do looping from N to 1

[nischalinn]

Suppose I've some user-defined lists:
Say,

[1,2,3,5,6,8]
[1,2,3,4,5,6,7,8,9,10]

Suppose I've to split the list using user defined number, say N =3 for the first list.
Then the output will be:

for N = 3 [1,2,3]
for N-1 = 2 [5,6]
for N -2 = 1 [8]

say N =4 for the second list.
Then the output will be:

for N = 4 [1,2,3,4]
for N-1 = 3 [5,6,7]
for N -2 = 2 [8,9]
for N-3 = 1 [10]

So looping from N to 1. How can I get the output.

[dwblas]

Just a hint, but this is enough info to figure out the logic. And you should use a for or while loop to do it.

x=[1,2,3,4,5,6,7,8,9,10]
n=4
group=n
previous=0
print x[previous:n]
previous = n
group -= 1
n += group
print x[previous:n]