optimize

problems/1047.删除字符串中的所有相邻重复项.md

@@ -264,14 +264,15 @@ javaScript:
 
 ```js
 var removeDuplicates = function(s) {
-    const stack = [];
-    for(const x of s) {
-        let c = null;
-        if(stack.length && x === (c = stack.pop())) continue;
-        c && stack.push(c);
-        stack.push(x);
+    const result = []
+    for(const i of s){
+        if(i === result[result.length-1]){
+            result.pop()
+        }else{
+            result.push(i)
+        }
     }
-    return stack.join("");
+    return result.join('')
 };
 ```