6914431
Description
Quiz by Mena Sargios, updated more than 1 year ago
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Created by Mena Sargios
about 8 years ago
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Question 1
Question
An AVL tree is an example of a balanced tree.
Answer
- True
- False
Question 2
Question
When the Avl is in a left left case which of these steps should you take
to correct the height of the tree ?
Answer
-
A) Right
-
B) left
-
C) Left Right
-
D) Rgiht left
Question 3
Question
Why is a balance condition imporant in binary search trees like AVL?
Answer
-
It ensures that the depth of the tree is O(logN)
-
none of the above
Question 4
Question
What is a "balanced" binary tree?
Answer
-
A) A tree whose leaves are all on the same depth
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B) A complete and full tree
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C) A tree whose left and right subtrees differ by at most 1 in depth
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D) A binary tree cannot be balanced
Question 5
Question
What’s the average case for search? Worst case?
Answer
-
O(log n); O(log n)
-
none of the above
Question 6
Question
What is an AVL tree?
Answer
-
A) a tree with lots of leaves
-
B) a self balancing binary tree
-
C) there is no such thing
-
D) a tree with the parent being the smallest value
Question 7
Question
When inserting into an AVL tree, the first step is to insert a node in its proper place according to BST rules.
After BST insertion however, the tree is not guaranteed to be an AVL tree. What is the next step in the algorithm?
Answer
-
A. if the new node is a left leaf, rotate left
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B. update the height and determine the balance of the tree recursively
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C. if the new node is a right leaf, rotate right
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D. deconstruct the tree and build it again from scratch
Question 8
Question
What makes AVL trees different from Binary Search Trees?
Answer
-
In an AVL tree every node in the tree, the height of the left and right subtrees can differ by at most one.
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none of the above
Question 9
Question
What is an AVL tree visualization?
Answer
-
A. an AVL tree is a self-balancing binary search tree.
-
B. an AVL tree is a non-balancing binary search tree.
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C. an AVL tree is a back-balancing binary search tree.
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D. an AVL tree is a front-balancing binary search tree.
Question 10
Question
An Adelson-Velskii Landis (AVL) tree is a self-balancing Binary Search Tree(BST) that maintains it's height to be O(log N) when having N vertices in the AVL tree.
Answer
- True
- False
Question 11
Question
When rotating an AVL tree which of the following are a case where you would need to rotate?
Answer
-
A. left,left
-
B. left,right
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C. right,right
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D. right,left
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E. All of the above
Question 12
Question
In average case, what is the efficiency of insertion of an AVL tree
Answer
-
A. logn
-
B. nlogn
-
C. n
-
D. n2
Question 13
Question
What do AVL trees do?
Answer
-
They automatically readjust to keep the tree more balanced with a lower height. This reduces the worst-case scenario of searching.
-
none of the above
Question 14
Question
What is the worst case possible height of AVL tree?
Answer
-
A.n
-
B.n^2
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C.1.44 log n
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D.n+2
Question 15
Question
What is the term for AVL tree balancing?
Answer
-
zig-zag
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none of the above
Question 16
Question
What is the biggest height difference an AVL tree can have without rotating?
Answer
-
At most the difference can be a height of 1.
-
none of the above
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