feat: add solutions to lc problem: No.0639

No.0639.Decode Ways II

Author: yanglbme

solution/0000-0099/0057.Insert Interval/Solution.py

@@ -1,5 +1,7 @@
 class Solution:
-    def insert(self, intervals: List[List[int]], newInterval: List[int]) -> List[List[int]]:
+    def insert(
+        self, intervals: List[List[int]], newInterval: List[int]
+    ) -> List[List[int]]:
         st, ed = newInterval
         ans = []
         insert = False

solution/0100-0199/0155.Min Stack/Solution.py

@@ -1,5 +1,4 @@
 class MinStack:
-
     def __init__(self):
         self.stk1 = []
         self.stk2 = [inf]