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Tip: Divide Two Positive Integers and Round Up

Learn how to divide two positive integers and round them up in Java.


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In Java, we can divide two positive integers and round up as follows:

int result = (x + y - 1) / y

Example: (4/3 = 1.33 and we want 2):

long result = (4 + 3 - 1) / 3; // 2

 

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Octavia Andreea Anghel is a senior PHP developer currently working as a primary trainer for programming teams that participate at national and international software-development contests. She consults on developing educational projects at a national level. She is a coauthor of the book "XML Technologies--XML in Java" (Albastra, ISBN 978-973-650-210-1), for which she wrote the XML portions. In addition to PHP and XML, she's interested in software architecture, web services, UML, and high-performance unit tests.
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