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 :
import java.math.RoundingMode;
import com.google.common.math.IntMath;
class GFG {
public static void main(String args[])
{
int a1 = 64 ;
int b1 = 36 ;
int ans1 = IntMath.gcd(a1, b1);
System.out.println( "GCD of a1 & b1 is: "
+ ans1);
int a2 = 23 ;
int b2 = 15 ;
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 :
import java.math.RoundingMode;
import com.google.common.math.IntMath;
class GFG {
public static void main(String args[])
{
int a1 = - 5 ;
int b1 = 15 ;
try {
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-
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