[英]Getting An InputMismatchException On Line 16 From A 2D Array Input And I Can't Seem To Figure Out Why
我正在编写一个程序,它接受网格输入并将其存储为二维数组。 但是,我不断收到 InputMismatchException 错误,我似乎无法找出原因。 这是代码:
import java.util.*;
public class Covid_Tracker {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int m = in.nextInt();
char[][] A = new char[n][m];
for (int row = 0; row < n; row++) {
for (int col = 0; col < m; col++) {
A[row][col]= in.next().charAt(0);;
}
}
int p = in.nextInt();
for (int i = 0; i < p; i++){
String firstName = in.next();
int X = in.nextInt();
int Y = in.nextInt();
}
int q = in.nextInt();
for (int i = 0; i <= q; i++){
String firstDirection = in.nextLine();
}
System.out.println("Alice: infected");
}
}
这是错误:
线程“main”中的异常 java.util.InputMismatchException
at java.base/java.util.Scanner.throwFor(Scanner.java:939)
at java.base/java.util.Scanner.next(Scanner.java:1594)
at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
at Assignment_1.main(Assignment_1.java:16)
输入示例如下:
5 4
XOOOO
欧氧
哦哦
哦哦
1 克里斯 4 1
3
克里斯东
克里斯北
克里斯北
(这是我仍在研究的部分,所以不在上面的代码中)然后程序会找出此人去过的地方,如果他们经过了 Covid 地区,程序会告诉我他们是否被感染或不。
您的输入不应有新行。
我使用了以下代码:
import java.util.*;
public class Covid_Tracker {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int m = in.nextInt();
char[][] A = new char[n][m];
for (int row = 0; row < n; row++) {
for (int col = 0; col < m; col++) {
A[row][col]= in.next().charAt(0);;
}
}
int p = in.nextInt();
for (int i = 0; i < p; i++){
String firstName = in.next();
int X = in.nextInt();
int Y = in.nextInt();
}
int q = in.nextInt();
for (int i = 0; i <= q; i++){
String firstDirection = in.nextLine();
}
System.out.println("Alice: infected");
}
}
输入是
5 4
X O O O O
O O O X O
O O O O O
O O O O O
1 Chris 4 1
3
Chris east
Chris north
Chris north
输出是
Alice:infected
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