Update

2025-07-06 23:28:29 +08:00 · 2020-07-24 12:15:23 +08:00
parent 6e5620132e
commit f96ba21e35
1 changed files with 1 additions and 1 deletions
--- a/problems/0020.有效的括号.md
+++ b/problems/0020.有效的括号.md
@ -17,7 +17,7 @@ public:
            else if (s[i] == '{') st.push('}');
            else if (s[i] == '[') st.push(']');
            else if (st.empty() || st.top() != s[i]) return false;
-            else st.pop();
+            else st.pop(); // st.top() == s[i]
        }
        return st.empty();
    }