Java Guava | gcd(int a, int b) method of IntMath Class
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 code to show implementation of// gcd(int a, int b) method of Guava's// IntMath classimport 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 code to show implementation of// gcd(int a, int b) method of Guava's// IntMath classimport 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.
