[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

data_structures/strings/allunique.py

@@ -6,6 +6,7 @@ def has_unique_chars(s):
         seen.add(char)
     return True
 
+
 # Example
 s = "abcdefga"
 print("Unique Characters:", has_unique_chars(s))

data_structures/strings/anagram.py

@@ -1,7 +1,9 @@
 from collections import Counter
 
+
 def are_anagrams(s1, s2):
     return Counter(s1) == Counter(s2)
 
+
 # Example
 print("Anagram:", are_anagrams("listen", "silent"))

data_structures/strings/frequencyofeachchar.py

@@ -4,5 +4,6 @@ def char_frequency(s):
         freq[char] = freq.get(char, 0) + 1
     return freq
 
+
 # Example
 print(char_frequency("datastructure"))

data_structures/strings/reverseword.py

@@ -3,8 +3,9 @@ def reverse_words(sentence):
     stack = []
     for word in words:
         stack.append(word)
-    reversed_sentence = ' '.join(stack[::-1])
+    reversed_sentence = " ".join(stack[::-1])
     return reversed_sentence
 
+
 # Example
 print(reverse_words("Data Structures in Python"))