Commit 3844e9f

RequireSuntrekhleb

authored and

committed

fix: correct the wrong code of Deletion (trekhleb#263)

1 parent e4ba378 commit 3844e9fCopy full SHA for 3844e9f

File tree

+24

-12

lines changed

+24

-12

lines changed

Lines changed: 24 additions & 12 deletions

Original file line number	Diff line number	Diff line change
`@@ -103,19 +103,31 @@ remove(value)`
`103`	`103`	`else`
`104`	`104`	`parent.right ← nodeToRemove.right`
`105`	`105`	`end if`
`106`		`- else if nodeToRemove.left = ø and nodeToRemove.right = ø`
`107`		`- if nodeToRemove.value < parent.value`
`108`		`- parent.left ← nodeToRemove.left`
`109`		`- else`
`110`		`- parent.right ← nodeToRemove.left`
`111`		`- end if`
	`106`	`+ else if nodeToRemove.left != ø and nodeToRemove.right != ø`
	`107`	`+ next ← nodeToRemove.right`
	`108`	`+ while next.left != ø`
	`109`	`+ next ← next.left`
	`110`	`+ end while`
	`111`	`+ if next != nodeToRemove.right`
	`112`	`+ remove(next.value)`
	`113`	`+ nodeToRemove.value ← next.value`
	`114`	`+ else`
	`115`	`+ nodeToRemove.value ← next.value`
	`116`	`+ nodeToRemove.right ← nodeToRemove.right.right`
	`117`	`+ end if`
`112`	`118`	`else`
`113`		`- largestValue ← nodeToRemove.left`
`114`		`- while largestValue.right = ø`
`115`		`- largestValue ← largestValue.right`
`116`		`- end while`
`117`		`- findParent(largestValue.value).right ← ø`
`118`		`- nodeToRemove.value ← largestValue.value`
	`119`	`+ if nodeToRemove.left = ø`
	`120`	`+ next ← nodeToRemove.right`
	`121`	`+ else`
	`122`	`+ next ← nodeToRemove.left`
	`123`	`+ end if`
	`124`	`+ if root = nodeToRemove`
	`125`	`+ root = next`
	`126`	`+ else if parent.left = nodeToRemove`
	`127`	`+ parent.left = next`
	`128`	`+ else if parent.right = nodeToRemove`
	`129`	`+ parent.right = next`
	`130`	`+ end if`
`119`	`131`	`end if`
`120`	`132`	`count ← count - 1`
`121`	`133`	`return true`

Comments

(0)