From b1ef364ffb9c0082f401c34bdd6bf22c4f330fa5 Mon Sep 17 00:00:00 2001
From: Steve2020 <841532108@qq.com>
Date: Mon, 2 May 2022 17:25:45 +0800
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---
 problems/0096.不同的二叉搜索树.md | 28 ++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/problems/0096.不同的二叉搜索树.md b/problems/0096.不同的二叉搜索树.md
index 41fcb8fe..25561b50 100644
--- a/problems/0096.不同的二叉搜索树.md
+++ b/problems/0096.不同的二叉搜索树.md
@@ -227,7 +227,33 @@ const numTrees =(n) => {
 };
 ```
 
-C:
+TypeScript
+
+```typescript
+function numTrees(n: number): number {
+    /**
+        dp[i]: i个节点对应的种树
+        dp[0]: -1; 无意义；
+        dp[1]: 1;
+        ...
+        dp[i]: 2 * dp[i - 1] + 
+            (dp[1] * dp[i - 2] + dp[2] * dp[i - 3] + ... + dp[i - 2] * dp[1]); 从1加到i-2
+     */
+    const dp: number[] = [];
+    dp[0] = -1; // 表示无意义
+    dp[1] = 1;
+    for (let i = 2; i <= n; i++) {
+        dp[i] = 2 * dp[i - 1];
+        for (let j = 1, end = i - 1; j < end; j++) {
+            dp[i] += dp[j] * dp[end - j];
+        }
+    }
+    return dp[n];
+};
+```
+
+### C
+
 ```c
 //开辟dp数组
 int *initDP(int n) {