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docs: add Javadoc to FibonacciSeries (#7215)

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* docs: add Javadoc to FibonacciSeries

* fix: make small adjustment

---------

Co-authored-by: Deniz Altunkapan <deniz.altunkapan@outlook.com>
This commit is contained in:
Chahat Sandhu
2026-01-17 12:22:11 -06:00
committed by GitHub
parent 782d0755d5
commit 48f6322b38
1 changed files with 16 additions and 6 deletions
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22
src/main/java/com/thealgorithms/recursion/FibonacciSeries.java
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@@ -1,16 +1,26 @@
package com.thealgorithms.recursion; package com.thealgorithms.recursion;
/* /**
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones, * The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones,
starting with 0 and 1. * starting with 0 and 1.
NUMBER 0 1 2 3 4 5 6 7 8 9 10 ... * <p>
FIBONACCI 0 1 1 2 3 5 8 13 21 34 55 ... * Example:
*/ * 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55 ...
* </p>
*/
public final class FibonacciSeries { public final class FibonacciSeries {
private FibonacciSeries() { private FibonacciSeries() {
throw new UnsupportedOperationException("Utility class"); throw new UnsupportedOperationException("Utility class");
} }
/**
* Calculates the nth term in the Fibonacci sequence using recursion.
*
* @param n the position in the Fibonacci sequence (must be non-negative)
* @return the nth Fibonacci number
* @throws IllegalArgumentException if n is negative
*/
public static int fibonacci(int n) { public static int fibonacci(int n) {
if (n < 0) { if (n < 0) {
throw new IllegalArgumentException("n must be a non-negative integer"); throw new IllegalArgumentException("n must be a non-negative integer");