浊酒青灯客

（1）int volume(int a):求立方体的体积，参数a是边长。（2）int volume(inta,int b,int c):求长方体的体积，参数a,b,c分别是长方体的长、宽和高。（3）double volume(double r,double h):求圆柱体的体积，参数r,h分别是圆柱体的半径和高。根据题目要求完成这3个方法的定义并使用它们。代码如下：public class X { int volume(int a) { return a * a * a; } int

package chapter_after5;import java.util.Scanner;public class Five_7 { public static void main(String[] args) { System.out.print("请输入字符串："); String str = new Scanner(System.in).next(); String newStr = ""; for (int i = 0; i < str.length(); i++)

package chapter_after5;import java.util.Scanner;public class Five_3 { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("请输入十个整数："); int array[] = new int[10]; for (int i = 0; i < 10; i++) {

package chapter_after5;public class Five_5 { public static void main(String[] args) { int sum = 0; int array[][] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; for (int i = 0; i < array.length; i++) { for (int j = 0; j < array[i].length; j++) {

package chapter_after5;public class Five_4 { public static void main(String[] args) { int num = 20; double mult, sum = 0; for (int i = 1; i <= num; i ++) { mult = 1; for (int j = 1; j <= i; j++) { mult *= j; } System.out.prin

package chapter_after5;import java.util.Scanner;public class Five_2 { public static void main(String[] args) { @SuppressWarnings("resource") Scanner input = new Scanner(System.in); System.out.print("请输入一个数字字符串："); String str = input.next(); i

package chapter_after5;import java.util.Scanner;public class Five_1 { @SuppressWarnings("resource") public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("请输入一个正整数："); int num = input.nextInt(); //整