Guava – LongMath.mean方法与实例

Guava的LongMath类的mean(long x, long y)方法接受两个参数x和y，并计算它们的算术平均值，并向负无穷值方向取整。这个方法是抗溢出的。

语法:

public static long mean(long x, long y)

参数。 这个方法接受两个参数x和y，它们都是长类型的。

返回值： 该方法返回x和y的算术平均值，四舍五入后为负无穷大。

异常情况： 该方法没有任何异常。

示例1:

// Java code to show implementation of
// mean(long x, long y) method of Guava's
// LongMath class
  
import java.math.RoundingMode;
import com.google.common.math.LongMath;
  
class GFG {
  
    // Driver code
    public static void main(String args[])
    {
        long x = 1542;
        long y = 421;
  
        // Using mean(long x, long y)
        // method of Guava's LongMath class
        long ans = LongMath.mean(x, y);
  
        // Displaying the result
        System.out.println("Mean of " + x + " and "
                           + y + " is : " + ans);
    }
}

输出:

Mean of 1542 and 421 is : 981

示例2:

// Java code to show implementation of
// mean(long x, long y) method of Guava's
// LongMath class
  
import java.math.RoundingMode;
import com.google.common.math.LongMath;
  
class GFG {
  
    // Driver code
    public static void main(String args[])
    {
        long x = 65;
        long y = 41;
  
        // Using mean(long x, long y)
        // method of Guava's LongMath class
        long ans = LongMath.mean(x, y);
  
        // Displaying the result
        System.out.println("Mean of " + x + " and "
                           + y + " is : " + ans);
    }
}

输出: