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Generate the exercise READMEs from the new template
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# Accumulate | ||
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Implement the `accumulate` operation, which, given a collection and an | ||
operation to perform on each element of the collection, returns a new | ||
collection containing the result of applying that operation to each element of | ||
the input collection. | ||
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Given the collection of numbers: | ||
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- 1, 2, 3, 4, 5 | ||
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And the operation: | ||
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- square a number (`x => x * x`) | ||
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Your code should be able to produce the collection of squares: | ||
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- 1, 4, 9, 16, 25 | ||
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Check out the test suite to see the expected function signature. | ||
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## Restrictions | ||
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Keep your hands off that collect/map/fmap/whatchamacallit functionality | ||
provided by your standard library! | ||
Solve this one yourself using other basic tools instead. | ||
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Lisp specific: it's perfectly fine to use `MAPCAR` or the equivalent, | ||
as this is idiomatic Lisp, not a library function. | ||
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## Hints | ||
This exercise requires you to write an extension method. For more information, see [this page](https://msdn.microsoft.com/en-us//library/bb383977.aspx). | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
## Source | ||
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Conversation with James Edward Gray II [https://twitter.com/jeg2](https://twitter.com/jeg2) | ||
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## 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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# Acronym | ||
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Convert a phrase to its acronym. | ||
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Techies love their TLA (Three Letter Acronyms)! | ||
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Help generate some jargon by writing a program that converts a long name | ||
like Portable Network Graphics to its acronym (PNG). | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
## Source | ||
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Julien Vanier [https://github.com/monkbroc](https://github.com/monkbroc) | ||
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## 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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# All Your Base | ||
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Convert a number, represented as a sequence of digits in one base, to any other base. | ||
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Implement general base conversion. Given a number in base **a**, | ||
represented as a sequence of digits, convert it to base **b**. | ||
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## Note | ||
- Try to implement the conversion yourself. | ||
Do not use something else to perform the conversion for you. | ||
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## About [Positional Notation](https://en.wikipedia.org/wiki/Positional_notation) | ||
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In positional notation, a number in base **b** can be understood as a linear | ||
combination of powers of **b**. | ||
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The number 42, *in base 10*, means: | ||
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(4 * 10^1) + (2 * 10^0) | ||
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The number 101010, *in base 2*, means: | ||
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(1 * 2^5) + (0 * 2^4) + (1 * 2^3) + (0 * 2^2) + (1 * 2^1) + (0 * 2^0) | ||
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The number 1120, *in base 3*, means: | ||
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(1 * 3^3) + (1 * 3^2) + (2 * 3^1) + (0 * 3^0) | ||
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I think you got the idea! | ||
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*Yes. Those three numbers above are exactly the same. Congratulations!* | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
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## 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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# Allergies | ||
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Given a person's allergy score, determine whether or not they're allergic to a given item, and their full list of allergies. | ||
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An allergy test produces a single numeric score which contains the | ||
information about all the allergies the person has (that they were | ||
tested for). | ||
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The list of items (and their value) that were tested are: | ||
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* eggs (1) | ||
* peanuts (2) | ||
* shellfish (4) | ||
* strawberries (8) | ||
* tomatoes (16) | ||
* chocolate (32) | ||
* pollen (64) | ||
* cats (128) | ||
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So if Tom is allergic to peanuts and chocolate, he gets a score of 34. | ||
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Now, given just that score of 34, your program should be able to say: | ||
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- Whether Tom is allergic to any one of those allergens listed above. | ||
- All the allergens Tom is allergic to. | ||
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Note: a given score may include allergens **not** listed above (i.e. | ||
allergens that score 256, 512, 1024, etc.). Your program should | ||
ignore those components of the score. For example, if the allergy | ||
score is 257, your program should only report the eggs (1) allergy. | ||
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## Hints | ||
This exercise requires you to use bitwise operations. For more information, see [this page](https://msdn.microsoft.com/en-us/library/6a71f45d.aspx). | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
## Source | ||
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Jumpstart Lab Warm-up [http://jumpstartlab.com](http://jumpstartlab.com) | ||
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## 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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# Alphametics | ||
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Write a function to solve alphametics puzzles. | ||
