l1=System.(); (liststr.size() > ) { Collections.(liststr,Comparator<String>(){ compare(String arg0, String arg1) { BigDecimal(arg1.split()[]).compareTo(BigDecimal(arg0.split()[])); } }); }
list裏面的數據類型是String ,數據格式爲《人名,金額》,方式爲倒序ide