From 9da09584cd39f56c937b5c68b7375ab0d602957b Mon Sep 17 00:00:00 2001
From: Steve2020 <841532108@qq.com>
Date: Tue, 26 Apr 2022 00:03:54 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=880968.=E7=9B=91?=
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 =?UTF-8?q?=E5=A2=9E=E5=8A=A0typescript=E7=89=88=E6=9C=AC?=
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---
 problems/0968.监控二叉树.md | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/problems/0968.监控二叉树.md b/problems/0968.监控二叉树.md
index 35c3ccdc..9a510a1b 100644
--- a/problems/0968.监控二叉树.md
+++ b/problems/0968.监控二叉树.md
@@ -476,7 +476,35 @@ var minCameraCover = function(root) {
 };
 ```
 
+### TypeScript
+
+```typescript
+function minCameraCover(root: TreeNode | null): number {
+    /** 0-无覆盖， 1-有摄像头， 2-有覆盖 */
+    type statusCode = 0 | 1 | 2;
+    let resCount: number = 0;
+    if (recur(root) === 0) resCount++;
+    return resCount;
+    function recur(node: TreeNode | null): statusCode {
+        if (node === null) return 2;
+        const left: statusCode = recur(node.left),
+            right: statusCode = recur(node.right);
+        let resStatus: statusCode = 0;
+        if (left === 0 || right === 0) {
+            resStatus = 1;
+            resCount++;
+        } else if (left === 1 || right === 1) {
+            resStatus = 2;
+        } else {
+            resStatus = 0;
+        }
+        return resStatus;
+    }
+};
+```
+
 ### C 
+
 ```c
 /*
 **函数后序遍历二叉树。判断一个结点状态时，根据其左右孩子结点的状态进行判断