Full Stack Developer Course

Java Tutorials

Here's how you can find Keith numbers in Java using the brute force search method:

Keith Number Program in Java Using Brute Force Search Method

In mathematics, there are countless interesting phenomena waiting to be discovered. One such concept is Keith numbers. A Keith number is a specific type of number in mathematics that has an interesting property related to its digits.&nbsp;
<h2 dir="ltr">What is Keith Number?</h2>
A Keith number is an n-digit integer that appears in a special sequence called a "Keith sequence."
To be classified as a Keith number, the following conditions must be met:
<ul>
<li dir="ltr" aria-level="1">
Start with a sequence of n positive integers (digits).
</li>
<li dir="ltr" aria-level="1">
The first n terms of the sequence are the digits of the Keith number itself.
</li>
<li dir="ltr" aria-level="1">
The subsequent terms of the sequence are generated by adding the previous n terms.
</li>
<li dir="ltr" aria-level="1">
The Keith number itself must appear in this sequence.
</li>
</ul>
Here's an example of Keith Number:
Consider the Keith number 197. To determine if it's a Keith number:
Start with the sequence [1, 9, 7].
The next term in the sequence is the sum of the previous three terms: 1 + 9 + 7 = 17.
Continue generating terms: [1, 9, 7, 17, 33, 57, 107, ...]
As you can see, the number 197 appears in the sequence. Thus, 197 is a Keith number because it satisfies all the conditions.
Keith numbers are named after Michael Keith, who first described them in 1987. They are relatively rare, and finding them can be a fun mathematical challenge. Some well-known Keith numbers include 14, 19, 28, 47, and 197, but there are many more.
In this tutorial, we will learn to find Keith number in Java using programs and examples.
Concepts to Learn:
<ul>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-variables" target="_blank" rel="noopener">Java Variables&nbsp;</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-data-types" target="_blank" rel="noopener">Java Data Types</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-loops" target="_blank" rel="noopener">Java Loops&nbsp;</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-conditional-statements" target="_blank" rel="noopener">Conditional Statements in Java</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-programming-basics" target="_blank" rel="noopener">Basics of Java</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-arrays" target="_blank" rel="noopener">Arrays in Java</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-methods" target="_blank" rel="noopener">Methods in Java</a>
</li>
<li dir="ltr" aria-level="1">
<a href="https://www.tutorialsfreak.com/java-tutorial/java-string" target="_blank" rel="noopener">String in Java</a>
</li>
</ul>

Find Keith Number in Java (Easy Programs)

Here's how you can find Keith numbers in Java using the dynamic programming method:

Find Keith Number in Java Using Dynamic Programming

Java Program to Count Number of Digits in Number (Integer Length)

Java Program to Reverse a String (4 Methods)

How to Reverse an Array in Java? Array Reverse Program

How to Find Power of a Number in Java? 4 Programs

How to Find Factors of a Number in Java? Factors Program

Check Disarium Number in Java (3 Easy Programs)

Happy Number in Java (Easy Programs With Logic)

Find Sunny Number in Java (Easy Programs)

Learn how to find a Keith number in Java using two easy-to-understand programs, with code examples and step-by-step explanations. Get Started Now!