你如何在java中正确附加两个二维数组? [英] How do you append two 2D array in java properly?
本文介绍了你如何在java中正确附加两个二维数组?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我一直在尝试在 java 中附加两个二维数组.是否有可能得到一个例子,因为我一直试图查找它但找不到一个.
I have been trying to append two 2 D arrays in java. Is it possible to get an example because I have been trying to look it up but cannot find one.
int [][]appendArray(empty,window)
{
int [][]result= new int [empty.length][empty[0].length+window[0].length];
}
推荐答案
给你:
import java.util.Arrays;
public class Array2DAppend {
public static void main(String[] args) {
int[][] a = new int[][] {{1, 2}, {3, 4}};
int[][] b = new int[][] {{1, 2, 3}, {3, 4, 5}};
System.out.println(Arrays.deepToString(a));
System.out.println(Arrays.deepToString(b));
System.out.println(Arrays.deepToString(append(a, b)));
}
public static int[][] append(int[][] a, int[][] b) {
int[][] result = new int[a.length + b.length][];
System.arraycopy(a, 0, result, 0, a.length);
System.arraycopy(b, 0, result, a.length, b.length);
return result;
}
}
和输出:
[[1, 2], [3, 4]]
[[1, 2, 3], [3, 4, 5]]
[[1, 2], [3, 4], [1, 2, 3], [3, 4, 5]]
这篇关于你如何在java中正确附加两个二维数组?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文