Create can-make-palindrome-from-substring.py

Author: kamyu104

Diff for: Python/can-make-palindrome-from-substring.py

@@ -0,0 +1,20 @@
+# Time:  O(m + n), m is the number of queries, n is the length of s
+# Space: O(n)
+
+import itertools
+
+
+class Solution(object):
+    def canMakePaliQueries(self, s, queries):
+        """
+        :type s: str
+        :type queries: List[List[int]]
+        :rtype: List[bool]
+        """
+        CHARSET_SIZE = 26
+        curr, count = [0]*CHARSET_SIZE, [[0]*CHARSET_SIZE]
+        for c in s:
+            curr[ord(c)-ord('a')] += 1
+            count.append(curr[:])
+        return [sum((b-a)%2 for a, b in itertools.izip(count[left], count[right+1]))//2 <= k
+                for left, right, k in queries]