✨ upload T682 python solution

Author: InnoFang

LeetCode/0682. Baseball Game/solution.py

@@ -0,0 +1,14 @@
+"""
+39 / 39 test cases passed.
+Runtime: 32 ms
+Memory Usage: 15.2 MB
+"""
+class Solution:
+    def calPoints(self, ops: List[str]) -> int:
+        stk = []
+        for op in ops:
+            if op == 'C': stk.pop()
+            elif op == '+': stk.append(stk[-2] + stk[-1])
+            elif op == 'D': stk.append(stk[-1] * 2)
+            else: stk.append(int(op))
+        return sum(stk)