编写一个方法输入两个int类型数组返回一个int类型的新数组新数组包含两个数组的所有元素用java 写

public static int[] mergeArrays(int[] arr1, int[] arr2) { int[] mergedArray = new int[arr1.length + arr2.length]; int index = 0; for (int i = 0; i < arr1.length; i++) { mergedArray[index++] = arr1[i]; } for (int i = 0; i < arr2.length; i++) { mergedArray[index++] = arr2[i]; } return mergedArray; }