export const useArray = <P>(persons: P[]) => {
  // hello，请把作业写在这里吧，写完记得再对照作业要求检查一下
  const [personList, setPersonList] = useState<P[]>(persons);
  return {
    value: personList,
    clear: () => {
      setPersonList([]);
    },
    removeIndex: (index: number) => {
      // 根据指定index 删除
      const newPerson = [...personList];
      newPerson.splice(index, 1);
      console.log(newPerson, personList);
      setPersonList(newPerson);
    },
    add: (item: P) => { setPersonList([ ...personList, item]) }
  }
}