27 lines
730 B
Text
27 lines
730 B
Text
F range_extract(lst)
|
||
[[Int]] r
|
||
V lenlst = lst.len
|
||
V i = 0
|
||
L i < lenlst
|
||
V low = lst[i]
|
||
L i < lenlst - 1 & lst[i] + 1 == lst[i + 1]
|
||
i++
|
||
V hi = lst[i]
|
||
I hi - low >= 2
|
||
r [+]= [low, hi]
|
||
E I hi - low == 1
|
||
r [+]= [low]
|
||
r [+]= [hi]
|
||
E
|
||
r [+]= [low]
|
||
i++
|
||
R r
|
||
|
||
F printr(ranges)
|
||
print(ranges.map(r -> (I r.len == 2 {r[0]‘-’r[1]} E String(r[0]))).join(‘,’))
|
||
|
||
L(lst) [[-8, -7, -6, -3, -2, -1, 0, 1, 3, 4, 5, 7,
|
||
8, 9, 10, 11, 14, 15, 17, 18, 19, 20],
|
||
[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]]
|
||
printr(range_extract(lst))
|