string - 与字符串操作不同

Question

我从事 Flutter 项目。我有关于字符串操作的查询。我存储了一些值，如下所示

String a="31,31,31,31,31,31,31,41,41,41,41,41,41,41,41,41,41,53,53,53,53,53,53,53,53"

我在查询中有类似 Distinct 的输出

a="31,41,53"

请问如何实现这个功能

提前致谢 萨提什

Answer 1

void main() {
  String a =
      "31,31,31,31,31,31,31,41,41,41,41,41,41,41,41,41,41,53,53,53,53,53,53,53,53";
  var values = a.split(',');
  var result = Set.from(values).join(',');
  print(result);
}

结果:

31,41,53