add solutions week 278 in python

1 files changed, 27 insertions, 0 deletions

diff --git a/challenge-278/steven-wilson/python/ch-2.py b/challenge-278/steven-wilson/python/ch-2.py
new file mode 100644
index 0000000000..2c6f1e5423
--- /dev/null
+++ b/challenge-278/steven-wilson/python/ch-2.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+
+def reverse_word(word, char):
+    """ Given a word and a character, replace the substring up to and including
+    the character with its characters sorted alphabetically. If the character
+    doesn’t exist then DON'T do anything.
+
+    >>> reverse_word("challenge", "e")
+    'acehllnge'
+    >>> reverse_word("programming", "a")
+    'agoprrmming'
+    >>> reverse_word("champion", "b")
+    'champion'
+    """
+    position = word.find(char)
+
+    if position == -1:
+        return word
+
+    return "".join(sorted(word[:position+1])) + word[position+1:]
+
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod(verbose=True)