min max test (#1)

* implt minmax test

* fix return

* feedback

Author: hyojeongyunn

04-functions-modules/guide.md

@@ -1 +1,8 @@
-# functions and modules
+# functions and modules
+
+## MinMax
+- difficulty: ★☆☆
+- time: ~ 15m for beginners
+- background: list, iteration
+
+Implement `min`, `max` functions on your own.

04-functions-modules/minmax.py

@@ -0,0 +1,31 @@
+import random
+
+def myMin(iterable):
+    """
+    >>> myMin([7, 6, 5])
+    5
+    >>> myMin([3, 2, 5, 7, 8, 90, 5])
+    2
+    >>> sample = [i for i in range(100)]; \
+        random.shuffle(sample); \
+        myMin(sample)
+    0
+    """
+    # TODO
+
+def myMax(iterable):
+    """
+    >>> myMax([7, 6, 5])
+    7
+    >>> myMax([3, 2, 5, 7, 8, 90, 5])
+    90
+    >>> sample = [i for i in range(100)]; \
+        random.shuffle(sample); \
+        myMax(sample)
+    99
+    """
+    # TODO
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod(verbose=True)