Create depth-of-bst-given-insertion-order.py

Author: kamyu104

Python/depth-of-bst-given-insertion-order.py

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+# Time:  O(nlogn)
+# Space: O(n)
+
+import sortedcontainers
+
+
+class Solution(object):
+    def maxDepthBST(self, order):
+        """
+        :type order: List[int]
+        :rtype: int
+        """
+        depths = sortedcontainers.SortedDict({float("-inf"):0, float("inf"):0})
+        values_view = depths.values()
+        result = 0
+        for x in order:
+            i = depths.bisect_right(x)
+            depths[x] = max(values_view[i-1:i+1])+1
+            result = max(result, depths[x])
+        return result