I need help implementing the method isBinaryTree in JAVA. To check if an array encodes a binary tree .

CODE:

import java.util.List;

import java.util.ArrayList;

public class ArrayHeapChecker {

/*

* This nested class contains a completed implementation of Entry.

*

* You do not need to edit this class.

*/

public static class Entry, V> {

private K key;

private V value;

public Entry(K key, V value) {

this.key = key;

this.value = value;

}

public K getKey() {return key;}

public V getValue() {return value;}

public void setKey(K key) {this.key = key;}

public void setValue(V value) {this.value = value;}

}

/**

* Checks if the given array is a representation of a binary tree.

*

* @param entries

* array of entries to be tested

*

* @return true if the input array encodes a binary tree, false otherwise

*/

public static , V> boolean isBinaryTree(List> entries) {

// TODO: implement this

return true;

}