Create Day-8_Shifting_Letters.py

Author: Ram-95

Leetcode_30day_challenge/September_Challenge_2021/Day-8_Shifting_Letters.py

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+# Time: O(N) and Space: O(1)
+
+class Solution:
+    def shiftingLetters(self, s: str, shifts: List[int]) -> str:
+        a = ord('a')
+        d = {chr(c): c - a  for c in range(a, a+26)}
+        rd = {c - a: chr(c) for c in range(a, a+26)}
+        for i in range(len(shifts)-2,-1,-1):
+            shifts[i] += shifts[i+1]
+        
+        ans = ''
+        for i in range(len(s)):
+            ans += rd[(d[(s[i])] + shifts[i]) % 26]
+                
+        return ans