TSMultiPathDoublyLinkedList

TSMultiPathDoublyLinkedList

 tract 01     tract 02     tract 03     tract 04
----------   ----------   ----------   ----------   order:
   t1i1                                               ||
                t2i2                                  ||    TSMultiPathDoublyLinkedList iteration order:
                                          t4i3        \/      - t1i1, t2i2, t4i3, t3i4, t3i5, t1i6
                             t3i4
                             t3i5                           tract iteration orders:
   t1i6                                                       - tract 01: t1i1, t1i6
                                                              - tract 02: t2i2
                                                              - tract 03: t3i4, t3i5
                                                              - tract 04: t4i3

Where n is the total number of elements in the TSMultiPathDoublyLinkedList and k is the total number of elements in a given tract:

list iterator:   O(n)
tract iterator:  O(k)
list get(x):     O(n)
tract get(x):    O(k)