tring[] row1 = { "1", "1", "2" };
String[] row2 = { "1", "1", "2" };
String[] row3 = { "1", "1", "2" };
String[] row4 = { "2", "1", "2" };
String[] row5 = { "2", "1", "2" };
String[] row6 = { "3", "1", "2" };
String[][] data = new String[][] { row0, row1, row2, row3, row4, row5,
row6 };
List<String[][]> groupList = groupByName(data, 0);
print2ArrayList(groupList);
// 预期
// listIndex0:String[][] _0={{row0}};
// listIndex1:String[][] _0={{row1,row2,row3}};
// listIndex2:String[][] _0={{row4,row5}};
// listIndex3:String[][] _0={{row6}};
}
/**
- 按照指定列分组数据
- @param data 要分组的数据
- @param col 列索引
-
@return 分组后的数据
*/
public static List groupByName(String[][] data, int col) {return null;
}
/**
- 打印二维列表数组
- @param groupList */ public static void print2ArrayList(List groupList) {
}
这两个方法怎么写
