feat(11-container-with-most-water): add py3 solution

0011_container-with-most-water/python3/solution.py

@@ -0,0 +1,17 @@
+class Solution:
+    def maxArea(self, height: List[int]) -> int:
+        left = 0
+        right = len(height) - 1
+        
+        max_area = float("-inf")
+        while left < right:
+            if height[left] <= height[right]:
+                area = height[left] * (right - left)
+                max_area = max(max_area, area)
+                left += 1
+            else:
+                area = height[right] * (right - left)
+                max_area = max(max_area, area)
+                right -= 1
+        
+        return max_area