题解 | #字符统计#
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
from sre_compile import isstring
string=input()
strings={}
for i in string:
if i in strings:
strings[i]+=1
else:
strings[i]=1
# 根据出现次数和 ASCII 码进行排序
# 默认升序，加负号变降序
sorted_strings = sorted(strings, key=lambda x: (-strings[x], ord(x)))
sorted_string = ''.join(sorted_strings)
print(sorted_string)
