boy!"

result = []

for i in s.split()[::-1]:

result.append(i[0])

print(result)