1. import java.util.Arrays;
  3. public class ArraySync {
  5. /**
  6. * Synchronizes the resources of two arrays. Handles resizing and copying.
  7. * @param sourceArray The array to copy from.
  8. * @param destinationArray The array to copy to.
  9. * @return The destination array with the synchronized resources. Returns null if either input is null.
  10. * @throws IllegalArgumentException if arrays have different lengths.
  11. */
  12. public static <T> T[] syncArrays(T[] sourceArray, T[] destinationArray) {
  13. if (sourceArray == null || destinationArray == null) {
  14. return null; // Handle null input
  15. }
  17. if (sourceArray.length != destinationArray.length) {
  18. throw new IllegalArgumentException("Arrays must have the same length.");
  19. }
  21. // Copy elements from source to destination
  22. System.arraycopy(sourceArray, 0, destinationArray, 0, sourceArray.length);
  23. return destinationArray;
  24. }
  26. /**
  27. * Synchronizes the resources of two arrays with automatic resizing.
  28. * @param sourceArray The array to copy from.
  29. * @param destinationArray The array to copy to.
  30. * @return The destination array with synchronized resources.
  31. * @throws IllegalArgumentException if source array is larger than destination.
  32. */
  33. public static <T> T[] syncArraysResize(T[] sourceArray, T[] destinationArray) {
  34. if (sourceArray == null || destinationArray == null) {
  35. return null;
  36. }
  38. if (sourceArray.length > destinationArray.length) {
  39. throw new IllegalArgumentException("Source array cannot be larger than destination array.");
  40. }
  42. // Copy elements from source to destination, resizing if needed.
  43. System.arraycopy(sourceArray, 0, destinationArray, 0, sourceArray.length);
  44. return destinationArray;
  45. }
  47. public static void main(String[] args) {
  48. Integer[] arr1 = {1, 2, 3};
  49. Integer[] arr2 = new Integer[3];
  51. Integer[] syncedArr = syncArrays(arr1, arr2);
  52. System.out.println(Arrays.toString(syncedArr)); // Output: [1, 2, 3]
  55. String[] arr3 = {"a", "b"};
  56. String[] arr4 = new String[5];
  58. String[] syncedArrResize = syncArraysResize(arr3, arr4);
  59. System.out.println(Arrays.toString(syncedArrResize)); //Output: [a, b, null, null, null]
  60. }
  61. }

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