Add Python solution of Split a String in Balanced Strings Problem (#37)

Author: Nour-Grati

Diff for: Python/split-a-string-in-balanced-strings.py

@@ -0,0 +1,25 @@
+class Solution:
+    """
+    Time Complexity: O(N)
+    Space Complexity: O(1)
+    """
+
+    def balanced_string_split(self, s: str) -> int:
+        # initialize variables
+        L_count, R_count = 0, 0
+        balanced_substring_count = 0
+
+        # parse the string
+        for char in s:
+
+            # update the number of Ls and the number of Rs so far
+            if char == 'L':
+                L_count += 1
+            elif char == 'R':
+                R_count += 1
+
+            # if the string is balanced, increment the balanced substrings count and reset the counters
+            if L_count == R_count:
+                balanced_substring_count += 1
+                L_count, R_count = 0, 0
+        return balanced_substring_count

Diff for: README.md

@@ -109,6 +109,8 @@ Check out ---> [Sample PR](https://github.com/codedecks-in/LeetCode-Solutions/pu
 | 383 | [Ransom Note](https://leetcode.com/problems/ransom-note/)                             | [Java](./Java/ransom-note.java)               | _O(1)_ | _O(n)_ | Easy       |     | Character Count |
 | 151 | [Reverse Words in a String](https://leetcode.com/problems/reverse-words-in-a-string/) | [Java](./Java/reverse-words-in-a-string.java) | _O(1)_ | _O(n)_ | Medium     |     |                 |
 | 520 | [Detect Capital Use](https://leetcode.com/problems/detect-capital/) | [Java](./Java/detect-capital-use.java)                                    | _O(n)_ | _O(1)_ | Easy     |     |           |
+| 1221 | [Split a String in Balanced Strings](https://leetcode.com/problems/split-a-string-in-balanced-strings/) | [Python](./Python/split-a-string-in-balanced-strings.py)| _O(n)_ | _O(1)_ | Easy     |     |           |
+
 
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@@ -329,6 +331,8 @@ DISCLAIMER: This above mentioned resources have affiliate links, which means if
 | [Sachin Singh Negi](https://github.com/sachinnegi) <br> <img src="https://github.com/sachinnegi.png" width="100" height="100">       | India   | Python               | [Twitter](https://twitter.com/SachinSinghNe17)<br>[Leetcode](https://leetcode.com/negisachin688/)<br>[Hackerrrak](https://www.hackerrank.com/negisachin688)  |
 | [Girish Thatte](https://github.com/girishgr8/) <br> <img src="https://github.com/girishgr8.png" width="100" height="100">            | India   | Java                 | [Leetcode](https://leetcode.com/girish13/) <br> [Hackerrank](https://www.hackerrank.com/procoder_13) <br> [Codechef](https://www.codechef.com/procoder_13)   |
 | [Kevin Chittilapilly](https://github.com/KevinChittilapilly) <br> <img src="https://github.com/KevinChittilapilly.png" width="100" height="100">            | India   | Java                 | [Leetcode](https://leetcode.com/being_kevin/) <br> [Hackerrank](https://www.hackerrank.com/ckevinvarghese11) <br> [Kaggle](https://www.kaggle.com/kevinchittilapilly)   |
+| [Nour Grati](https://github.com/Nour-Grati) <br> <img src="https://github.com/Nour-Grati.png" width="100" height="100">            | Tunisia   | Python                | [Leetcode](https://leetcode.com/nourgrati/) <br> [Hackerrank](https://www.hackerrank.com/noor_grati) <br> [Twitter](https://twitter.com/GratiNour1)         |
+
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