[英]java : get values from matrix
每次我對y執行操作時,從表中獲取值0和1。
String[][] columns = {{"col1" , "col2"}};
int[] values = new int[columns.length];
String[] y = { "TEST", "BUG" };
for (int j = 0; j < y.length; j++)
{
//do some actions
//bellow I need to get at the same time col1 and col2
table.getVal(0, columns [0][j])) ?
}
我需要在y1和y2上獲得col1,col2的值? 我如何使用getVal中的列來獲得預期值?
謝謝,
class MatrixExampleDemo {
public static void main(String[] args) {
int array[][] = { { 1, 3, 5 }, { 2, 4, 6 } };
System.out.println("Row size= " + array.length);
System.out.println("Column size = " + array[1].length);
outputArray(array);
}
public static void outputArray(int[][] array) {
int rowSize = array.length;
int columnSize = array[0].length;
for (int i = 0; i <= 1; i++) {
System.out.print("[");
for (int j = 0; j <= 2; j++) {
System.out.print(" " + array[i][j]);
}
System.out.println(" ]");
}
System.out.println();
}
}
檢查一下...................
import java.lang.reflect.Array;
import static java.lang.System.out;
public class CreateMatrix {
public static void main(String... args) {
Object matrix = Array.newInstance(int.class, 2, 2);
Object row0 = Array.get(matrix, 0);
Object row1 = Array.get(matrix, 1);
Array.setInt(row0, 0, 1);
Array.setInt(row0, 1, 2);
Array.setInt(row1, 0, 3);
Array.setInt(row1, 1, 4);
for (int i = 0; i < 2; i++)
for (int j = 0; j < 2; j++)
out.format("matrix[%d][%d] = %d%n", i, j, ((int[][])matrix)[i][j]);
}
}
我沒有在代碼中看到邏輯,但一般矩陣操作將是:
String[][] matrix = new String[10][10];
matrix[0][0] = "1.1";
matrix[0][1] = "1.2";
matrix[1][0] = "2.1";
matrix[2][1] = "2.2";
int x = 0; // col
int y = 1; // row
String val = matrix[y][x]; // 1.2
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