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

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

data_structures/strings/allunique.py

@@ -1,4 +1,4 @@
 def has_unique_chars(s):
  seen = set()
  for char in s:
  if char in seen:
@@ -6,6 +6,7 @@
  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

@@ -1,8 +1,9 @@
 def char_frequency(s):
  freq = {}
  for char in s:
  freq[char] = freq.get(char, 0) + 1
  return freq
 
+
 # Example
 print(char_frequency("datastructure"))

data_structures/strings/reverseword.py

@@ -1,10 +1,11 @@
 def reverse_words(sentence):
  words = sentence.split()
  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"))