From f569c710e299b833242756903757b18738727213 Mon Sep 17 00:00:00 2001
From: QuinnDK <39618652+QuinnDK@users.noreply.github.com>
Date: Sat, 15 May 2021 17:50:32 +0800
Subject: [PATCH] =?UTF-8?q?Update=200077.=E7=BB=84=E5=90=88.md?=
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---
 problems/0077.组合.md | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/problems/0077.组合.md b/problems/0077.组合.md
index 3dfb5216..3e840cd2 100644
--- a/problems/0077.组合.md
+++ b/problems/0077.组合.md
@@ -346,6 +346,32 @@ Python：
 
 
 Go：
+```Go
+var res [][]int 
+func combine(n int, k int) [][]int {
+   res=[][]int{}
+   if n <= 0 || k <= 0 || k > n {
+		return res
+	}
+    backtrack(n, k, 1, []int{})
+	return res
+}
+func backtrack(n,k,start int,track []int){
+    if len(track)==k{
+        temp:=make([]int,k)
+        copy(temp,track)
+        res=append(res,temp)
+    }
+    if len(track)+n-start+1 < k {
+			return
+		}
+    for i:=start;i<=n;i++{
+        track=append(track,i)
+        backtrack(n,k,i+1,track)
+        track=track[:len(track)-1]
+    }
+}
+```