public class ListInsert {；public static long[] insert(long[] arr,int i,long l){；//新建陣列,對原陣列擴容；long[] arr1 = new long[arr.length+1];；//將原陣列資料賦值給新陣列；for(int j = 0;j<arr.length;j++){；arr1[j] = arr[j];；}；//將大於i的資料向後移動一位；for(int j = arr1.length-2;j>i;j--){；arr1[j+1] = arr1[j];；}；//賦值到i位置；arr1[i+1] = l;；return arr1;；}；//測試；public static void main(String[] args){；long[] arr = {12,25,11,36,14};；long[] arr1 = insert(arr, 2, 100);；for (long l : arr1) {；System.out.print(l+" ");；}；}；陣列的擴容方式：arr = Arrays.copyOf(arr, arr.length+1);