Java生成股权穿透图

生成股权穿透图需要先构建出股权关系树，然后将树转换为穿透图。下面是一个简单的Java代码示例，用于生成股权穿透图：

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class EquityTree {
    private String name;
    private double equity;
    private List<EquityTree> children;

    public EquityTree(String name, double equity) {
        this.name = name;
        this.equity = equity;
        this.children = new ArrayList<>();
    }

    public void addChild(EquityTree child) {
        this.children.add(child);
    }

    public String getName() {
        return name;
    }

    public double getEquity() {
        return equity;
    }

    public List<EquityTree> getChildren() {
        return children;
    }

    // 将股权关系树转换为穿透图
    public HashMap<String, Double> toEquityMap() {
        HashMap<String, Double> map = new HashMap<>();
        map.put(this.name, this.equity);
        for (EquityTree child : this.children) {
            HashMap<String, Double> childMap = child.toEquityMap();
            for (String key : childMap.keySet()) {
                double childEquity = childMap.get(key);
                if (map.containsKey(key)) {
                    map.put(key, map.get(key) + childEquity);
                } else {
                    map.put(key, childEquity);
                }
            }
        }
        return map;
    }

    public static void main(String[] args) {
        // 构建股权关系树
        EquityTree root = new EquityTree("A", 1.0);
        EquityTree b = new EquityTree("B", 0.5);
        EquityTree c = new EquityTree("C", 0.3);
        EquityTree d = new EquityTree("D", 0.2);
        EquityTree e = new EquityTree("E", 0.1);
        root.addChild(b);
        root.addChild(c);
        b.addChild(d);
        c.addChild(e);

        // 将树转换为穿透图
        HashMap<String, Double> equityMap = root.toEquityMap();
        for (String key : equityMap.keySet()) {
            System.out.println(key + ": " + equityMap.get(key));
        }
    }
}

在这个示例中，我们首先构建了一个简单的股权关系树，然后将其转换为穿透图。`toEquityMap`方法递归遍历整个树，并将每个节点的股权值累加到其所有祖先节点中，最终返回一个HashMap，其中键是公司名称，值是股权比例。