Fix docstring and improve input validation in kth_lexicographic_permutation

yaadhuu · yaadhuu · commit 9f73cccf04c2 · 2026-01-23T01:59:51.000+05:30
diff --git a/maths/kth_lexicographic_permutation.py b/maths/kth_lexicographic_permutation.py
@@ -43,6 +43,7 @@ def kth_permutation(k, n):
     return permutation
 
 
+
 if __name__ == "__main__":
     import doctest
 
