Method subarray

java/com/google/re2j/Parser.java:1702–1708

(Regexp[] array, int start, int end)

  // Returns a new copy of the specified subarray.
  static Regexp[] subarray(Regexp[] array, int start, int end) {
    Regexp[] r = new Regexp[end - start];
    for (int i = start; i < end; ++i) {
      r[i - start] = array[i];
    }
    return r;
  }

  private static class Pair<F, S> {
    final F first;