Home Java javaTutorial How to express the range of a number in java

How to express the range of a number in java

Apr 27, 2024 am 01:42 AM

The methods for expressing numerical ranges in Java are: 1. Closed interval [a, b]; 2. Open interval (a, b); 3. Semi-open interval [a, b) or (a, b ]; 4. Unbounded intervals (-∞, ∞). Closed intervals can be efficiently searched using Arrays.binarySearch(), and open/semi-open intervals can be sorted and binary searched using Arrays.sort().

How to express the range of a number in java##Representing a range of numbers in Java

There are many ways to represent a range of numbers in Java:

1. Use closed intervals:

Use [

and

] to represent a closed interval, including endpoints:

int[] range = {1, 5}; // 表示范围 [1, 5]
Copy after login
2. Use open intervals:

Use (

and

) to represent an open interval, excluding endpoints:

int[] range = (1, 5); // 表示范围 (1, 5)
Copy after login
3. Use half-open intervals:

Use [

and

) or ( and ] to represent half-open intervals Open intervals, including one endpoint and excluding the other:

int[] range = [1, 5); // 表示范围 [1, 5)
int[] range = (1, 5]; // 表示范围 (1, 5]
Copy after login
4. Use unbounded intervals:

Use -∞

and

represents an unbounded interval, including all numbers:

int[] range = (-∞, ∞); // 表示范围 (-∞, ∞)
Copy after login
Note:

For closed intervals, you can use

Arrays. The binarySearch()
    method efficiently searches for an element.
  • For open intervals and semi-open intervals, you can use the Arrays.sort()
  • method to sort the array, and then use binary search to find the element. .
  • Unbounded intervals are often used in theoretical mathematics and are rarely used in practical applications.

The above is the detailed content of How to express the range of a number in java. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

In Java remote debugging, how to correctly obtain constant values ​​on remote servers? In Java remote debugging, how to correctly obtain constant values ​​on remote servers? Apr 19, 2025 pm 01:54 PM

Questions and Answers about constant acquisition in Java Remote Debugging When using Java for remote debugging, many developers may encounter some difficult phenomena. It...

How to choose Java project management tools when learning back-end development? How to choose Java project management tools when learning back-end development? Apr 19, 2025 pm 02:15 PM

Confused with choosing Java project management tools for beginners. For those who are just beginning to learn backend development, choosing the right project management tools is crucial...

Ultimate consistency in distributed systems: how to apply and how to compensate for data inconsistencies? Ultimate consistency in distributed systems: how to apply and how to compensate for data inconsistencies? Apr 19, 2025 pm 02:24 PM

Exploring the application of ultimate consistency in distributed systems Distributed transaction processing has always been a problem in distributed system architecture. To solve the problem...

How to restrict access to specific interfaces of nested H5 pages through OAuth2.0's scope mechanism? How to restrict access to specific interfaces of nested H5 pages through OAuth2.0's scope mechanism? Apr 19, 2025 pm 02:30 PM

How to use OAuth2.0's access_token to achieve control of interface access permissions? In the application of OAuth2.0, how to ensure that the...

Why does the Python script not be found when submitting a PyFlink job on YARN? Why does the Python script not be found when submitting a PyFlink job on YARN? Apr 19, 2025 pm 02:06 PM

Analysis of the reason why Python script cannot be found when submitting a PyFlink job on YARN When you try to submit a PyFlink job through YARN, you may encounter...

How to dynamically modify the savePath parameter of @Excel annotation in easypoi when project starts in Java? How to dynamically modify the savePath parameter of @Excel annotation in easypoi when project starts in Java? Apr 19, 2025 pm 02:09 PM

How to dynamically configure the parameters of entity class annotations in Java During the development process, we often encounter the need to dynamically configure the annotation parameters according to different environments...

When Tomcat loads Spring-Web modules, does the SPI mechanism really destroy the visibility principle of Java class loaders? When Tomcat loads Spring-Web modules, does the SPI mechanism really destroy the visibility principle of Java class loaders? Apr 19, 2025 pm 02:18 PM

Analysis of class loading behavior of SPI mechanism when Tomcat loads Spring-Web modules. Tomcat is used to discover and use the Servle provided by Spring-Web when loading Spring-Web modules...

What is the reason why the browser does not respond after the WebSocket server returns 401? How to solve it? What is the reason why the browser does not respond after the WebSocket server returns 401? How to solve it? Apr 19, 2025 pm 02:21 PM

The browser's unresponsive method after the WebSocket server returns 401. When using Netty to develop a WebSocket server, you often encounter the need to verify the token. �...

See all articles