4. Consider the following potential red-black trees (with the keys left out). We can represent black nodes by hashed lines and red nodes by no hashed lines. Which of the following are valid red-black trees? For each that is not a valid red-black tree, give a reason why it is not a red-black tree.

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
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4. Consider the following potential red-black trees (with the keys left out). We can represent
black nodes by hashed lines and red nodes by no hashed lines. Which of the following are
valid red-black trees? For each that is not a valid red-black tree, give a reason why it is not
a red-black tree.
I.
TII.
II. R
II,
I.
П.
III.
IV.
V.
Transcribed Image Text:4. Consider the following potential red-black trees (with the keys left out). We can represent black nodes by hashed lines and red nodes by no hashed lines. Which of the following are valid red-black trees? For each that is not a valid red-black tree, give a reason why it is not a red-black tree. I. TII. II. R II, I. П. III. IV. V.
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