Dec 3

Author: siddydutta

2024-12-December-LeetCoding-Challenge/Adding Spaces to a String.py

@@ -0,0 +1,31 @@
+from typing import List
+
+
+class Solution:
+    def addSpaces(self, s: str, spaces: List[int]) -> str:
+        res = ''
+        ptr = 0
+        for i in range(len(s)):
+            if ptr < len(spaces) and i == spaces[ptr]:
+                res += ' '
+                ptr += 1
+            res += s[i]
+        return res
+
+
+def main():
+    s = 'LeetcodeHelpsMeLearn'
+    spaces = [8, 13, 15]
+    assert Solution().addSpaces(s, spaces) == 'Leetcode Helps Me Learn'
+
+    s = 'icodeinpython'
+    spaces = [1, 5, 7, 9]
+    assert Solution().addSpaces(s, spaces) == 'i code in py thon'
+
+    s = 'spacing'
+    spaces = [0, 1, 2, 3, 4, 5, 6]
+    assert Solution().addSpaces(s, spaces) == ' s p a c i n g'
+
+
+if __name__ == '__main__':
+    main()

2024-12-December-LeetCoding-Challenge/README.md

@@ -5,7 +5,7 @@
 | --- | --- | --- | --- |
 | December 1  | [1346. Check If N and Its Double Exist](https://leetcode.com/problems/check-if-n-and-its-double-exist/) | Easy | Solved |
 | December 2  | [1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence](https://leetcode.com/problems/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence/) | Easy | Solved |
-| December 3  | []() |  |  |
+| December 3  | [2109. Adding Spaces to a String](https://leetcode.com/problems/adding-spaces-to-a-string/) | Medium | Solved |
 | December 4  | []() |  |  |
 | December 5  | []() |  |  |
 | December 6  | []() |  |  |
@@ -39,5 +39,5 @@
 | Level  | Problems | Solved | Unsolved |
 | ---    | --- | --- | --- |
 | Easy   | 2 | 2 | 0 |
-| Medium | 0 | 0 | 0 |
+| Medium | 1 | 1 | 0 |
 | Hard   | 0 | 0 | 0 |