Create perform-string-shifts.py

Author: kamyu104

Python/perform-string-shifts.py

@@ -0,0 +1,18 @@
+# Time:  O(n + l)
+# Space: O(l)
+
+class Solution(object):
+    def stringShift(self, s, shift):
+        """
+        :type s: str
+        :type shift: List[List[int]]
+        :rtype: str
+        """
+        left_shifts = 0
+        for direction, amount in shift:
+            if not direction:
+                left_shifts += amount
+            else:
+                left_shifts -= amount
+        left_shifts %= len(s)
+        return s[left_shifts:] + s[:left_shifts]