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# Transpose
Given an input text output it transposed.
Roughly explained, the transpose of a matrix:
```text
ABC
DEF
```
is given by:
```text
AD
BE
CF
```
Rows become columns and columns become rows. See <https://en.wikipedia.org/wiki/Transpose>.
If the input has rows of different lengths, this is to be solved as follows:
- Pad to the left with spaces.
- Don't pad to the right.
Therefore, transposing this matrix:
```text
ABC
DE
```
results in:
```text
AD
BE
C
```
And transposing:
```text
AB
DEF
```
results in:
```text
AD
BE
F
```
In general, all characters from the input should also be present in the transposed output.
That means that if a column in the input text contains only spaces on its bottom-most row(s),
the corresponding output row should contain the spaces in its right-most column(s).
## Running tests
Execute the tests with:
```bash
$ elixir transpose_test.exs
```
### Pending tests
In the test suites, all but the first test have been skipped.
Once you get a test passing, you can unskip the next one by
commenting out the relevant `@tag :pending` with a `#` symbol.
For example:
```elixir
# @tag :pending
test "two characters in a row" do
input= "AB"
expected =
"A\n" <>
"B"
assert Transpose.transpose(input) == expected
end
```
Or, you can enable all the tests by commenting out the
`ExUnit.configure` line in the test suite.
```elixir
# ExUnit.configure exclude: :pending, trace: true
```
For more detailed information about the Elixir track, please
see the [help page](http://exercism.io/languages/elixir).
## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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