作者：Because_of_you龙 | 来源：互联网 | 2023-06-01 13:37
int math 类的 Java 番石榴| gcd(int a，int b)方法原文:https://www . geesfor
int math 类
的 Java 番石榴| gcd(int a，int b)方法
原文:https://www . geesforgeks . org/Java-guava-gcdint-a-int-b-method-of-int math-class/
番石榴的 IntMath 类的方法 gcd(int a，int b) 返回 a，b 的最大公约数。
语法:
public static int gcd(int a, int b)
Where a and b are integers.
返回值:整数 a 和 b 的最大公约数
异常:如果 a <0 或 b <0，方法 gcd(int a，int b)会抛出IllegalArgumentException。
例 1 :
// 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);
}
}
输出:
GCD of a1 & b1 is: 4
GCD of a2 & b2 is: 1
例 2 :
// 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);
}
}
}
输出:
java.lang.IllegalArgumentException: a (-5) must be >= 0
注意:如果 a = = 0&b = = 0，则方法返回 0。
参考:https://Google . github . io/guava/releases/20.0/API/docs/com/Google/common/math/intmath . html # gcd-int-int-
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