Question

好的，所以我想以这样的方式合并这些数组列表，使它们相互插入并创建下面的句子。输出：“这是我正在尝试重建的句子”

List<String> list1 = Arrays.asList(This, , , , , , , , reconstruct);
List<String> list2 = Arrays.asList (, is, the, , , , trying, ,);
List<String> list3 = Arrays.asList(, , ,sentence, that, I'm, , to,);

我尝试使用list.addall（list2），但它只是将每个列表放在另一个旁边。如何整合列表？

Answer 1

您可以拥有以下内容

    List<String> list1 = Arrays.asList("This", "", "", "", "", "", "", "", " reconstruct");
    List<String> list2 = Arrays.asList("", " is", " the", "", "", "", " trying", "", "");
    List<String> list3 = Arrays.asList("", "", "", " sentence", " that", " I'm", "", " to", "");

    StringBuilder sentense = new StringBuilder();
    for (int i = 0; i < list1.size(); i++) {
        sentense.append(list1.get(i)).append(list2.get(i)).append(list3.get(i));
    }
    System.out.print(sentense.toString());

Answer 2

假设给定列表具有相同的大小。您可以使用与此类似的代码。

  for(int i =0; i<list1.size();i++){
    if(list1.get(i)==""){

    //replace with sentence from other lists 
        if(list2.get(i)!=""){
           list1.add(i,list2.get(i));
        }
        else if(list3.get(i)!=""){
           list1.add(i,list3.get(i));
        }
    }
  }

Answer 3

以下代码仅在您确定单词的每个位置都是唯一的时才有效：

List<String> myList = new ArrayList<String>();
String txt = "";
for (int i = 0; i < list1.size(); i++) {
    txt = list1.get(i) + list2.get(i) + list3.get(i);
    myList.add(txt);
}

如果要创建新列表，请执行以下操作：

<h:form id="searchForm">
  <h:selectBooleanCheckbox binding="#{searchCheckbox}" value="true" pt:data-toggle="toggle">
    <f:ajax event="change" render="searchForm:searchPanel" />
  </h:selectBooleanCheckbox>
  <h:panelGroup id="searchPanel">
    <h:panelGroup rendered="#{searchCheckbox.value}">
      aaa
    </h:panelGroup>
    <h:panelGroup rendered="#{not searchCheckbox.value}">
      bbb
    </h:panelGroup>
  </h:panelGroup>
</h:form>

Answer 4

你可以试试这个。我希望这可以帮助

List<String> list1 = Arrays.asList("This", "", "", "", "", "", "", "", "reconstruct");
    List<String> list2 = Arrays.asList ("", "is", "the", "", "", "", "trying", "","");
    List<String> list3 = Arrays.asList("", "", "","sentence", "that", "Im", "", "to","");
    List<String> mergedValue = new ArrayList<>();

    for(int i = 0; i<list1.size();i++){
        if(list1.get(i)!=""){
            mergedValue.add(list1.get(i));
        }
        if(list2.get(i)!=""){
            mergedValue.add(list2.get(i));
        }
        if(list3.get(i)!=""){
            mergedValue.add(list3.get(i));
        }
    }

将几个Arraylists <string>合并为一个

4 个答案: