Oliver Eyton-Williams ee1e8abd87

feat(curriculum): restore seed + solution to Chinese (#40683 )

* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>

2021-01-12 19:31:00 -07:00

8.5 KiB

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id, title, challengeType, dashedName

id	title	challengeType	dashedName
5d79253a2febbb77098730b9	Part 136	0	part-136

--description--

The every method checks if all elements of an array satisfy the provided testing function.

Use it to add an everyeven function to spreadsheetFunctions which checks if all values passed in are evenspreadsheetFunctions which checks if all values passed in are even.

--hints--

See description above for instructions.

assert(
  spreadsheetFunctions.everyeven([2, 6, 4, 0, 20]) &&
    !spreadsheetFunctions.everyeven([10, 0, 9, 2]) &&
    code.includes('.every')
);

--seed--

--before-user-code--

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Spreadsheet</title>
  <style>
    #container {
      display: grid;
      grid-template-columns: 50px repeat(10, 200px);
      grid-template-rows: repeat(11, 30px);
    }
    .label {
      background-color: lightgray;
      text-align: center;
      vertical-align: middle;
      line-height: 30px;
    }
  </style>
</head>
<body>
<div id="container">
  <div></div>
</div>

--after-user-code--

</body>
</html>

--seed-contents--

<script>

const infixToFunction = {
  "+": (x, y) => x + y,
  "-": (x, y) => x - y,
  "*": (x, y) => x * y,
  "/": (x, y) => x / y
};

const infixEval = (str, regex) =>
  str.replace(regex, (_, arg1, fn, arg2) =>
    infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
  );

const highPrecedence = str => {
  const regex = /([0-9.]+)([*\/])([0-9.]+)/;
  const str2 = infixEval(str, regex);
  return str === str2 ? str : highPrecedence(str2);
};

const isEven = num => num % 2 === 0;
const sum = nums => nums.reduce((a, x) => a + x);
const average = nums => sum(nums) / nums.length;

const median = nums => {
  const sorted = nums.slice().sort((x, y) => x - y);
  const length = sorted.length;
  const middle = sorted.length / 2 - 1;
  return isEven(length)
    ? average([sorted[middle], sorted[middle + 1]])
    : sorted[middle + 0.5];
}; 

const spreadsheetFunctions = {
  "": x => x,
  random: ([x, y]) => Math.floor(Math.random() * y + x),
  increment: nums => nums.map(x => x + 1),
  firsttwo: arr => arr.slice(0, 2),
  lasttwo: arr => arr.slice(-2),
  even: nums => nums.filter(isEven),
  sum,
  average,
  median,
  has2: arr => arr.includes(2),
  nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), []),
  range: arr => range(...arr),
  someeven: arr => arr.some(isEven)
};



const applyFn = str => {
  const noHigh = highPrecedence(str);
  const infix = /([0-9.]+)([+-])([0-9.]+)/;
  const str2 = infixEval(noHigh, infix);
  const regex = /([a-z]*)\(([0-9., ]*)\)(?!.*\()/i;
  const toNumberList = args => args.split(",").map(parseFloat);
  const applyFunction = (fn, args) =>
    spreadsheetFunctions[fn.toLowerCase()](toNumberList(args));
  return str2.replace(
    regex,
    (match, fn, args) =>
      spreadsheetFunctions.hasOwnProperty(fn.toLowerCase()) ? applyFunction(fn, args) : match
  );
};

const range = (start, end) =>
  start > end ? [] : [start].concat(range(start + 1, end));

const charRange = (start, end) =>
  range(start.charCodeAt(0), end.charCodeAt(0)).map(x =>
    String.fromCharCode(x)
  );

const evalFormula = (x, cells) => {
  const idToText = id => cells.find(cell => cell.id === id).value;
  const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
  const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
  const elemValue = n => c => idToText(c + n);
  const addChars = c1 => c2 => n => charRange(c1, c2).map(elemValue(n));
  const varRangeExpanded = x.replace(rangeRegex, (_, c1, n1, c2, n2) =>
    rangeFromString(n1, n2).map(addChars(c1)(c2))
  );
  const varRegex = /[A-J][1-9][0-9]?/gi;
  const varExpanded = varRangeExpanded.replace(
    varRegex,
    match => idToText(match.toUpperCase())
  );
  const functionExpanded = applyFn(varExpanded);
  return functionExpanded === x
    ? functionExpanded
    : evalFormula(functionExpanded, cells);
};

window.onload = () => {
  const container = document.getElementById("container");
  const createLabel = name => {
    const label = document.createElement("div");
    label.className = "label";
    label.textContent = name;
    container.appendChild(label);
  };
  const letters = charRange("A", "J");
  letters.forEach(createLabel);
  range(1, 99).forEach(x => {
    createLabel(x);
    letters.forEach(y => {
      const input = document.createElement("input");
      input.type = "text";
      input.id = y + x;
      input.onchange = update;
      container.appendChild(input);
    });
  });
};

const update = event => {
  const element = event.target;
  const value = element.value.replace(/\s/g, "");
  if (!value.includes(element.id) && value[0] === "=") {
    element.value = evalFormula(
      value.slice(1),
      Array.from(document.getElementById("container").children)
    );
  }
};
</script>

