代码修改

Author: zhang-xh95

lengthOfLongestSubstring.cpp

@@ -4,12 +4,14 @@
 int lengthOfLongestSubstring(string s) {
     int max=0;
     string subs=s.substr(0,1);
+    if(s.size()==1) return 1;
     for(int i =1;i<s.size();++i){
         auto pos=subs.find(s[i]);
-        if (pos==npos) {s.append(s[i]);continue;}
-        max=(subs.size()>max)? subs.size(),max;
-        subs.erase(0,npos);
-        subs.append(s[i])
+        if (pos==-1) {subs.append(s,i,1);continue;}
+        max=(subs.size()>max)? subs.size():max;
+        subs.erase(0,pos+1);
+        subs.append(s,i,1);
     }
+    max=(subs.size()>max)? subs.size():max;
     return max;
-}
+    }