From a021470215aa859a4d5b0e9fe48dd775e6c0ed51 Mon Sep 17 00:00:00 2001
From: Steve2020 <841532108@qq.com>
Date: Tue, 29 Mar 2022 14:38:19 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=880040.=E7=BB=84?=
 =?UTF-8?q?=E5=90=88=E6=80=BB=E5=92=8CII.md=EF=BC=89=EF=BC=9A=E5=A2=9E?=
 =?UTF-8?q?=E5=8A=A0typescript=E7=89=88=E6=9C=AC?=
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---
 problems/0040.组合总和II.md | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/problems/0040.组合总和II.md b/problems/0040.组合总和II.md
index 49acb8d6..de13e031 100644
--- a/problems/0040.组合总和II.md
+++ b/problems/0040.组合总和II.md
@@ -532,6 +532,7 @@ var combinationSum2 = function(candidates, target) {
 };
 ```
 **使用used去重**
+
 ```js
 var combinationSum2 = function(candidates, target) {
     let res = [];
@@ -562,6 +563,37 @@ var combinationSum2 = function(candidates, target) {
 };
 ```
 
+## TypeScript
+
+```typescript
+function combinationSum2(candidates: number[], target: number): number[][] {
+    candidates.sort((a, b) => a - b);
+    const resArr: number[][] = [];
+    function backTracking(
+        candidates: number[], target: number,
+        curSum: number, startIndex: number, route: number[]
+    ) {
+        if (curSum > target) return;
+        if (curSum === target) {
+            resArr.push(route.slice());
+            return;
+        }
+        for (let i = startIndex, length = candidates.length; i < length; i++) {
+            if (i > startIndex && candidates[i] === candidates[i - 1]) {
+                continue;
+            }
+            let tempVal: number = candidates[i];
+            route.push(tempVal);
+            backTracking(candidates, target, curSum + tempVal, i + 1, route);
+            route.pop();
+
+        }
+    }
+    backTracking(candidates, target, 0, 0, []);
+    return resArr;
+};
+```
+
 ## C 
 
 ```c