How to print a jagged array vertically?

Question

I have an array like this:

arr = [['a', 'b', 'c', 'd'],
       ['e', 'f', 'g', 'h'],
       ['i', 'j']]

How to get the output like this?

str = aei bfj cg dh

So basically, how to print a jagged array vertically?

I believe that would be called printing the array _horizontally_. — martineau, Jan 21 '20 at 14:42

score 4 · Answer 1 · answered Jan 21 '20 at 13:34

4

from itertools import zip_longest
for row in zip_longest(*arr, fillvalue=''):
    print(' '.join(row))

answered Jan 21 '20 at 13:34

neuromantic99

77
4

score 3 · Accepted Answer · answered Jan 21 '20 at 13:33

You can use itertools.zip_longest to stride column-wise, and then filter out when None is encountered. Then pass that as a generator expression through str.join to create a single space-delimited string.

>>> import itertools
>>> ' '.join(''.join(filter(None, i)) for i in itertools.zip_longest(*arr))
'aei bfj cg dh'

How to print a jagged array vertically?

2 Answers2