逆转字符串

palindrome.py

@@ -0,0 +1,8 @@
+#! /usr/bin/env python3
+# -*- coding:utf-8 -*-
+def is_palindrome(word):
+    return word == word[::-1]
+
+if __name__ == '__main__':
+    s = 'racecar'
+    print(is_palindrome(s))

pig_latin.py

@@ -0,0 +1,10 @@
+#! /usr/bin/env python3
+#  -*-  coding: utf-8 -*-
+import re
+
+def pig_latin(word):
+    return re.match('(.)(?!=[aeiou])(.*)', word).expand(r'\2-\1ay')
+
+if __name__ == '__main__':
+    s = 'banana'
+    print(pig_latin(s))

reversed_string.py

@@ -0,0 +1,8 @@
+#! /usr/bin/env python3
+# *_* coding:utf-8 *_*
+def reversed_string(string):
+    return string[::-1]
+
+if __name__ == '__main__':
+    s = 'Hello World'
+    print(reversed_string(s))

vowel_counter.py

@@ -0,0 +1,16 @@
+#! /usr/bin/env python3
+# -*- coding:utf-8 -*-
+from collections import Counter
+
+def vowel_counter(string):
+    c = Counter(string.lower())
+    vowel = 'aeiou'
+    count = 0
+    for ch in vowel:
+        print(ch, c[ch])
+        count += c[ch]
+    print('Total vowel:', count)
+
+if __name__ == '__main__':
+    s = 'Hello World'
+    vowel_counter(s)