Create maximum-building-height.py

Author: kamyu104

Python/maximum-building-height.py

@@ -0,0 +1,21 @@
+# Time:  O(nlogn)
+# Space: O(1)
+
+class Solution(object):
+    def maxBuilding(self, n, restrictions):
+        """
+        :type n: int
+        :type restrictions: List[List[int]]
+        :rtype: int
+        """
+        restrictions.extend([[1, 0], [n, n-1]])
+        restrictions.sort()
+        for i in reversed(xrange(len(restrictions)-1)):
+            restrictions[i][1] = min(restrictions[i][1], restrictions[i+1][1]+(restrictions[i+1][0]-restrictions[i][0]))
+        result = 0
+        for i in xrange(1, len(restrictions)):
+            restrictions[i][1] = min(restrictions[i][1], restrictions[i-1][1]+(restrictions[i][0]-restrictions[i-1][0]))
+            left, h1 = restrictions[i-1]
+            right, h2 = restrictions[i]
+            result = max(result, max(h1, h2)+((right-left)-abs(h1-h2))//2)
+        return result