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[Alphametics](https://en.wikipedia.org/wiki/Alphametics) is a puzzle where | ||
letters in words are replaced with numbers. | ||
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For example `SEND + MORE = MONEY`: | ||
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``` | ||
S E N D | ||
M O R E + | ||
----------- | ||
M O N E Y | ||
``` | ||
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Replacing these with valid numbers gives: | ||
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``` | ||
9 5 6 7 | ||
1 0 8 5 + | ||
----------- | ||
1 0 6 5 2 | ||
``` | ||
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This is correct because every letter is replaced by a different number and the | ||
words, translated into numbers, then make a valid sum. | ||
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Each letter must represent a different digit, and the leading digit of | ||
a multi-digit number must not be zero. | ||
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Write a function to solve alphametics puzzles. | ||
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## Hints | ||
- To parse the text, you could try to use the [Sprache](https://github.com/sprache/Sprache/blob/develop/README.md) library. You can also find a good tutorial [here](https://www.thomaslevesque.com/2017/02/23/easy-text-parsing-in-c-with-sprache/). | ||
- You can solve this exercise with a brute force algorithm, but this will possibly have a poor runtime performance. | ||
Try to find a more sophisticated solution. | ||
- Hint: You could try the column-wise addition algorithm that is usually taught in school. | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
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## 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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# Anagram | ||
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Given a word and a list of possible anagrams, select the correct sublist. | ||
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Given `"listen"` and a list of candidates like `"enlists" "google" | ||
"inlets" "banana"` the program should return a list containing | ||
`"inlets"`. | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
## Source | ||
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Inspired by the Extreme Startup game [https://github.com/rchatley/extreme_startup](https://github.com/rchatley/extreme_startup) | ||
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## 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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# Atbash Cipher | ||
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Create an implementation of the atbash cipher, an ancient encryption system created in the Middle East. | ||
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The Atbash cipher is a simple substitution cipher that relies on | ||
transposing all the letters in the alphabet such that the resulting | ||
alphabet is backwards. The first letter is replaced with the last | ||
letter, the second with the second-last, and so on. | ||
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An Atbash cipher for the Latin alphabet would be as follows: | ||
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```plain | ||
Plain: abcdefghijklmnopqrstuvwxyz | ||
Cipher: zyxwvutsrqponmlkjihgfedcba | ||
``` | ||
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It is a very weak cipher because it only has one possible key, and it is | ||
a simple monoalphabetic substitution cipher. However, this may not have | ||
been an issue in the cipher's time. | ||
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Ciphertext is written out in groups of fixed length, the traditional group size | ||
being 5 letters, and punctuation is excluded. This is to make it harder to guess | ||
things based on word boundaries. | ||
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## Examples | ||
- Encoding `test` gives `gvhg` | ||
- Decoding `gvhg` gives `test` | ||
- Decoding `gsvjf rxpyi ldmul cqfnk hlevi gsvoz abwlt` gives `thequickbrownfoxjumpsoverthelazydog` | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
## Source | ||
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Wikipedia [http://en.wikipedia.org/wiki/Atbash](http://en.wikipedia.org/wiki/Atbash) | ||
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## 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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# Bank Account | ||
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Simulate a bank account supporting opening/closing, withdrawals, and deposits | ||
of money. Watch out for concurrent transactions! | ||
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A bank account can be accessed in multiple ways. Clients can make | ||
deposits and withdrawals using the internet, mobile phones, etc. Shops | ||
can charge against the account. | ||
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Create an account that can be accessed from multiple threads/processes | ||
(terminology depends on your programming language). | ||
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It should be possible to close an account; operations against a closed | ||
account must fail. | ||
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## Instructions | ||
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Run the test file, and fix each of the errors in turn. When you get the | ||
first test to pass, go to the first pending or skipped test, and make | ||
that pass as well. When all of the tests are passing, feel free to | ||
submit. | ||
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Remember that passing code is just the first step. The goal is to work | ||
towards a solution that is as readable and expressive as you can make | ||
it. | ||
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Have fun! | ||
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## Hints | ||
This exercise requires you to handle data related to currency and money. A normal approuch is to use the [Decimal](https://msdn.microsoft.com/en-US/library/system.decimal.aspx) struct to store currency values. | ||
Note though that you then only store the numeric value of a currency. | ||
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### Submitting Exercises | ||
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Note that, when trying to submit an exercise, make sure you're exercise file you're submitting is in the `exercism/csharp/<exerciseName>` directory. | ||
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For example, if you're submitting `bob.cs` for the Bob exercise, the submit command would be something like `exercism submit <path_to_exercism_dir>/csharp/bob/bob.cs`. | ||
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## 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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