java.math.BigInteger.divide(BigInteger val)用于计算两个BigInteger的除法。 BigInteger类内部使用整数数组进行处理,对BigIntegers的对象的操作不如对基元进行的操作快。此方法对当前的BigInteger执行操作,调用该方法并将BigInteger作为参数传递。
用法:
public BigInteger divide(BigInteger val)
参数:此方法接受参数val,该参数val是除以BigInteger的值。
返回值:此方法返回一个BigInteger,它以Integer(非浮点值)形式保留除(this /val),即,将结果四舍五入到其底值。
异常:参数val不能为0,否则会引发算术异常。
下面的程序用于说明BigInteger的divide()方法。
示例1:
// Java program to demonstrate
// divide() method of BigInteger
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
// BigInteger object to store result
BigInteger div;
// Two objects of String created
// Holds the values to calculate the division
String input1 = "400000000000000000"
+ "000000000000000000";
String input2 = "8000000";
// Convert the string input to BigInteger
BigInteger a
= new BigInteger(input1);
BigInteger b
= new BigInteger(input2);
// Using divide() method
div = a.divide(b);
// Display the result in BigInteger
System.out.println("The division of\n"
+ a + " \nby\n" + b + " "
+ "\nis\n" + div);
}
}
输出:
The division of 400000000000000000000000000000000000 by 8000000 is 50000000000000000000000000000
示例2:演示如何舍入结果
// Java program to demonstrate
// divide() method of BigInteger
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
// BigInteger object to store result
BigInteger div;
// Two objects of String created
// Holds the values to calculate the division
String input1 = "456216545";
String input2 = "21255132";
// Convert the string input to BigInteger
BigInteger a
= new BigInteger(input1);
BigInteger b
= new BigInteger(input2);
// Using divide() method
div = a.divide(b);
// Display the result in BigInteger
System.out.println("The division of\n"
+ a + " \nby\n" + b + " "
+ "\nis " + div);
double d = Double.parseDouble(input1)
/ Double.parseDouble(input2);
// Display result in double type
// To match both the results
System.out.print("Using double result is " + d);
}
}
输出:
The division of 456216545 by 21255132 is 21 Using double result is 21.46383024109189
示例3:演示除以0时抛出的异常
// Java program to demonstrate
// divide() method of BigInteger
import java.math.BigInteger;
public class GFG {
public static void main(String[] args)
{
// BigInteger object to store result
BigInteger div;
// Two objects of String created
// Holds the values to calculate the division
String input1 = "456216545"
+ "452133155";
String input2 = "0";
// Convert the string input to BigInteger
BigInteger a
= new BigInteger(input1);
BigInteger b
= new BigInteger(input2);
// Using divide() method
try {
div = a.divide(b);
// Display the result in BigInteger
System.out.println("The division of\n"
+ a + " \nby\n" + b + " "
+ "\nis\n" + div + "\n");
}
catch (ArithmeticException e) {
System.out.println(e);
}
}
}
输出:
java.lang.ArithmeticException: BigInteger divide by zero
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注:本文由纯净天空筛选整理自Rajnis09大神的英文原创作品 BigInteger divide() Method in Java with Examples。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。