Java Guava | gcd(int a, int b) method of IntMath Class

Java Guava | gcd(int a, int b) method of IntMath Class

Last Updated : 28 Jan, 2019

The method gcd(int a, int b) of Guava's IntMath class returns the greatest common divisor of a, b. Syntax :

public static int gcd(int a, int b)

Where a and b are integers.

Return Value : Greatest common divisor of integers a and b. Exceptions : The method gcd(int a, int b) throws IllegalArgumentException if a < 0 or b < 0. Example 1 :

Java

// Java code to show implementation of
// gcd(int a, int b) method of Guava's
// IntMath class
import java.math.RoundingMode;
import com.google.common.math.IntMath;

class GFG {

    // Driver code
    public static void main(String args[])
    {
        int a1 = 64;
        int b1 = 36;

        // Using gcd(int a, int b) method
        // of Guava's IntMath class
        int ans1 = IntMath.gcd(a1, b1);

        System.out.println("GCD of a1 & b1 is: "
                           + ans1);

        int a2 = 23;
        int b2 = 15;

        // Using gcd(int a, int b) method
        // of Guava's IntMath class
        int ans2 = IntMath.gcd(a2, b2);

        System.out.println("GCD of a2 & b2 is: "
                           + ans2);
    }
}

Output:

GCD of a1 & b1 is: 4
GCD of a2 & b2 is: 1

Example 2 :

Java

// Java code to show implementation of
// gcd(int a, int b) method of Guava's
// IntMath class
import java.math.RoundingMode;
import com.google.common.math.IntMath;

class GFG {

    // Driver code
    public static void main(String args[])
    {
        int a1 = -5;
        int b1 = 15;

        try {
            // Using gcd(int a, int b) method
            // of Guava's IntMath class
            // This should throw "IllegalArgumentException"
            // as a1 < 0
            int ans1 = IntMath.gcd(a1, b1);
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

java.lang.IllegalArgumentException: a (-5) must be >= 0

Note: The method returns 0 if a == 0 && b == 0. Reference: https://google.github.io/guava/releases/20.0/api/docs/com/google/common/math/IntMath.html#gcd-int-int-

Java Guava | gcd(int a, int b) method of IntMath Class

bansal_rtk_

Improve

Article Tags :

Practice Tags :

Similar Reads

Java Guava | mod() method of IntMath Class

The mod(int x, int m) method of Guava's IntMath class accepts two parameters x and m and used to calculate the value of x modulus under m. Syntax : public static int mod(int x, int m) Parameters: This method accepts two parameters x and m which are of integer types and calculate x modulo m. Return V

Java Guava | IntMath.checkedAdd(int a, int b) method with Examples

The checkedAdd(int a, int b) is a method of Guava's IntMath Class which accepts two parameters a and b, and returns their sum. Syntax: public static int checkedAdd(int a, int b) Parameters: The method accepts two int values a and b and computes their sum. Return Value: The method returns the sum of

Java Guava | IntMath.checkedMultiply(int a, int b) method with Examples

The checkedMultiply(int a, int b) is a method of Guava's IntMath Class which accepts two parameters a and b, and returns their product. Syntax: public static int checkedMultiply(int a, int b) Parameters: The method accepts two int values a and b and computes their product. Return Value: The method r

Java Guava | isPrime() method of IntMath Class

The isPrime(int n) method of Guava's IntMath class is used to check whether the parameter passed to it is a prime number or not. If the parameter passed to it is prime, then it returns True otherwise it returns False. A number is said to be Prime if it is divisible only by 1 and the number itself. S

Java Guava | IntMath.checkedSubtract(int a, int b) method with Examples

The checkedSubtract(int a, int b) is a method of Guava's IntMath Class which accepts two parameters a and b, and returns their difference. Syntax: public static int checkedSubtract(int a, int b) Parameters: The method accepts two int values a and b and computes their difference. Return Value: The me

Java Guava | IntMath.checkedPow(int b, int k) method with Examples

checkedPow(int b, int k) is a method of Guava's IntMath Class which accepts two parameters b and k and is used to find the k-th power of b. Syntax: public static int checkedPow(int b, int k) Parameters: The method accepts two parameters, b and k. The parameter b is called base which is raised to the

Java Guava | ceilingPowerOfTwo() method of IntMath Class

The ceilingPowerOfTwo(int x) method of Guava's IntMath class accepts a parameter and calculates the smallest power of two greater than the values passed in the parameter. This method is equivalent to checkedPow(2, log2(x, CEILING)). Syntax : public static int ceilingPowerOfTwo(int x) Parameter: This

Java Guava | IntMath.divide(int, int, RoundingMode) method with Examples

The divide(int p, int q, RoundingMode mode) method of Guava's IntMath Class accepts three parameters and calculates the result of dividing first parameter by second parameter, rounded according to the rounding mode specified by the third parameter. Syntax: public static int divide(int p, int q, Roun

IntMath Class | Guava | Java

Introduction : IntMath is used to perform mathematical operations on Integer values. Basic standalone math functions are divided into the classes IntMath, LongMath, DoubleMath, and BigIntegerMath based on the primary numeric type involved. These classes have parallel structure, but each supports onl

Java Guava | LongMath.checkedMultiply(int a, int b) method with Examples

The checkedMultiply(long a, long b) is a method of Guava's LongMath Class which accepts two parameters a and b, and returns their product. Syntax: public static long checkedMultiply(long a, long b) Parameters: The method accepts two long values a and b and computes their product. Return Value: The m