From 47499e081e09924ed6828cd711992b40e77960d1 Mon Sep 17 00:00:00 2001 From: Ryan Hartlage Date: Sat, 7 Sep 2024 08:14:21 -0400 Subject: [PATCH] Add wordy practice exercise --- config.json | 8 ++ exercises/practice/wordy/.busted | 5 + .../practice/wordy/.docs/instructions.md | 59 ++++++++++ exercises/practice/wordy/.meta/config.json | 17 +++ exercises/practice/wordy/.meta/example.lua | 31 +++++ exercises/practice/wordy/.meta/tests.toml | 79 +++++++++++++ exercises/practice/wordy/wordy.lua | 5 + exercises/practice/wordy/wordy_spec.lua | 111 ++++++++++++++++++ 8 files changed, 315 insertions(+) create mode 100644 exercises/practice/wordy/.busted create mode 100644 exercises/practice/wordy/.docs/instructions.md create mode 100644 exercises/practice/wordy/.meta/config.json create mode 100644 exercises/practice/wordy/.meta/example.lua create mode 100644 exercises/practice/wordy/.meta/tests.toml create mode 100644 exercises/practice/wordy/wordy.lua create mode 100644 exercises/practice/wordy/wordy_spec.lua diff --git a/config.json b/config.json index 3ac213b3..f9be7b09 100644 --- a/config.json +++ b/config.json @@ -1042,6 +1042,14 @@ "text_formatting" ] }, + { + "slug": "wordy", + "name": "Wordy", + "uuid": "37165dd0-bb19-4606-acfb-2a382c8bb274", + "practices": [], + "prerequisites": [], + "difficulty": 4 + }, { "slug": "rational-numbers", "name": "Rational Numbers", diff --git a/exercises/practice/wordy/.busted b/exercises/practice/wordy/.busted new file mode 100644 index 00000000..86b84e7c --- /dev/null +++ b/exercises/practice/wordy/.busted @@ -0,0 +1,5 @@ +return { + default = { + ROOT = { '.' } + } +} diff --git a/exercises/practice/wordy/.docs/instructions.md b/exercises/practice/wordy/.docs/instructions.md new file mode 100644 index 00000000..aafb9ee5 --- /dev/null +++ b/exercises/practice/wordy/.docs/instructions.md @@ -0,0 +1,59 @@ +# Instructions + +Parse and evaluate simple math word problems returning the answer as an integer. + +## Iteration 0 — Numbers + +Problems with no operations simply evaluate to the number given. + +> What is 5? + +Evaluates to 5. + +## Iteration 1 — Addition + +Add two numbers together. + +> What is 5 plus 13? + +Evaluates to 18. + +Handle large numbers and negative numbers. + +## Iteration 2 — Subtraction, Multiplication and Division + +Now, perform the other three operations. + +> What is 7 minus 5? + +2 + +> What is 6 multiplied by 4? + +24 + +> What is 25 divided by 5? + +5 + +## Iteration 3 — Multiple Operations + +Handle a set of operations, in sequence. + +Since these are verbal word problems, evaluate the expression from left-to-right, _ignoring the typical order of operations._ + +> What is 5 plus 13 plus 6? + +24 + +> What is 3 plus 2 multiplied by 3? + +15 (i.e. not 9) + +## Iteration 4 — Errors + +The parser should reject: + +- Unsupported operations ("What is 52 cubed?") +- Non-math questions ("Who is the President of the United States") +- Word problems with invalid syntax ("What is 1 plus plus 2?") diff --git a/exercises/practice/wordy/.meta/config.json b/exercises/practice/wordy/.meta/config.json new file mode 100644 index 00000000..97993ee0 --- /dev/null +++ b/exercises/practice/wordy/.meta/config.json @@ -0,0 +1,17 @@ +{ + "authors": ["ryanplusplus"], + "files": { + "solution": [ + "wordy.lua" + ], + "test": [ + "wordy_spec.lua" + ], + "example": [ + ".meta/example.lua" + ] + }, + "blurb": "Parse and evaluate simple math word problems returning the answer as an integer.", + "source": "Inspired by one of the