September 2017 Update

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

@@ -1,19 +0,0 @@
-def rangeextract(lst):
-    lenlst = len(lst)
-    i, ranges = 0, []
-    while i< lenlst:
-        low = lst[i]
-        while i <lenlst-1 and lst[i]+1 == lst[i+1]: i +=1
-        hi = lst[i]
-        ranges.append(
-            '%i-%i'  % (low, hi) if hi - low >= 2 else
-            ('%i,%i' % (low, hi) if hi - low == 1 else
-             '%i' % low) )
-        i += 1
-    return ','.join(ranges)
-
-lst = [ 0,  1,  2,  4,  6,  7,  8, 11, 12, 14,
-       15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
-       25, 27, 28, 29, 30, 31, 32, 33, 35, 36,
-       37, 38, 39]
-print(rangeextract(lst))

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

@@ -1,26 +0,0 @@
-def grouper(lst):
-    src = iter(lst)
-    acc = [ next(src) ]
-    for i in src:
-        if i == acc[-1] + 1: acc.append(i)
-        else:
-            yield acc
-            acc = [i]
-    yield acc
-    raise StopIteration()
-
-def rangegrouper(lst):
-    for g in grouper(lst):
-        if len(g) == 2:
-            # satisfy rule that only runs longer than 2 are grouped
-            a,b = g
-            yield [a]
-            yield [b]
-        else: yield g
-    raise StopIteration()
-
-input= [0,  1,  2,  4,  6,  7,  8, 11, 12, 14,15, 16, 17, 18, 19, 20, 21, 22, 23, 24,   25, 27, 28, 29, 30, 31, 32, 33, 35, 36,37, 38, 39]
-print list(rangegrouper(input)) # print groups
-as_strings= ['%s%s%s' % ((g[0],'-',g[-1]) if len(g) > 1 else (g[0],'','')) for g in rangegrouper(input)]
-print as_strings
-print ', '.join(as_strings)