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SimaDovakinSimaDovakin
authoredAug 2, 2024··
secret-handshake-exercise: Added new exercise (#134)
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‎config.json

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"practices": [],
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"prerequisites": [],
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"difficulty": 4
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},
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{
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"slug": "secret-handshake",
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"name": "Secret Handshake",
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"uuid": "17246658-c302-4df0-adde-92dac6f77a8d",
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"practices": [],
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"prerequisites": [],
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"difficulty": 2
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}
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]
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},

‎exercises/practice/secret-handshake/.docs/instructions.md

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# Instructions
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Your task is to convert a number between 1 and 31 to a sequence of actions in the secret handshake.
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The sequence of actions is chosen by looking at the rightmost five digits of the number once it's been converted to binary.
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Start at the right-most digit and move left.
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The actions for each number place are:
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```plaintext
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00001 = wink
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00010 = double blink
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00100 = close your eyes
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01000 = jump
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10000 = Reverse the order of the operations in the secret handshake.
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```
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Let's use the number `9` as an example:
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- 9 in binary is `1001`.
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- The digit that is farthest to the right is 1, so the first action is `wink`.
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- Going left, the next digit is 0, so there is no double-blink.
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- Going left again, the next digit is 0, so you leave your eyes open.
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- Going left again, the next digit is 1, so you jump.
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That was the last digit, so the final code is:
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```plaintext
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wink, jump
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```
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Given the number 26, which is `11010` in binary, we get the following actions:
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- double blink
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- jump
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- reverse actions
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The secret handshake for 26 is therefore:
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```plaintext
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jump, double blink
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```
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~~~~exercism/note
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If you aren't sure what binary is or how it works, check out [this binary tutorial][intro-to-binary].
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[intro-to-binary]: https://medium.com/basecs/bits-bytes-building-with-binary-13cb4289aafa
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~~~~

‎exercises/practice/secret-handshake/.docs/introduction.md

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# Introduction
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You are starting a secret coding club with some friends and friends-of-friends.
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Not everyone knows each other, so you and your friends have decided to create a secret handshake that you can use to recognize that someone is a member.
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You don't want anyone who isn't in the know to be able to crack the code.
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You've designed the code so that one person says a number between 1 and 31, and the other person turns it into a series of actions.

‎exercises/practice/secret-handshake/.meta/config.json

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{
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"authors": [
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"SimaDovakin"
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],
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"files": {
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"solution": [
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"secretHandshake.u"
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],
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"test": [
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"secretHandshake.test.u"
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],
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"example": [
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".meta/examples/secretHandshake.example.u"
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]
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},
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"blurb": "Given a decimal number, convert it to the appropriate sequence of events for a secret handshake.",
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"source": "Bert, in Mary Poppins",
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"source_url": "https://www.imdb.com/title/tt0058331/quotes/?item=qt0437047"
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}

‎exercises/practice/secret-handshake/.meta/examples/secretHandshake.example.u

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unique type secretHandshake.Command
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= Wink
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| DoubleBlink
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| CloseYourEyes
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| Jump
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secretHandshake.commands : Nat -> [Command]
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secretHandshake.commands encodedMessage =
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collectCommand = cases
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acc, (code, command) | and encodedMessage code != 0 -> command(acc)
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acc, _ -> acc
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reverseOrNot message cmds =
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match and message 16 != 0 with
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true -> cmds
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false -> List.reverse cmds
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[
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(1, List.cons Wink),
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(2, List.cons DoubleBlink),
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(4, List.cons CloseYourEyes),
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(8, List.cons Jump)
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]
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|> List.foldLeft collectCommand []
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|> reverseOrNot encodedMessage

‎exercises/practice/secret-handshake/.meta/testAnnotation.json

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[
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{
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"name": "secretHandshake.commands.tests.ex1",
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"test_code": "expect ([Wink] === secretHandshake.commands 1)\n |> Test.label \"wink for 1\""
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},
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{
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"name": "secretHandshake.commands.tests.ex2",
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"test_code": "expect ([DoubleBlink] === secretHandshake.commands 2)\n |> Test.label \"double blink for 10\""
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},
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{
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"name": "secretHandshake.commands.tests.ex3",
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"test_code": "expect ([CloseYourEyes] === secretHandshake.commands 4)\n |> Test.label \"close your eyes for 100\""
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},
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{
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"name": "secretHandshake.commands.tests.ex4",
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"test_code": "expect ([Jump] === secretHandshake.commands 8)\n |> Test.label \"jump for 1000\""
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},
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{
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"name": "secretHandshake.commands.tests.ex5",
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"test_code": "expect ([Wink, DoubleBlink] === secretHandshake.commands 3)\n |> Test.label \"combine two actions\""
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},
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{
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"name": "secretHandshake.commands.tests.ex6",
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"test_code": "expect ([DoubleBlink, Wink] === secretHandshake.commands 19)\n |> Test.label \"reverse two actions\""
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},
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{
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"name": "secretHandshake.commands.tests.ex7",
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"test_code": "expect ([Jump] === secretHandshake.commands 24)\n |> Test.label \"reversing one action gives the same action\""
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},
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{
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"name": "secretHandshake.commands.tests.ex8",
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"test_code": "expect ([] === secretHandshake.commands 16)\n |> Test.label \"reversing no actions still gives no actions\""
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},
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{
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"name": "secretHandshake.commands.tests.ex9",
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"test_code": "expect ([Wink, DoubleBlink, CloseYourEyes, Jump] === secretHandshake.commands 15)\n |> Test.label \"all possible actions\""
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},
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{
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"name": "secretHandshake.commands.tests.ex10",
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"test_code": "expect ([Jump, CloseYourEyes, DoubleBlink, Wink] === secretHandshake.commands 31)\n |> Test.label \"reverse all possible actions\""
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},
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{
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"name": "secretHandshake.commands.tests.ex11",
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"test_code": "expect ([] === secretHandshake.commands 0)\n |> Test.label \"do nothing for zero\""
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}
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]

