获取数组中每个组件的绝对值。

/*来 自 时代Java - nowjava.com*/


//package com.nowjava;


public class Main {

    public static void main(String[] argv) throws Exception {

        double[] v = new double[] { 34.45, 35.45, 36.67, 37.78, 37.0000,

                37.1234, 67.2344, 68.34534, 69.87700 };

        System.out.println(java.util.Arrays.toString(abs(v)));

    }


    /**

     * Takes the absolute value of each component of an array.

     */

    public static double[] abs(double[] v) {

        double[] ans = new double[v.length];

        for (int i = 0; i < v.length; i++) {

            ans[i] = Math.abs(v[i]);

        }

        return (ans);

    }


    /**

     * Takes the absolute value of each component of an array.

     */

    public static double[][] abs(double[][] v) {

        double[][] ans = new double[v.length][];
        /*来自 
         N o w J a v a . c o m*/

        for (int i = 0; i < v.length; i++) {

            ans[i] = abs(v[i]);

        }

        return (ans);

    }


    /**

     * Takes the absolute value of each component of an array.

     */

    public static int[] abs(int[] v) {

        int[] ans = new int[v.length];

        for (int i = 0; i < v.length; i++) {

            ans[i] = Math.abs(v[i]);

        }

        return (ans);

    }


    /**

     * Takes the absolute value of each component of an array.

     */

    public static int[][] abs(int[][] v) {

        int[][] ans = new int[v.length][];

        for (int i = 0; i < v.length; i++) {

            ans[i] = abs(v[i]);

        }

        return (ans);

    }


    /**

     * Returns a comma delimited string representing the value of the array.

     */

    public static String toString(double[] array) {


        StringBuffer buf = new StringBuffer(array.length);

        int i;

        for (i = 0; i < array.length - 1; i++) {

            buf.append(array[i]);

            buf.append(',');

        }

        buf.append(array[i]);

        return buf.toString();

    }


    /**

     * Returns a comma delimited string representing the value of the array.

     */

    public static String toString(double[][] array) {

        StringBuffer buf = new StringBuffer();

        for (int k = 0; k < array.length; k++) {

            buf.append(toString(array[k]));

            buf.append(System.getProperty("line.separator"));

        }

        return buf.toString();

    }


    /**

     * Returns a comma delimited string representing the value of the array.

     */

    public static String toString(int[] array) {

        StringBuffer buf = new StringBuffer(array.length);

        int i;

        for (i = 0; i < array.length - 1; i++) {