--solutions--

<script>
const infixToFunction = {
  "+": (x, y) => x + y,
  "-": (x, y) => x - y,
  "*": (x, y) => x * y,
  "/": (x, y) => x / y
};

const infixEval = (str, regex) =>
  str.replace(regex, (_, arg1, fn, arg2) =>
    infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
  );

const highPrecedence = str => {
  const regex = /([0-9.]+)([*\/])([0-9.]+)/;
  const str2 = infixEval(str, regex);
  return str === str2 ? str : highPrecedence(str2);
};

const isEven = num => num % 2 === 0;
const sum = nums => nums.reduce((a, x) => a + x);
const average = nums => sum(nums) / nums.length;

const median = nums => {
  const sorted = nums.slice().sort((x, y) => x - y);
  const length = sorted.length;
  const middle = sorted.length / 2 - 1;
  return isEven(length)
    ? average([sorted[middle], sorted[middle + 1]])
    : sorted[middle + 0.5];
}; 

const spreadsheetFunctions = {
  "": x => x,
  random: ([x, y]) => Math.floor(Math.random() * y + x),
  increment: nums => nums.map(x => x + 1),
  firsttwo: arr => arr.slice(0, 2),
  lasttwo: arr => arr.slice(-2),
  even: nums => nums.filter(isEven),
  sum,
  average,
  median,
  has2: arr => arr.includes(2),
  nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), []),
  range: arr => range(...arr),
  someeven: arr => arr.some(isEven),
  everyeven: arr => arr.every(isEven)
};

const applyFn = str => {
  const noHigh = highPrecedence(str);
  const infix = /([0-9.]+)([+-])([0-9.]+)/;
  const str2 = infixEval(noHigh, infix);
  const regex = /([a-z]*)\(([0-9., ]*)\)(?!.*\()/i;
  const toNumberList = args => args.split(",").map(parseFloat);
  const applyFunction = (fn, args) =>
    spreadsheetFunctions[fn.toLowerCase()](toNumberList(args));
  return str2.replace(
    regex,
    (match, fn, args) =>
      spreadsheetFunctions.hasOwnProperty(fn.toLowerCase()) ? applyFunction(fn, args) : match
  );
};

const range = (start, end) =>
  start > end ? [] : [start].concat(range(start + 1, end));



const charRange = (start, end) =>
  range(start.charCodeAt(0), end.charCodeAt(0)).map(x =>
    String.fromCharCode(x)
  );

const evalFormula = (x, cells) => {
  const idToText = id => cells.find(cell => cell.id === id).value;
  const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
  const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
  const elemValue = n => c => idToText(c + n);
  const addChars = c1 => c2 => n => charRange(c1, c2).map(elemValue(n));
  const varRangeExpanded = x.replace(rangeRegex, (_, c1, n1, c2, n2) =>
    rangeFromString(n1, n2).map(addChars(c1)(c2))
  );
  const varRegex = /[A-J][1-9][0-9]?/gi;
  const varExpanded = varRangeExpanded.replace(
    varRegex,
    match => idToText(match.toUpperCase())
  );
  const functionExpanded = applyFn(varExpanded);
  return functionExpanded === x
    ? functionExpanded
    : evalFormula(functionExpanded, cells);
};

window.onload = () => {
  const container = document.getElementById("container");
  const createLabel = name => {
    const label = document.createElement("div");
    label.className = "label";
    label.textContent = name;
    container.appendChild(label);
  };
  const letters = charRange("A", "J");
  letters.forEach(createLabel);
  range(1, 99).forEach(x => {
    createLabel(x);
    letters.forEach(y => {
      const input = document.createElement("input");
      input.type = "text";
      input.id = y + x;
      input.onchange = update;
      container.appendChild(input);
    });
  });
};

const update = event => {
  const element = event.target;
  const value = element.value.replace(/\s/g, "");
  if (!value.includes(element.id) && value[0] === "=") {
    element.value = evalFormula(
      value.slice(1),
      Array.from(document.getElementById("container").children)
    );
  }
};
</script>

8.5 KiB Raw Blame History