Create get-equal-substrings-within-budget.py

Author: kamyu104

Python/get-equal-substrings-within-budget.py

@@ -0,0 +1,18 @@
+# Time:  O(n)
+# Space: O(1)
+
+class Solution(object):
+    def equalSubstring(self, s, t, maxCost):
+        """
+        :type s: str
+        :type t: str
+        :type maxCost: int
+        :rtype: int
+        """
+        left = 0
+        for right in xrange(len(s)):
+            maxCost -= abs(ord(s[right])-ord(t[right]))
+            if maxCost < 0:
+                maxCost += abs(ord(s[left])-ord(t[left]))
+                left += 1
+        return (right+1)-left