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正在从地理学角度排序一个矩阵列表 < 节点> 吗?
原标题:Sorting an ArrayList<Node> lexicographically?

我想排序一个有节点类型( 像这样) 的阵列列表 :

 [[country1: null], [name2: null], [city3: null], [region4: null], [name6: null]]

要获取节点名称 I 的值, 请使用函数获取节点Name () so

 ArrayNode.get(0).getNodeName()  // return country1

我调查了"坚固"的回忆.sort 但我不知道我会怎么做,提前感谢u。

最佳回答

使用 < a href=" "http://docs.oracle.com/javase/6/docs/api/java/util/Comparator.html" rel=“no follow” >Comparator 来定义比较逻辑。

类似的东西:

ArrayList<Node> nodes;
        Collections.sort(nodes, new Comparator<Node>() {
            @Override
            public int compare(Node o1, Node o2) {
                return o1.getNodeName().compareTo(o2.getNodeName());
            }
        });
问题回答

我想你们要的是 Java. util. comparator. 你可以用它来收藏. sort.

创建 concomparator , 以节点名称排序, 然后创建 Colections.sort( 列表, 比较员)





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