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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.


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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