In this problem, you will write someJava code for a simple operation on binary s

Question

In this problem, you will write someJava code for a simple operation on binary search trees where keys are integers. Assume you already have the following code:

public class BinaryNode{

public int key;

public BinaryNode left;

public BinaryNode right;

}

Write a method in Java that takes as input a binary search tree, and two integer values, lower and upper, which are ordered so that lower upper, and prints all elements in the binary search tree such that lower key upper. Note: Your program should run in O(K + log N) average time, where K is the number of keys printed. Use the following method signature:

static void printRange(int lower, int upper, BinaryNode t)

Explanation / Answer

static void printRange(int lower, int upper, BinaryNode t) {
// if tree is null then just return
       if (t == null) {
return;
}
if (lower < t.key) {
printRange(lower, upper, t.left);
}
if (upper > t.key) {
printRange(lower, upper,t.right);
}
       if (lower <= t.key && upper >= t.key) {
System.out.print(t.key + " ");
}
}

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