Create delete-columns-to-make-sorted-iii.py

Author: kamyu104

Python/delete-columns-to-make-sorted-iii.py

@@ -0,0 +1,15 @@
+# Time:  O(n * l^2)
+# Space: O(l)
+
+class Solution(object):
+    def minDeletionSize(self, A):
+        """
+        :type A: List[str]
+        :rtype: int
+        """
+        dp = [1] * len(A[0])
+        for j in xrange(1, len(A[0])):
+            for i in xrange(j):
+                if all(A[k][i] <= A[k][j] for k in xrange(len(A))):
+                    dp[j] = max(dp[j], dp[i]+1)
+        return len(A[0]) - max(dp)