From 343ddb37f9e84284ff8df34f89bed18522244e43 Mon Sep 17 00:00:00 2001
From: bqlin <bqlins@163.com>
Date: Mon, 20 Dec 2021 20:13:42 +0800
Subject: [PATCH] =?UTF-8?q?1047.=E5=88=A0=E9=99=A4=E5=AD=97=E7=AC=A6?=
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---
 .../1047.删除字符串中的所有相邻重复项.md | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/problems/1047.删除字符串中的所有相邻重复项.md b/problems/1047.删除字符串中的所有相邻重复项.md
index d6eefd07..9309aed8 100644
--- a/problems/1047.删除字符串中的所有相邻重复项.md
+++ b/problems/1047.删除字符串中的所有相邻重复项.md
@@ -322,14 +322,12 @@ char * removeDuplicates(char * s){
 Swift：
 ```swift
 func removeDuplicates(_ s: String) -> String {
-    let array = Array(s)
     var stack = [Character]()
-    for c in array {
-        let last: Character? = stack.last
-        if stack.isEmpty || last != c {
-            stack.append(c)
-        } else {
+    for c in s {
+        if stack.last == c {
             stack.removeLast()
+        } else {
+            stack.append(c)
         }
     }
     return String(stack)