From 246bbe921c5a09cc0f440bb97a75cf92067fd950 Mon Sep 17 00:00:00 2001 From: Steve2020 <841532108@qq.com> Date: Wed, 2 Mar 2022 14:20:44 +0800 Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=880235.=E4=BA=8C?= =?UTF-8?q?=E5=8F=89=E6=90=9C=E7=B4=A2=E6=A0=91=E7=9A=84=E6=9C=80=E8=BF=91?= =?UTF-8?q?=E5=85=AC=E5=85=B1=E7=A5=96=E5=85=88.md=EF=BC=89=EF=BC=9A?= =?UTF-8?q?=E5=A2=9E=E5=8A=A0typescript=E7=89=88=E6=9C=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...35.二叉搜索树的最近公共祖先.md | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/problems/0235.二叉搜索树的最近公共祖先.md b/problems/0235.二叉搜索树的最近公共祖先.md index b9d0a0bf..f7f1427a 100644 --- a/problems/0235.二叉搜索树的最近公共祖先.md +++ b/problems/0235.二叉搜索树的最近公共祖先.md @@ -350,6 +350,39 @@ var lowestCommonAncestor = function(root, p, q) { }; ``` +## TypeScript + +> 递归法： + +```typescript +function lowestCommonAncestor(root: TreeNode | null, p: TreeNode | null, q: TreeNode | null): TreeNode | null { + if (root.val > p.val && root.val > q.val) + return lowestCommonAncestor(root.left, p, q); + if (root.val < p.val && root.val < q.val) + return lowestCommonAncestor(root.right, p, q); + return root; +}; +``` + +> 迭代法： + +```typescript +function lowestCommonAncestor(root: TreeNode | null, p: TreeNode | null, q: TreeNode | null): TreeNode | null { + while (root !== null) { + if (root.val > p.val && root.val > q.val) { + root = root.left; + } else if (root.val < p.val && root.val < q.val) { + root = root.right; + } else { + return root; + }; + }; + return null; +}; +``` + + + -----------------------