用伪代码解释B-Tree

当然，我会为你提供详细的伪代码解释B-Tree算法的过程。下面是代码示例:

B-Tree Algorithm

class Node {
    int n; // Number of keys in the node
    boolean leaf; // True if it's a leaf node, false otherwise
    int[] keys; // Keys stored in the node
    Node[] children; // Pointers to the children nodes
}

// Insert a new key into the B-Tree
public void insert(Node root, int key) {
    Node r = root;
    if (r.n == 2 * t - 1) { // The root is full, create a new root
        Node s = new Node();
        root = s;
        s.leaf = false;
        s.n = 0;
        s.children[0] = r;
        splitChild(s, 1, r);
        insertNonFull(s, key);
    } else {
        insertNonFull(r, key);
    }
}

// Split a full child node into two non-full child nodes
private void splitChild(Node x, int i, Node y) {
    Node z = new Node();
    z.leaf = y.leaf;
    z.n = t - 1;
    for (int j = 0; j < t - 1; j++) { // Copy the keys of y to z
        z.keys[j] = y.keys[j + t];
    }
    if (!y.leaf) { // If y is not a leaf, copy its children to z
        for (int j = 0; j < t; j++) {
            z.children[j] = y.children[j + t];
        }
    }
    y.n = t - 1;
    for (int j = x.n; j >= i + 1; j--) { // Move x's children to the right
        x.children[j + 1] = x.children[j];
    }
    x.children[i + 1] = z; // Insert z as x's child
    for (int j = x.n - 1; j >= i; j--) { // Move x's keys to the right
        x.keys[j + 1] = x.keys[j];
    }
    x.keys[i] = y.keys[t - 1]; // Set the key of y as x's key
    x.n++; // Increment x's key count
}

// Insert a key into a non-full node
private void insertNonFull(Node x, int key) {
    int i = x.n - 1;
    if (x.leaf) {
        while (i >= 0 && key < x.keys[i]) { // Find the position to insert the key
            x.keys[i + 1] = x.keys[i];
            i--;
        }
        x.keys[i + 1] = key;
        x.n++;
    } else {
        while (i >= 0 && key < x.keys[i]) { // Find the child node to insert the key
            i--;
        }
        i++;
        if (x.children[i].n == 2 * t - 1) { // If the child node is full, split it
            splitChild(x, i, x.children[i]);
            if (key > x.keys[i]) { // Choose which child to insert the key
                i++;
            }
        }
        insertNonFull(x.children[i], key); // Recursively insert the key
    }
}

上面的代码是一个经典的B-Tree算法的伪代码，可以将其用任何一种编程语言实现。该算法支持高效地插入、查找和删除数据，适用于大型数据存储。