62 lines
1.5 KiB
Markdown
62 lines
1.5 KiB
Markdown
# Diamond
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The diamond kata takes as its input a letter, and outputs it in a diamond
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shape. Given a letter, it prints a diamond starting with 'A', with the
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supplied letter at the widest point.
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## Requirements
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* The first row contains one 'A'.
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* The last row contains one 'A'.
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* All rows, except the first and last, have exactly two identical letters.
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* All rows have as many trailing spaces as leading spaces. (This might be 0).
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* The diamond is horizontally symmetric.
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* The diamond is vertically symmetric.
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* The diamond has a square shape (width equals height).
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* The letters form a diamond shape.
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* The top half has the letters in ascending order.
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* The bottom half has the letters in descending order.
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* The four corners (containing the spaces) are triangles.
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## Examples
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In the following examples, spaces are indicated by `·` characters.
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Diamond for letter 'A':
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```plain
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A
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```
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Diamond for letter 'C':
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```plain
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··A··
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·B·B·
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C···C
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·B·B·
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··A··
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```
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Diamond for letter 'E':
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```plain
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····A····
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···B·B···
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··C···C··
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·D·····D·
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E·······E
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·D·····D·
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··C···C··
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···B·B···
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····A····
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```
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## Source
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Seb Rose [http://claysnow.co.uk/recycling-tests-in-tdd/](http://claysnow.co.uk/recycling-tests-in-tdd/)
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## Submitting Incomplete Solutions
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It's possible to submit an incomplete solution so you can see how others have completed the exercise.
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