Update min-stack.cpp

XuhuiRen · Jun 10, 2016 · 97aaccb · 97aaccb
1 parent cc58a35
commit 97aaccb
Showing 1 changed file with 5 additions and 11 deletions.
diff --git a/C++/min-stack.cpp b/C++/min-stack.cpp
@@ -55,26 +55,20 @@ class MinStack2 {
     }
 
     void pop() {
-        if (!elements_.empty()) {
-            if (!cached_min_with_count_.empty() &&
-                cached_min_with_count_.top().first == elements_.top()) {
-                if (--cached_min_with_count_.top().second == 0) {
-                    cached_min_with_count_.pop();
-                }
+        if (cached_min_with_count_.top().first == elements_.top()) {
+            if (--cached_min_with_count_.top().second == 0) {
+                cached_min_with_count_.pop();
             }
-            auto number = elements_.top();
-            elements_.pop();
         }
+        elements_.pop();
     }
 
     int top() {
         return elements_.top();
     }
 
     int getMin() {
-        if (!cached_min_with_count_.empty()) {
-            return cached_min_with_count_.top().first;
-        }
+        return cached_min_with_count_.top().first;
     }
 
 private: