From 3f7beb8c8f3d9e06f9932a157ffce92dd7d2aade Mon Sep 17 00:00:00 2001 From: fw_qaq <82551626+Jack-Zhang-1314@users.noreply.github.com> Date: Sun, 4 Dec 2022 17:59:09 +0800 Subject: [PATCH 1/2] =?UTF-8?q?Update=200235.=E4=BA=8C=E5=8F=89=E6=90=9C?= =?UTF-8?q?=E7=B4=A2=E6=A0=91=E7=9A=84=E6=9C=80=E8=BF=91=E5=85=AC=E5=85=B1?= =?UTF-8?q?=E7=A5=96=E5=85=88.md?= 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 c90b3d8c..97f85437 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 @@ -418,6 +418,39 @@ object Solution { } ``` +## rust + +```rust +impl Solution { + pub fn lowest_common_ancestor( + root: Option>>, + p: Option>>, + q: Option>>, + ) -> Option>> { + let q_val = q.as_ref().unwrap().borrow().val; + let p_val = p.as_ref().unwrap().borrow().val; + let root_val = root.as_ref().unwrap().borrow().val; + + if root_val > q_val && root_val > p_val { + return Self::lowest_common_ancestor( + root.as_ref().unwrap().borrow().left.clone(), + p, + q, + ); + }; + + if root_val < q_val && root_val < p_val { + return Self::lowest_common_ancestor( + root.as_ref().unwrap().borrow().right.clone(), + p, + q, + ); + } + root + } +} +``` +

From 6866f2b9ace6a92d38d9b28f3e91365a38878c35 Mon Sep 17 00:00:00 2001 From: fw_qaq <82551626+Jack-Zhang-1314@users.noreply.github.com> Date: Sun, 4 Dec 2022 19:35:20 +0800 Subject: [PATCH 2/2] =?UTF-8?q?Update=200235.=E4=BA=8C=E5=8F=89=E6=90=9C?= =?UTF-8?q?=E7=B4=A2=E6=A0=91=E7=9A=84=E6=9C=80=E8=BF=91=E5=85=AC=E5=85=B1?= =?UTF-8?q?=E7=A5=96=E5=85=88.md?= 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 | 28 +++++++++++++++++++ 1 file changed, 28 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 97f85437..aa06e86c 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 @@ -420,6 +420,8 @@ object Solution { ## rust +递归: + ```rust impl Solution { pub fn lowest_common_ancestor( @@ -451,6 +453,32 @@ impl Solution { } ``` +迭代: + +```rust +impl Solution { + pub fn lowest_common_ancestor( + mut root: Option>>, + p: Option>>, + q: Option>>, + ) -> Option>> { + let p_val = p.unwrap().borrow().val; + let q_val = q.unwrap().borrow().val; + while let Some(node) = root.clone() { + let root_val = node.borrow().val; + if root_val > q_val && root_val > p_val { + root = node.borrow().left.clone(); + } else if root_val < q_val && root_val < p_val { + root = node.borrow().right.clone(); + } else { + return root; + } + } + None + } +} +``` +