如何从二维数组中获取特定行？

Question

String[][] array = {{"a","b","c"},{"d","e","f"},{"g","h","i"}};
String[][] resultArray = [10][10];

我想将第一行数组值存储到resultArray，我该如何在java中执行此操作。请帮帮我

Answer 1

尝试：

String[] resultArray = array[0]; //gets the first row of array

Answer 2

String[][] array = {{"a","b","c"},{"d","e","f"},{"g","h","i"}};
String[] resultArrayPtr = array[index];

如果你想复制你将要迭代或使用clone。

Answer 3

试试这个：

复制参考

String[][] array = {{"a","b","c"},{"d","e","f"},{"g","h","i"}};
String[] resultArray = array[0];

复制值

String[][] array = {{"a","b","c"},{"d","e","f"},{"g","h","i"}};
String[] resultArray = new String[array[0].length];
System.arraycopy(array[0],0, resultArray, 0, array[0].length);