题解 | 字符统计
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
arr = list(input())
set_arr = set(arr)
ll = []
for i in set_arr:
ll.append([i,arr.count(i),ord(i)])
sort_ll = sorted(ll,key=lambda x:[-x[1],x[2]])
res = ''
for i in sort_ll:
res += i[0]
print(res)
