Question

java矩阵这么键盘输入？

Answer 1

你好，实例代码如下，希望你可以受到启发：
import java.util.Scanner;

public class Matrix {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in) ;
System.out.print("请输入矩阵的行高：");
int a = sc.nextInt() ;
System.out.print("请输入矩阵的列宽：");
int b = sc.nextInt() ;
double[][] x = new double[a][b] ;

for(int i=0;i<a;i++){
for(int j=0;j<b;j++){
System.out.print("请输入元素x["+i+"]["+j+"]的值：" );
x[i][j] = sc.nextDouble() ;
}
}
print(x) ;
}
public static void print(double[][] x){
System.out.println("您输入的矩阵为：");
for(int i=0;i<x.length;i++){
for(int j=0;j<x[i].length;j++){
System.out.print(x[i][j] + " ") ;
}
System.out.println();
}
}
}