8 15 root 10 16 11 1 12 6 17 13 14 18 19 23 20 21 22 24 25 Suppose we implement contains(x) using the basic recursive traversal approach as a starting point. A private recursive helper method would look like static boolean helper (target, node) if node is null then return false if node.value== target then return true findLeft := helper (target, node.left) findRight := helper (target, node.right) return findLeft OR findRight If we call helper(3, root) (using the tree above), how many times is helper called in total (including this first call)?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Consider the following binary tree: (this is NOT a binary search tree)
root
6
8
9
15
10
16
11
12
17
13
14
18 19
23
20
21
22
24
25
Suppose we implement contains(x) using the basic recursive traversal approach as a
starting point. A private recursive helper method would look like
static boolean helper (target, node)
if node is null then
return false
if node.value== target then
return true
findLeft := helper (target, node.left)
findRight := helper (target, node.right)
return findLeft OR findRight
If we call helper(3, root) (using the tree above), how many times is helper called in
total (including this first call)?
A
ENG
☎ ♡
3:25 PM
2022-04-28
Transcribed Image Text:Consider the following binary tree: (this is NOT a binary search tree) root 6 8 9 15 10 16 11 12 17 13 14 18 19 23 20 21 22 24 25 Suppose we implement contains(x) using the basic recursive traversal approach as a starting point. A private recursive helper method would look like static boolean helper (target, node) if node is null then return false if node.value== target then return true findLeft := helper (target, node.left) findRight := helper (target, node.right) return findLeft OR findRight If we call helper(3, root) (using the tree above), how many times is helper called in total (including this first call)? A ENG ☎ ♡ 3:25 PM 2022-04-28
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