generated questions in the Extreme Startup game.", + "source_url": "https://github.com/rchatley/extreme_startup" +} diff --git a/exercises/practice/wordy/.meta/example.lua b/exercises/practice/wordy/.meta/example.lua new file mode 100644 index 00000000..2c8132de --- /dev/null +++ b/exercises/practice/wordy/.meta/example.lua @@ -0,0 +1,31 @@ +local function answer(question) + local accumulator + + local remaining = question:gsub('%s*(%D+)%s+([-%d]+)', function(operator, operand) + operand = assert(tonumber(operand)) + + if operator == 'What is' then + accumulator = operand + elseif operator == 'plus' then + accumulator = accumulator + operand + elseif operator == 'minus' then + accumulator = accumulator - operand + elseif operator == 'multiplied by' then + accumulator = accumulator * operand + elseif operator == 'divided by' then + accumulator = accumulator / operand + else + error('Invalid question') + end + + return '' + end) + + if remaining ~= '?' then + error('Invalid question') + end + + return accumulator +end + +return { answer = answer } diff --git a/exercises/practice/wordy/.meta/tests.toml b/exercises/practice/wordy/.meta/tests.toml new file mode 100644 index 00000000..f812dfa9 --- /dev/null +++ b/exercises/practice/wordy/.meta/tests.toml @@ -0,0 +1,79 @@ +# This is an auto-generated file. +# +# Regenerating this file via `configlet sync` will: +# - Recreate every `description` key/value pair +# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications +# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion) +# - Preserve any other key/value pair +# +# As user-added comments (using the # character) will be removed when this file +# is regenerated, comments can be added via a `comment` key. + +[88bf4b28-0de3-4883-93c7-db1b14aa806e] +description = "just a number" + +[bb8c655c-cf42-4dfc-90e0-152fcfd8d4e0] +description = "addition" + +[79e49e06-c5ae-40aa-a352-7a3a01f70015] +description = "more addition" + +[b345dbe0-f733-44e1-863c-5ae3568f3803] +description = "addition with negative numbers" + +[cd070f39-c4cc-45c4-97fb-1be5e5846f87] +description = "large addition" + +[0d86474a-cd93-4649-a4fa-f6109a011191] +description = "subtraction" + +[30bc8395-5500-4712-a0cf-1d788a529be5] +description = "multiplication" + +[34c36b08-8605-4217-bb57-9a01472c427f] +description = "division" + +[da6d2ce4-fb94-4d26-8f5f-b078adad0596] +description = "multiple additions" + +[7fd74c50-9911-4597-be09-8de7f2fea2bb] +description = "addition and subtraction" + +[b120ffd5-bad6-4e22-81c8-5512e8faf905] +description = "multiple subtraction" + +[4f4a5749-ef0c-4f60-841f-abcfaf05d2ae] +description = "subtraction then addition" + +[312d908c-f68f-42c9-aa75-961623cc033f] +description = "multiple multiplication" + +[38e33587-8940-4cc1-bc28-bfd7e3966276] +description = "addition and multiplication" + +[3c854f97-9311-46e8-b574-92b60d17d394] +description = "multiple division" + +[3ad3e433-8af7-41ec-aa9b-97b42ab49357] +description = "unknown operation" + +[8a7e85a8-9e7b-4d46-868f-6d759f4648f8] +description = "Non math question" + +[42d78b5f-dbd7-4cdb-8b30-00f794bb24cf] +description = "reject problem missing an operand" + +[c2c3cbfc-1a72-42f2-b597-246e617e66f5] +description = "reject problem with no operands or operators" + +[4b3df66d-6ed5-4c95-a0a1-d38891fbdab6] +description = "reject two operations in a row" + +[6abd7a50-75b4-4665-aa33-2030fd08bab1] +description = "reject two numbers in a row" + +[10a56c22-e0aa-405f-b1d2-c642d9c4c9de] +description = "reject postfix