‎exercises/practice/secret-handshake/.meta/testLoader.md

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# Testing transcript for secret-handshake exercise
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```ucm
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.> load ./secretHandshake.u
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.> add
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.> load ./secretHandshake.test.u
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.> add
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.> move.term secretHandshake.tests tests
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```

‎exercises/practice/secret-handshake/.meta/tests.toml

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# This is an auto-generated file.
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#
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# Regenerating this file via `configlet sync` will:
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# - Recreate every `description` key/value pair
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# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
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# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
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# - Preserve any other key/value pair
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#
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# As user-added comments (using the # character) will be removed when this file
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# is regenerated, comments can be added via a `comment` key.
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[b8496fbd-6778-468c-8054-648d03c4bb23]
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description = "wink for 1"
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[83ec6c58-81a9-4fd1-bfaf-0160514fc0e3]
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description = "double blink for 10"
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[0e20e466-3519-4134-8082-5639d85fef71]
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description = "close your eyes for 100"
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[b339ddbb-88b7-4b7d-9b19-4134030d9ac0]
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description = "jump for 1000"
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[40499fb4-e60c-43d7-8b98-0de3ca44e0eb]
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description = "combine two actions"
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[9730cdd5-ef27-494b-afd3-5c91ad6c3d9d]
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description = "reverse two actions"
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[0b828205-51ca-45cd-90d5-f2506013f25f]
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description = "reversing one action gives the same action"
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[9949e2ac-6c9c-4330-b685-2089ab28b05f]
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description = "reversing no actions still gives no actions"
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[23fdca98-676b-4848-970d-cfed7be39f81]
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description = "all possible actions"
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[ae8fe006-d910-4d6f-be00-54b7c3799e79]
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description = "reverse all possible actions"
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[3d36da37-b31f-4cdb-a396-d93a2ee1c4a5]
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description = "do nothing for zero"

‎exercises/practice/secret-handshake/secretHandshake.test.u

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secretHandshake.commands.tests.ex1 =
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expect ([Wink] === secretHandshake.commands 1)
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|> Test.label "wink for 1"
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secretHandshake.commands.tests.ex2 =
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expect ([DoubleBlink] === secretHandshake.commands 2)
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|> Test.label "double blink for 10"
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secretHandshake.commands.tests.ex3 =
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expect ([CloseYourEyes] === secretHandshake.commands 4)
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|> Test.label "close your eyes for 100"
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secretHandshake.commands.tests.ex4 =
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expect ([Jump] === secretHandshake.commands 8)
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|> Test.label "jump for 1000"
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secretHandshake.commands.tests.ex5 =
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expect ([Wink, DoubleBlink] === secretHandshake.commands 3)
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|> Test.label "combine two actions"
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secretHandshake.commands.tests.ex6 =
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expect ([DoubleBlink, Wink] === secretHandshake.commands 19)
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|> Test.label "reverse two actions"
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secretHandshake.commands.tests.ex7 =
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expect ([Jump] === secretHandshake.commands 24)
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|> Test.label "reversing one action gives the same action"
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secretHandshake.commands.tests.ex8 =
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expect ([] === secretHandshake.commands 16)
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|> Test.label "reversing no actions still gives no actions"
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secretHandshake.commands.tests.ex9 =
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expect ([Wink, DoubleBlink, CloseYourEyes, Jump] === secretHandshake.commands 15)
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|> Test.label "all possible actions"
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secretHandshake.commands.tests.ex10 =
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expect ([Jump, CloseYourEyes, DoubleBlink, Wink] === secretHandshake.commands 31)
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|> Test.label "reverse all possible actions"
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secretHandshake.commands.tests.ex11 =
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expect ([] === secretHandshake.commands 0)
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|> Test.label "do nothing for zero"
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test> secretHandshake.tests = runAll [
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secretHandshake.commands.tests.ex1,
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secretHandshake.commands.tests.ex2,
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secretHandshake.commands.tests.ex3,
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secretHandshake.commands.tests.ex4,
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secretHandshake.commands.tests.ex5,
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secretHandshake.commands.tests.ex6,
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secretHandshake.commands.tests.ex7,
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secretHandshake.commands.tests.ex8,
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secretHandshake.commands.tests.ex9,
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secretHandshake.commands.tests.ex10,
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secretHandshake.commands.tests.ex11
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]

‎exercises/practice/secret-handshake/secretHandshake.u

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unique type secretHandshake.Command
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= Wink
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| DoubleBlink
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| CloseYourEyes
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| Jump
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secretHandshake.commands : Nat -> [Command]
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secretHandshake.commands = todo "implement commands"

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