摘要： 需求：现有这样一套原始数据{“A”,"B","C","D","B","A","B","C","A","B","D","D"}.要求将此数据组织成为双列表形式显示，即将元素相同的数据分为一组，即{["A","A","A"],["B","B","B"," 阅读全文