java絕對(duì)值如何求

小樊
82
2024-11-15 13:05:53

在Java中，要求一個(gè)數(shù)的絕對(duì)值，可以使用Math.abs()方法。這個(gè)方法接受一個(gè)double類型的參數(shù)，并返回其絕對(duì)值。以下是一些示例：

public class AbsoluteValue {
    public static void main(String[] args) {
        int number1 = -5;
        int number2 = 7;
        double number3 = -3.5;
        double number4 = 4.2;

        System.out.println("絕對(duì)值 of " + number1 + " is: " + Math.abs(number1)); // 輸出: 5
        System.out.println("絕對(duì)值 of " + number2 + " is: " + Math.abs(number2)); // 輸出: 7
        System.out.println("絕對(duì)值 of " + number3 + " is: " + Math.abs(number3)); // 輸出: 3.5
        System.out.println("絕對(duì)值 of " + number4 + " is: " + Math.abs(number4)); // 輸出: 4.2
    }
}

注意：Math.abs()方法對(duì)于整數(shù)類型（如int、long）只能求正數(shù)的絕對(duì)值，對(duì)于負(fù)數(shù)會(huì)返回相反數(shù)。對(duì)于浮點(diǎn)數(shù)類型（如double、float），它會(huì)返回一個(gè)接近于零的數(shù)，但不會(huì)改變其符號(hào)。

0 踩