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fix(avl): reorder recording statements

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Signed-off-by: Matej Focko <mfocko@redhat.com>
This commit is contained in:
Matej Focko 2022-05-06 10:34:42 +02:00
parent 0ef76257af
commit d709599ad9
Signed by: mfocko
GPG key ID: 7C47D46246790496
1 changed files with 8 additions and 11 deletions
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19
avl.js
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@ -36,12 +36,6 @@ class AVLTree extends RankedTree {
recursive = recursive ?? true; recursive = recursive ?? true;
// FIXME: not enough, must be checked against differences
// let bf = balanceFactor(node);
// if (bf < -1 || bf > 1) {
// return false;
// }
let differences = nodeDifferences(node); let differences = nodeDifferences(node);
differences.sort(); differences.sort();
if (!differences.equals([1, 1]) && !differences.equals([1, 2])) { if (!differences.equals([1, 1]) && !differences.equals([1, 2])) {
@ -59,12 +53,13 @@ class AVLTree extends RankedTree {
if (!y || nodeDifference(y) == 2) { if (!y || nodeDifference(y) == 2) {
newRoot = rotateRight(z); newRoot = rotateRight(z);
z.demote();
if (rotatingAroundRoot) { if (rotatingAroundRoot) {
this.root = newRoot; this.root = newRoot;
} }
this.record(); this.record();
z.demote();
this.record();
} else if (nodeDifference(y) == 1) { } else if (nodeDifference(y) == 1) {
rotateLeft(x); rotateLeft(x);
this.record(); this.record();
@ -76,9 +71,12 @@ class AVLTree extends RankedTree {
this.record(); this.record();
y.promote(); y.promote();
x.demote(); this.record();
z.demote();
x.demote();
this.record();
z.demote();
this.record(); this.record();
} }
} }
@ -164,7 +162,6 @@ class AVLTree extends RankedTree {
switch (factor) { switch (factor) {
case 0: case 0:
updateRank(x); updateRank(x);
this.record(); this.record();
return false; return false;