tasks a-s

Task/Range-expansion/Python/range-expansion-1.py

@@ -0,0 +1,11 @@
+def rangeexpand(txt):
+    lst = []
+    for r in txt.split(','):
+        if '-' in r[1:]:
+            r0, r1 = r[1:].split('-', 1)
+            lst += range(int(r[0] + r0), int(r1) + 1)
+        else:
+            lst.append(int(r))
+    return lst
+
+print(rangeexpand('-6,-3--1,3-5,7-11,14,15,17-20'))

Task/Range-expansion/Python/range-expansion-2.py

@@ -0,0 +1,11 @@
+import re
+
+def rangeexpand(txt):
+    lst = []
+    for rng in txt.split(','):
+        start,end = re.match('^(-?\d+)(?:-(-?\d+))?$', rng).groups()
+        if end:
+            lst.extend(xrange(int(start),int(end)+1))
+        else:
+            lst.append(int(start))
+    return lst