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完善了rotate 还差3的特殊旋转

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This commit is contained in:
huangsimin 2019-03-28 18:14:15 +08:00
parent 6f6a64ed08
commit 45ef1aca6c
1 changed files with 15 additions and 5 deletions
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20
priority_queue/vbt.go
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@ -440,7 +440,7 @@ func (tree *vbTree) Put(key interface{}) *tNode {
ls, rs := cur.children[0].size, cur.children[1].size
factor := cur.size / 10 // or factor = 1
if rs >= ls*2+factor || ls >= rs*2+factor {
tree.fixSize(cur, ls, rs)
cur = tree.fixSize(cur, ls, rs)
}
}
@ -640,13 +640,16 @@ func (tree *vbTree) lrrotate(cur *tNode) *tNode {
} else {
cur.parent.children[r] = lrn
}
} else {
tree.root = lrn
}
lrn.parent = cur.parent
lrn.children[l] = cur.children[l]
lrn.children[l].parent = lrn
lrn.children[l] = cur
lrn.children[l].parent = lrn
lrn.children[r] = cur
lrn.children[r].parent = lrn
cur.children[l] = lrrn
cur.children[l].parent = cur
@ -701,13 +704,16 @@ func (tree *vbTree) rlrotate(cur *tNode) *tNode {
} else {
cur.parent.children[r] = lrn
}
} else {
tree.root = lrn
}
lrn.parent = cur.parent
lrn.children[l] = cur.children[l]
lrn.children[l].parent = lrn
lrn.children[l] = cur
lrn.children[l].parent = lrn
lrn.children[r] = cur
lrn.children[r].parent = lrn
cur.children[l] = lrrn
cur.children[l].parent = cur
@ -752,6 +758,8 @@ func (tree *vbTree) rrotate(cur *tNode) *tNode {
} else {
cur.parent.children[r] = ln
}
} else {
tree.root = ln
}
ln.parent = cur.parent
@ -802,6 +810,8 @@ func (tree *vbTree) lrotate(cur *tNode) *tNode {
} else {
cur.parent.children[r] = ln
}
} else {
tree.root = ln
}
ln.parent = cur.parent