我有一个越来越接近完成的河内塔益智计划。我现在的问题是试图让用户的输入正常工作。
如果他们键入“v”或“V”,则将显示解决难题的步骤(因此输出将是“将光盘从 S 移动到 D”等等)。否则,如果用户没有键入“v”或“V”,则程序继续解谜,显示总步数但不显示步数。
我遇到的问题是选项没有像他们应该的那样工作。
现在唯一的问题是当用户输入'v'或'V'时,移动没有正确显示。输出:
Enter the min number of discs :
2
Press 'v' or 'V' for a list of moves
v
Move disc from needle S to A
Total Moves : 3
如果用户键入“v”或“V”,我如何才能完成显示移动,如果用户键入除此之外的其他内容,则输出仅显示“总移动”?
这是我的代码:
import java.util.*;
import java.util.Scanner;
public class TowerOfHanoi4 {
static int moves=0;
public static void main(String[] args) {
System.out.println("Enter the min number of discs : ");
Scanner scanner = new Scanner(System.in);
int iHtMn = scanner.nextInt(); //iHeightMin
char source='S', auxiliary='D', destination='A'; //name poles or 'Needles'
System.out.println("Press 'v' or 'V' for a list of moves");
Scanner show = new Scanner(System.in);
String c = show.next();
// char lstep='v', lsteps='V'; // grab option v or V
if (c.equalsIgnoreCase("v")){ //if option is not v or V, execute code and only display total moves
hanoi(iHtMn, source, destination, auxiliary); //else, user typed v or V and moves are displayed
System.out.println(" Move disc from needle "+source+" to "+destination);
System.out.println(" Total Moves : "+moves);
} else {
hanoi(iHtMn, source, destination, auxiliary);
System.out.println(" Total Moves : "+moves);
}
}
static void hanoi(int htmn,char source,char destination,char auxiliary)
{
if (htmn >=1)
{
hanoi(htmn-1, source, auxiliary, destination); // move n-1 disks from source to auxilary
// System.out.println(" Move disc from needle "+source+" to "+destination); // move nth disk to destination
moves++;
hanoi(htmn-1, auxiliary, destination, source);//move n-1 disks from auxiliary to Destination
}
// else (
}
}