增加两个的ArrayList到一个 [英] adding two arraylists into one

问题描述

我要检查branchList wheter具有相同的元素与否，如果相同的认沽branchList和tglList元素分开的ArrayList，并将该数组列表到另一个的ArrayList

I want to check branchList wheter has same element or not, if same put branchList and tglList element separate arraylist and put that arraylist into another arraylist,

我要的结果是BranchList1有2个数组列表，其中第一个ArrayList中包含的元素'1'和2 ArrayList中包含的元素'2'和TglList1有2个ArrayList中的元素，但我得到的是两个第一和第二阵列得到相同的值

The result I want is BranchList1 have 2 arraylist where 1st arraylist contain for element '1' and 2nd arraylist contain element '2' and TglList1 have 2 arraylist as element, but what i get is both 1st and 2nd array get same value.

如何才能做到这一点？

ArrayList branchList = new ArrayList();
    branchList.add("1");
    branchList.add("1");
    branchList.add("1");
    branchList.add("2");
    branchList.add("2");
    branchList.add("2");

    ArrayList tglList = new ArrayList();
    tglList.add("5");
    tglList.add("10");
    tglList.add("20");
    tglList.add("100");
    tglList.add("500");
    tglList.add("1000");


    ArrayList newBranchList = new ArrayList();
    ArrayList newTglList = new ArrayList();

    ArrayList BranchList1 = new ArrayList();
    ArrayList TglList1 = new ArrayList();


    ArrayList abc = new ArrayList();
    String checkBranch = new String();

    for(int i=0;i<branchList.size();i++){
        String branch = branchList.get(i).toString();
        if(i==0 || checkBranch.equals(branch)){
            newBranchList.add(branch);
            newTglList.add(tglList.get(i).toString());
        }else{
            BranchList1.add(newBranchList);
            TglList1.add(newTglList);

            newBranchList.clear();
            newTglList.clear();

            newBranchList.add(branch);
            newTglList.add(tglList.get(i).toString());
        }
        if(i==(branchList.size()-1)){
            BranchList1.add(newBranchList);
            TglList1.add(newTglList);
        }
        checkBranch = branch;
    }

}

所以预期结果如下：
BranchList1 = [[1,1,1]，[2,2,2]]
TglList1 = [[5,10,20]，[50,100,200]

so expected result is as below: BranchList1 = [ [1,1,1],[2,2,2]] TglList1 = [[5,10,20],[50,100,200]]

但我得到的是
BranchList1 = [[2,2,2]，[2,2,2]]
TglList1 = [[50,100,200]，[50,100,200]

but what i get is BranchList1 = [ [2,2,2],[2,2,2]] TglList1 = [[50,100,200],[50,100,200]]

我怎么能修改code
在此先感谢

how can i modify the code thanks in advance

推荐答案

我没有完全通过你的code阅读（我不太明白你问什么了），但如果你想合并（添加的元素） branchList 和 tglList 到 TglList1 ，试试这个：

I didn't thoroughly read through your code (and I don't quite get what you're asking for), but if you want to merge (add the elements of) branchList and tglList to TglList1, try this:

TglList1.addAll(branchList);
TglList1.add(tglList);

之后， TglList1 应该包含两个列表中的所有元素。如果你需要的资源列表进行排序，你可能想打电话给 Col​​lections.sort（TglList1）之后（只是注意，排序字符串可以放置100，2之前，由于1被词法比2小）。

After that, TglList1 should contain all elements of both lists. If you need the list to be sorted, you might want to call Collections.sort(TglList1) afterwards (just note that sorting strings might place "100" before "2", due to "1" being lexically smaller than "2").

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