Question: Can someone please help me with implementing this class of a B+ tree? Help with the algorithm for this class to get me on the
Can someone please help me with implementing this class of a B+ tree? Help with the algorithm for this class to get me on the right track would be helpful too.
Any help that can be provided is much appreciated, thanks! -------------------------------------------------------------------------------------------------------- import java.io.RandomAccessFile;
import java.util.LinkedList;
public class BTree {
RandomAccessFile f;
int order;
int blockSize;
long root;
long free;
//add instance variables as needed.
private class BTreeNode {
private int count;
private int keys[];
private long children[];
private long address; //the address of the node in the file
//constructors and other method
public BTreeNode() {
}
public BTreeNode(long addr) {
}
}
public BTree(String filename, int bsize) {
//bsize is the block size. This value is used to calculate the order
//of the B+Tree
//all B+Tree nodes will use bsize bytes
//makes a new B+tree
}
public BTree(String filename) {
//open an existing B+Tree
}
public boolean insert(int key, long addr) {
/*
If key is not a duplicate add, key to the B+tree
addr (in DBTable) is the address of the row that contains the key
return true if the key is added
return false if the key is a duplicate
*/
return false;
}
public long remove(int key) {
/*
If the key is in the Btree, remove the key and return the address of the
row return 0 if the key is not found in the B+tree
*/
return 0;
}
public long search(int k) {
/*
This is an equality search
If the key is found return the address of the row with the key
otherwise return 0
*/
return 0;
}
public LinkedList
//PRE: low <= high
/*
return a list of row addresses for all keys in the range low to high inclusive
return an empty list when no keys are in the range
*/
LinkedList
return list;
}
public void print() {
//print the B+Tree to standard output
//print one node per line
//This method can be helpful for debugging
}
public void close() {
//close the B+tree. The tree should not be accessed after close is called
}
}
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