题解 | #字符统计#
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
a=input()
s=sorted(set(a))
ss=sorted(s,key=lambda x:a.count(x),reverse=1)
print(''.join(ss))
字符统计
https://www.nowcoder.com/practice/c1f9561de1e240099bdb904765da9ad0
a=input()
s=sorted(set(a))
ss=sorted(s,key=lambda x:a.count(x),reverse=1)
print(''.join(ss))
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