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12 Commits

Author SHA1 Message Date
Jes Cok
52748f60f3 all: stop using math/rand.Seed 
Fixes #16428.

Signed-off-by: Jes Cok <xigua67damn@gmail.com>
 2023-08-20 16:34:44 +08:00
Benjamin Wang
7f10dccbaf Bump go 1.19: update all the dependencies and go.sum files 
1. run ./scripts/fix.sh;
2. cd tools/mod; gofmt -w . & go mod tidy;

Signed-off-by: Benjamin Wang <wachao@vmware.com>
 2022-09-22 08:47:46 +08:00
Gyuho Lee
ac87ebdb02 pkg/adt: remove TODO 
Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
 2019-08-05 00:24:39 -07:00
xkey
003362ef8e pkg/adt: fix interval tree black-height property based on rbtree 
Author: xkey <xk33430@ly.com>
ref. https://github.com/etcd-io/etcd/pull/10978

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
 2019-08-04 23:08:45 -07:00
Gyuho Lee
3cc3affedd pkg/adt: mask test failure, add TODO 
Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
 2019-07-31 22:20:59 -07:00
Gyuho Lee
46f04b3c15 pkg/adt: add "IntervalTree.Delete" failure case 
Described in https://github.com/etcd-io/etcd/issues/10877.

"black-height" property: Every path from a node to any descendant leaf node must have the same number of black nodes.

Expected

    After deleting 11 (requires rebalancing):
                            [510,511]
                             /      \
                   ----------        --------------------------
                  /                                            \
              [383,384]                                       [830,831]
              /       \                                      /          \
             /         \                                    /            \
      [261,262](red)  [410,411]                     [647,648]           [899,900](red)
          /               \                              \                      /    \
         /                 \                              \                    /      \
      [82,83]           [292,293]                      [815,816](red)   [888,889]    [972,973]
            \                                                           /
             \                                                         /
          [238,239](red)                                       [953,954](red)

Got

    After deleting 11 (requires rebalancing):
                            [510,511]
                             /      \
                   ----------        --------------------------
                  /                                            \
              [82,83]                                       [830,831]
                    \                                      /          \
                     \                                    /            \
                  [383,384]                        [647,648]            [899,900]
                  /       \                              \                  /    \
                 /         \                              \                /      \
           [261,262]      [410,411]                      [815,816]   [888,889]    [972,973]
             /   \                                                                  /
            /     \                                                                /
     [238,239]   [292,293]                                                  [953,954]

This violates "black-height" property.

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
 2019-07-31 10:05:32 -07:00
Gyuho Lee
f2742d6cd4 pkg/adt: test node "11" deletion 
Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
 2019-07-31 10:05:32 -07:00
Gyuho Lee
6917c495e8 pkg/adt: add "visitLevel", make "IntervalTree" interface, more tests 
Make "IntervalTree" an interface to abstract range tree interface

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
 2019-07-30 15:59:59 -07:00
Anthony Romano
f67bdc2eed *: support checking that an interval tree's keys cover an entire interval 2017-04-03 15:38:07 -07:00
Anthony Romano
25e3ce1feb adt: Visit() interval trees in sorted order and terminate early 
For all intervals [x, y), Visit will visit intervals in ascending order
sorted by x. Also fixes a bug where Visit would not terminate the search
when requested by the visitor function.
 2017-03-23 00:02:29 -07:00
Gyu-Ho Lee
8b77de4e99 pkg: update LICENSE header 2016-05-12 20:48:53 -07:00
Anthony Romano
c0b06a7a32 pkg/adt: interval tree 2016-02-29 15:20:30 -08:00