# 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).

## Setup

There are two different methods of getting set up to run the tests with Objective-C:

- Create an Xcode project with a test target which will run the tests.
- Use the ruby gem `objc` as a test runner utility.

Both are described in more detail here: http://exercism.io/languages/objective-c

### Submitting Exercises

When submitting an exercise, make sure your solution file is in the same directory as the test code.

The submit command will look something like:

```shell
exercism submit <path-to-exercism-workspace>/objective-c/transpose/Transpose.m
```

You can find the Exercism workspace by running `exercism debug` and looking for the line beginning
with Workspace.

## Source

Reddit r/dailyprogrammer challenge #270 [Easy]. [https://www.reddit.com/r/dailyprogrammer/comments/4msu2x/challenge_270_easy_transpose_the_input_text](https://www.reddit.com/r/dailyprogrammer/comments/4msu2x/challenge_270_easy_transpose_the_input_text)

## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.