Java Stream Operation gcd(IntStream numbers)

Description

Calculate the greatest commom divisor of all numbers in the int stream

License

Open Source License

Parameter

Parameter	Description
numbers	a int stream with some numbers

Return

the greatest common divisor of the numbers in the int stream

Declaration

public static int gcd(IntStream numbers) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.Arrays;
import java.util.stream.IntStream;

public class Main {
    private static int gcd(int x, int y) {
        return (y == 0) ? x : gcd(y, x % y);
    }//  w ww  . j  ava  2s.c om

    /**
     * Calculate the greatest commom divisor of all numbers in the int stream
     * 
     * @param numbers
     *            a int stream with some numbers
     * @return the greatest common divisor of the numbers in the int stream
     */
    public static int gcd(IntStream numbers) {
        return numbers.reduce(0, (x, y) -> gcd(x, y));
    }

    /**
     * Calculate the greatest commom divisor of some integers
     * 
     * @param numbers
     *            as many integers as you like
     * @return the greatest common divisor of the given numbers
     */
    public static int gcd(int... numbers) {
        return gcd(Arrays.stream(numbers));
    }
}

Related

1. findLastOf(Stream stream)
2. findStreamAmongst(Class clazz, Collection instances)
3. firstValue(Stream stream)
4. flatOptionals(Stream> list)
5. flattenFeatureStreamToMap( Stream>>> stream)
6. getOSIllegalCharacterStream(String path)
7. getStream(Iterable iterable)
8. getStringStreamFromArray(String... ids)
9. infiniteParallelStream()