java - 如何忽略列表中的重复项并改为添加一项？

Question

如果两个或多个用户具有相同的高度和体重，则忽略这些项目并添加一个项目并设置名称多个。我尝试下面的代码，但我无法删除相同的项目。

信息类

public class Info {

    public String name;
    public int height;
    public int weight;

    public Info(String name,int height, int weight) {
        this.height = height;
        this.weight = weight;
        this.name=name;
    }
}

主类

    List<Info> infoList = new ArrayList<>();
    List<Info> infoListFiltered = new ArrayList<>();

    infoList.add(new Info("a",1, 2));
    infoList.add(new Info("b",2, 2));
    infoList.add(new Info("c",1, 3));
    infoList.add(new Info("d",1, 2));
    infoList.add(new Info("e",1, 2));



    for (int i = 0; i < infoList.size(); i++) {
        for (int j = i+1; j < infoList.size(); j++) {
            if(infoList.get(i).height==infoList.get(j).height&&infoList.get(i).weight==infoList.get(j).weight) {
                infoList.get(i).name="multi";
                infoListFiltered.add(infoList.get(i));
            }else {
                infoListFiltered.add(infoList.get(i));
            }
        }
    }

有什么建议吗？

Answer 1

尝试这种方式，看看它是否适合你。

public void processData()  {
    List<Info> infoList = new ArrayList<>();
    List<Info> infoListFiltered = new ArrayList<>();
    infoList.add(new Info("a",1, 2));
    infoList.add(new Info("b",2, 2));
    infoList.add(new Info("c",1, 3));
    infoList.add(new Info("d",1, 2));
    infoList.add(new Info("e",1, 2));
    for (Info info:infoList){
        int index=getDuplicateIndex(infoListFiltered,info);
        if(index==-1){
            infoListFiltered.add(info);
        }else{
            infoListFiltered.get(index).name+=","+info.name;
        }
    }
}

private int getDuplicateIndex(List<Info> infoListFiltered,Info info){
    for (int i = 0; i < infoListFiltered.size(); i++){
        if(infoListFiltered.get(i).height==info.height && infoListFiltered.get(i).weight==info.weight){
            return i;
        }
    }
    return -1;
}