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Java Coding Problems - Second Edition

You're reading from  Java Coding Problems - Second Edition

Product type Book
Published in Mar 2024
Publisher Packt
ISBN-13 9781837633944
Pages 798 pages
Edition 2nd Edition
Languages
Author (1):
Anghel Leonard Anghel Leonard
Profile icon Anghel Leonard

Table of Contents (16) Chapters

Preface 1. Text Blocks, Locales, Numbers, and Math 2. Objects, Immutability, Switch Expressions, and Pattern Matching 3. Working with Date and Time 4. Records and Record Patterns 5. Arrays, Collections, and Data Structures 6. Java I/O: Context-Specific Deserialization Filters 7. Foreign (Function) Memory API 8. Sealed and Hidden Classes 9. Functional Style Programming – Extending APIs 10. Concurrency – Virtual Threads and Structured Concurrency 11. Concurrency ‒ Virtual Threads and Structured Concurrency: Diving Deeper 12. Garbage Collectors and Dynamic CDS Archives 13. Socket API and Simple Web Server 14. Other Books You May Enjoy
15. Index

22. Computing the largest/smallest value that is less/greater than or equal to the algebraic quotient

By the largest value, we understand the value closest to positive infinity, while by the smallest value, we understand the value closest to negative infinity.

Computing the largest value that is less than or equal to the algebraic quotient can be done, starting with JDK 8, via floorDiv(int x, int y) and floorDiv(long x, long y). Starting with JDK 9, we also have floorDiv(long x, int y).

Computing the smallest value that is greater than or equal to the algebraic quotient can be done, starting with JDK 18, via ceilDiv(int x, int y), ceilDiv(long x, int y), and ceilDiv(long x, long y).

However, none of these functions are capable of managing the corner case divisions presented in the previous problem, Integer.MIN_VALUE/-1 and Long.MIN_VALUE/-1:

int x = Integer.MIN_VALUE; // or, x = Long.MIN_VALUE
Math.floorDiv(x, -1); // -2,147,483,648
Math.ceilDiv(x, -1);  // -2,147...
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