题解 | #字符统计#
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
import sys
str=input()
dic=dict()
set=set(str)
a=list(set)
a.sort()
for i in set:
dic[i]=str.count(i)
for j in range(max(dic.values()),-1,-1):
for i in a:
if dic[i]==j:
print(i,end='')
