Class LongBag

java.lang.Object
com.github.tommyettinger.ds.LongList
com.github.tommyettinger.ds.LongBag
All Implemented Interfaces:
Arrangeable, Ordered.OfLong, PrimitiveCollection<Long>, PrimitiveCollection.OfLong

public class LongBag extends LongList
An unordered List of long items. This allows efficient iteration via a reused iterator or via index. This class avoids a memory copy when removing elements (the last element is moved to the removed element's position). Items are permitted to change position in the ordering when any item is removed or added. Although this won't keep an order during modifications, you can LongList.sort() the bag to ensure, if no modifications are made later, that the iteration will happen in sorted order.
  • Constructor Details

    • LongBag

      public LongBag()
      Creates an ordered bag with a capacity of 10.
    • LongBag

      public LongBag(int capacity)
      Creates an ordered bag with the specified capacity.
      Parameters:
      capacity -
    • LongBag

      public LongBag(LongList list)
      Creates a new bag containing the elements in the specific list or bag. The capacity is set to the number of elements, so any subsequent elements added will cause the backing array to be grown.
      Parameters:
      list - another LongList or LongBag
    • LongBag

      public LongBag(long[] array)
      Creates a new bag containing the elements in the specified array. The capacity is set to the number of elements, so any subsequent elements added will cause the backing array to be grown.
      Parameters:
      array - a non-null long array to add to this bag
    • LongBag

      public LongBag(long[] array, int startIndex, int count)
      Creates a new bag containing the elements in the specified array. The capacity is set to the number of elements, so any subsequent elements added will cause the backing array to be grown.
      Parameters:
      array - a non-null long array to add to this bag
      startIndex - the first index in array to use
      count - how many items to use from array
    • LongBag

      public LongBag(PrimitiveCollection.OfLong coll)
      Creates a new bag containing the items in the specified PrimitiveCollection.OfLong.
      Parameters:
      coll - a primitive collection that will have its contents added to this
    • LongBag

      public LongBag(LongIterator coll)
      Creates a new instance containing the items in the specified iterator.
      Parameters:
      coll - an iterator that will have its remaining contents added to this
    • LongBag

      public LongBag(Ordered.OfLong other)
      Copies the given Ordered.OfLong into a new bag.
      Parameters:
      other - another Ordered.OfLong
    • LongBag

      public LongBag(Ordered.OfLong other, int offset, int count)
      Creates a new bag by copying count items from the given Ordered, starting at offset in that Ordered, into this.
      Parameters:
      other - another Ordered.OfLong
      offset - the first index in other's ordering to draw an item from
      count - how many items to copy from other
  • Method Details

    • keepsOrder

      public boolean keepsOrder()
      Returns true if this implementation retains order, which it does not.
      Overrides:
      keepsOrder in class LongList
      Returns:
      false
    • insert

      public void insert(int index, long element)
      This always adds element to the end of this bag's ordering.
      Overrides:
      insert in class LongList
      Parameters:
      index - ignored
      element - element to be inserted
    • removeAt

      public long removeAt(int index)
      Removes and returns the item at the specified index. Note that this is equivalent to List.remove(int), but can't have that name because we also have LongList.remove(long) that removes a value, rather than an index.
      Overrides:
      removeAt in class LongList
      Parameters:
      index - the index of the item to remove and return
      Returns:
      the removed item
    • removeRange

      public void removeRange(int start, int end)
      Removes the items between the specified start index, inclusive, and end index, exclusive. Note that this takes different arguments than some other range-related methods; this needs a start index and an end index, rather than a count of items. This matches the behavior in the JDK collections.
      Specified by:
      removeRange in interface Ordered.OfLong
      Overrides:
      removeRange in class LongList
      Parameters:
      start - the first index to remove, inclusive
      end - the last index (after what should be removed), exclusive
    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface PrimitiveCollection<Long>
      Overrides:
      hashCode in class LongList
    • with

      public static LongBag with()
      Constructs an empty bag. This is usually less useful than just using the constructor, but can be handy in some code-generation scenarios when you don't know how many arguments you will have.
      Returns:
      a new bag containing nothing
    • with

      public static LongBag with(long item)
      Creates a new LongBag that holds only the given item, but can be resized.
      Parameters:
      item - a long item
      Returns:
      a new LongBag that holds the given item
    • with

      public static LongBag with(long item0, long item1)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long item0, long item1, long item2)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      item2 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long item0, long item1, long item2, long item3)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      item2 - a long item
      item3 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long item0, long item1, long item2, long item3, long item4)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      item2 - a long item
      item3 - a long item
      item4 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long item0, long item1, long item2, long item3, long item4, long item5)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      item2 - a long item
      item3 - a long item
      item4 - a long item
      item5 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long item0, long item1, long item2, long item3, long item4, long item5, long item6)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      item2 - a long item
      item3 - a long item
      item4 - a long item
      item5 - a long item
      item6 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long item0, long item1, long item2, long item3, long item4, long item5, long item6, long item7)
      Creates a new LongBag that holds only the given items, but can be resized.
      Parameters:
      item0 - a long item
      item1 - a long item
      item2 - a long item
      item3 - a long item
      item4 - a long item
      item5 - a long item
      item6 - a long item
      Returns:
      a new LongBag that holds the given items
    • with

      public static LongBag with(long... varargs)
      Creates a new LongBag that holds only the given items, but can be resized. This overload will only be used when an array is supplied and the type of the items requested is the component type of the array, or if varargs are used and there are 9 or more arguments.
      Parameters:
      varargs - a long varargs or long array; remember that varargs allocate
      Returns:
      a new LongBag that holds the given items
    • parse

      public static LongBag parse(String str, String delimiter)
      Calls parse(String, String, boolean) with brackets set to false.
      Parameters:
      str - a String that will be parsed in full
      delimiter - the delimiter between items in str
      Returns:
      a new collection parsed from str
    • parse

      public static LongBag parse(String str, String delimiter, boolean brackets)
      Creates a new collection and fills it by calling PrimitiveCollection.OfLong.addLegible(String, String, int, int) on either all of str (if brackets is false) or str without its first and last chars (if brackets is true). Each item is expected to be separated by delimiter.
      Parameters:
      str - a String that will be parsed in full (depending on brackets)
      delimiter - the delimiter between items in str
      brackets - if true, the first and last chars in str will be ignored
      Returns:
      a new collection parsed from str
    • parse

      public static LongBag parse(String str, String delimiter, int offset, int length)
      Creates a new collection and fills it by calling PrimitiveCollection.OfLong.addLegible(String, String, int, int) with the given four parameters as-is.
      Parameters:
      str - a String that will have the given section parsed
      delimiter - the delimiter between items in str
      offset - the first position to parse in str, inclusive
      length - how many chars to parse, starting from offset
      Returns:
      a new collection parsed from str