"Java实现:计算特殊二叉树根节点值"
解析:首先需要创建一个二叉树节点类,包含值、左子节点和右子节点。然后根据输入的父节点数组构建二叉树。接着遍历二叉树,根据节点的颜色进行相应的运算。最后输出根节点的值。
代码如下:
```java
import java.util.Scanner;
class TreeNode {
int val;
TreeNode left;
TreeNode right;
TreeNode(int val) {
this.val = val;
}
}
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int[] p = new int[n];
for (int i = 1; i < n; i++) {
p[i] = sc.nextInt();
}
int[] c = new int[n];
for (int i = 0; i < n; i++) {
c[i] = sc.nextInt();
}
sc.close();
TreeNode root = buildTree(p, c);
System.out.println(root.val);
}
public static TreeNode buildTree(int[] p, int[] c) {
TreeNode root = new TreeNode(1);
TreeNode node = root;
for (int i = 2; i <= p.length; i++) {
if (c[i] == 1) {
if (node.left == null) {
node.left = new TreeNode(p[i]);
} else {
node.right = new TreeNode(p[i]);
}
node = node.left; // 如果是红色,则向左子树移动
} else {
if (node.right == null) {
node.right = new TreeNode(p[i]);
} else {
node.left = new TreeNode(p[i]);
}
node = node.right; // 如果是蓝色,则向右子树移动
}
}
return root;
}
}
```
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