[LeetCode] Rearrange String k Distance Apart 按距离为k隔离重排字符串
Givenanon-emptystringstrandanintegerk,rearrangethestringsuchthatthesamecharactersareatleastdistancekfromeachother.Allinputstringsaregiveninlowercaseletters.Ifitisnotpossibletorearrangethestring,retur