feat(0682_baseball-game): add py3 soln

0682_baseball-game/python3/solution.py

@@ -0,0 +1,21 @@
+from collections import deque
+
+class Solution:
+    def calPoints(self, ops: List[str]) -> int:
+        d = deque()
+        
+        for _, op in enumerate(ops):
+            if op == "C":
+                d.pop()
+            elif op == "D":
+                d.append(d[-1] * 2)
+            elif op == "+":
+                d.append(d[-1] + d[-2])
+            else:
+                d.append(int(op))
+        
+        total = 0
+        while len(d) > 0:
+            total += d.pop()
+        
+        return total