all tasks

Task/Sorting-algorithms-Pancake-sort/Python/sorting-algorithms-pancake-sort-1.py

@@ -0,0 +1,20 @@
+tutor = False
+
+def pancakesort(data):
+    if len(data) <= 1:
+        return data
+    if tutor: print()
+    for size in range(len(data), 1, -1):
+        maxindex = max(range(size), key=data.__getitem__)
+        if maxindex+1 != size:
+            # This indexed max needs moving
+            if maxindex != 0:
+                # Flip the max item to the left
+                if tutor: print('With: %r doflip  %i'
+                                % ( ' '.join(str(x) for x in data), maxindex+1 ))
+                data[:maxindex+1] = reversed(data[:maxindex+1])
+            # Flip it into its final position
+            if tutor: print('With: %r  doflip %i'
+                                % ( ' '.join(str(x) for x in data), size ))
+            data[:size] = reversed(data[:size])
+    if tutor: print()

Task/Sorting-algorithms-Pancake-sort/Python/sorting-algorithms-pancake-sort-2.py

@@ -0,0 +1,10 @@
+if __name__ == '__main__':
+    import random
+
+    tutor = True
+    data = list('123456789')
+    while data == sorted(data):
+        random.shuffle(data)
+    print('Original List: %r' % ' '.join(data))
+    pancakesort(data)
+    print('Pancake Sorted List: %r' % ' '.join(data))