Create string.py

src/utils/string.py

@@ -0,0 +1,27 @@
+def reverse_string(s: str) -> str:
+    """
+    Returns the reverse of the given string.
+    """
+    return s[::-1]
+
+def truncate_string(s: str, length: int) -> str:
+    """
+    Returns the given string truncated to the given length.
+    """
+    if len(s) > length:
+        return s[:length] + '...'
+    else:
+        return s
+
+def count_words(s: str) -> int:
+    """
+    Returns the number of words in the given string.
+    """
+    return len(s.split())
+
+def count_vowels(s: str) -> int:
+    """
+    Returns the number of vowels in the given string.
+    """
+    vowels = 'aeiou'
+    return sum(1 for c in s.lower() if c in vowels)