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要使用 Java BigInteger 实现自定义的数值类型,你可以遵循以下步骤:
import java.math.BigInteger;
public class CustomBigInteger {
private BigInteger value;
public CustomBigInteger(String value) {
this.value = new BigInteger(value);
}
public CustomBigInteger(int value) {
this.value = BigInteger.valueOf(value);
}
// 其他构造方法,例如从 long、BigInteger 等创建 CustomBigInteger
}
在 CustomBigInteger 类中,你可以实现加法、减法、乘法、除法等基本操作。这里是一个简单的例子:
public class CustomBigInteger {
// ... 类的其他部分 ...
public CustomBigInteger add(CustomBigInteger other) {
return new CustomBigInteger(this.value.add(other.value));
}
public CustomBigInteger subtract(CustomBigInteger other) {
return new CustomBigInteger(this.value.subtract(other.value));
}
public CustomBigInteger multiply(CustomBigInteger other) {
return new CustomBigInteger(this.value.multiply(other.value));
}
public CustomBigInteger divide(CustomBigInteger other) {
if (other.value.equals(BigInteger.ZERO)) {
throw new ArithmeticException("Division by zero");
}
return new CustomBigInteger(this.value.divide(other.value));
}
// ... 其他方法 ...
}
public class CustomBigInteger {
// ... 类的其他部分 ...
public boolean equals(CustomBigInteger other) {
return this.value.equals(other.value);
}
public int compareTo(CustomBigInteger other) {
return this.value.compareTo(other.value);
}
public CustomBigInteger mod(CustomBigInteger other) {
if (other.value.equals(BigInteger.ZERO)) {
throw new ArithmeticException("Division by zero");
}
return new CustomBigInteger(this.value.mod(other.value));
}
public CustomBigInteger pow(int exponent) {
return new CustomBigInteger(this.value.pow(exponent));
}
// ... 其他方法 ...
}
现在你可以在你的程序中使用 CustomBigInteger 类来实现自定义的数值类型。例如:
public class Main {
public static void main(String[] args) {
CustomBigInteger a = new CustomBigInteger("12345678901234567890");
CustomBigInteger b = new CustomBigInteger("98765432109876543210");
CustomBigInteger sum = a.add(b);
CustomBigInteger difference = a.subtract(b);
CustomBigInteger product = a.multiply(b);
CustomBigInteger quotient = a.divide(b);
System.out.println("Sum: " + sum.value);
System.out.println("Difference: " + difference.value);
System.out.println("Product: " + product.value);
System.out.println("Quotient: " + quotient.value);
}
}
这个例子展示了如何使用 CustomBigInteger 类实现自定义的数值类型,并执行基本的算术运算。你可以根据需要扩展这个类,添加更多的方法和功能。
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