notation" + +[0035bc63-ac43-4bb5-ad6d-e8651b7d954e] +description = "reject prefix notation" diff --git a/exercises/practice/wordy/wordy.lua b/exercises/practice/wordy/wordy.lua new file mode 100644 index 00000000..17f224bd --- /dev/null +++ b/exercises/practice/wordy/wordy.lua @@ -0,0 +1,5 @@ +local function answer(question) + +end + +return { answer = answer } diff --git a/exercises/practice/wordy/wordy_spec.lua b/exercises/practice/wordy/wordy_spec.lua new file mode 100644 index 00000000..a910a28e --- /dev/null +++ b/exercises/practice/wordy/wordy_spec.lua @@ -0,0 +1,111 @@ +local wordy = require('wordy') + +describe('wordy', function() + it('just a number', function() + assert.are.same(5, wordy.answer('What is 5?')) + end) + + it('addition', function() + assert.are.same(2, wordy.answer('What is 1 plus 1?')) + end) + + it('more addition', function() + assert.are.same(55, wordy.answer('What is 53 plus 2?')) + end) + + it('addition with negative numbers', function() + assert.are.same(-11, wordy.answer('What is -1 plus -10?')) + end) + + it('large addition', function() + assert.are.same(45801, wordy.answer('What is 123 plus 45678?')) + end) + + it('subtraction', function() + assert.are.same(16, wordy.answer('What is 4 minus -12?')) + end) + + it('multiplication', function() + assert.are.same(-75, wordy.answer('What is -3 multiplied by 25?')) + end) + + it('division', function() + assert.are.same(-11, wordy.answer('What is 33 divided by -3?')) + end) + + it('multiple additions', function() + assert.are.same(3, wordy.answer('What is 1 plus 1 plus 1?')) + end) + + it('addition and subtraction', function() + assert.are.same(8, wordy.answer('What is 1 plus 5 minus -2?')) + end) + + it('multiple subtraction', function() + assert.are.same(3, wordy.answer('What is 20 minus 4 minus 13?')) + end) + + it('subtraction then addition', function() + assert.are.same(14, wordy.answer('What is 17 minus 6 plus 3?')) + end) + + it('multiple multiplication', function() + assert.are.same(-12, wordy.answer('What is 2 multiplied by -2 multiplied by 3?')) + end) + + it('addition and multiplication', function() + assert.are.same(-8, wordy.answer('What is -3 plus 7 multiplied by -2?')) + end) + + it('multiple division', function() + assert.are.same(2, wordy.answer('What is -12 divided by 2 divided by -3?')) + end) + + it('unknown operation', function() + assert.has_error(function() + wordy.answer('What is 52 cubed?') + end, 'Invalid question') + end) + + it('Non math question', function() + assert.has_error(function() + wordy.answer('Who is the President of the United States?') + end, 'Invalid question') + end) + + it('reject problem missing an operand', function() + assert.has_error(function() + wordy.answer('What is 1 plus?') + end, 'Invalid question') + end) + + it('reject problem with no operands or operators', function() + assert.has_error(function() + wordy.answer('What is?') + end, 'Invalid question') + end) + + it('reject two operations in a row', function() + assert.has_error(function() + wordy.answer('What is 1 plus plus 2?') + end, 'Invalid question') + end) + + it('reject two numbers in a row', function() + assert.has_error(function() + wordy.answer('What is 1 plus 2 1?') + end, 'Invalid question') + end) + + it('reject postfix notation', function() + assert.has_error(function() + wordy.answer('What is 1 2 plus?') + end, 'Invalid question') + end) + + it('reject prefix notation', function() + assert.has_error(function() + wordy.answer('What is plus 1 2?') + end, 'Invalid question') + end) +end)