* either form}), only the overhead is required. The number of object allocations is independent of
 * N in both cases.
 *
 * @author Pete Gillin
 * @since 20.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class Quantiles {
  /**
   * Constructor for a type that is not meant to be instantiated.
   *

   * NavigableMap<K, V> map2 = map.subMap(foo, false, bar, true);
   *
   * // Needn't be in synchronized block
   * NavigableSet<K> set2 = map2.descendingKeySet();
   *
   * synchronized (map) { // Synchronizing on map, not map2 or set2!
   *   Iterator<K> it = set2.iterator(); // Must be in synchronized block
   *   while (it.hasNext()) {
   *     foo(it.next());
   *   }
   * }
   * }
   *

   * NavigableMap<K, V> map2 = map.subMap(foo, false, bar, true);
   *
   * // Needn't be in synchronized block
   * NavigableSet<K> set2 = map2.descendingKeySet();
   *
   * synchronized (map) { // Synchronizing on map, not map2 or set2!
   *   Iterator<K> it = set2.iterator(); // Must be in synchronized block
   *   while (it.hasNext()) {
   *     foo(it.next());
   *   }
   * }
   * }
   *

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