如何用JAVA对3*4二维数组转置输出?答:public static void main(String[] args) { int[][]arr = new int[][]{{1,2,3,4},{5,6,7,8},{9,10,11,12}};int[][]arr2 = new int[arr[0].length][arr.length];showArr(arr);System.out.println("---");for (int i = 0; i < arr[0].length; i++) { for (...
用Java如何把字符串转换成int二维数组答:public class {public static void main(String[]args){String s="1,2,3,4,5,6,7,8,9";/定义变量s/int[][] a=new int[3][3];/定义数组a/String[]b=s.split(",");/类型转换/for(int i=0,j=0,k=0;i)/for语句,定义i,j,k,表数组样式/a[j][k++]=Integer.parseInt(...