Java 二维数组转一维数组[通俗易懂]

package org.fly.test;

public class ArrayTranfer {

	public static void main(String[] args) {
		int int2d[][] = { { 1, 2, 3, 9 }, { 4, 5, 6, 7, 8 } };
		int[] int1d;
		int len = 0;
		for (int[] element : int2d) {
			len += element.length;
		}
		int1d = new int[len];
		int index = 0;
		for (int[] array : int2d) {
			for (int element : array) {
				int1d[index++] = element;
			}
		}
		for (int element : int1d) {
			System.out.print(element + ",");
		}
	}

}