Added a new exercice

Author: rougier

README.rst

@@ -494,6 +494,16 @@ Adept
       R[r] = Z[z]
 
 
+2. Consider an array Z = [1,2,3,4,5,6,7,8,9,10,11,12,13,14], how to generate an
+   array R = [[1,2,3,4], [2,3,4,5], [3,4,5,6], ..., [11,12,13,14]] ?
+
+   .. code:: python
+
+      # Paul (from stackoverflow)
+
+      Z = np.arange(1,15)
+      R = as_strided(Z,(11,4),(4,4))
+
 
 
 
@@ -552,5 +562,7 @@ Expert
 Master
 ======
 
+
+
 Archmaster
 ==========