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

2.2 KiB

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id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
596e457071c35c882915b3e4	Compare a list of strings	5	302235	compare-a-list-of-strings

--description--

Given a list of arbitrarily many strings, implement a function for each of the following conditions:

test if they are all lexically equal
test if every string is lexically less than the one after it (i.e. whether the list is in strict ascending order)

--hints--

allEqual should be a function.

assert(typeof allEqual === 'function');

azSorted should be a function.

assert(typeof azSorted === 'function');

allEqual(["AA", "AA", "AA", "AA"]) should return true.

assert(allEqual(testCases[0]));

azSorted(["AA", "AA", "AA", "AA"]) should return false.

assert(!azSorted(testCases[0]));

allEqual(["AA", "ACB", "BB", "CC"]) should return false.

assert(!allEqual(testCases[1]));

azSorted(["AA", "ACB", "BB", "CC"]) should return true.

assert(azSorted(testCases[1]));

allEqual([]) should return true.

assert(allEqual(testCases[2]));

azSorted([]) should return true.

assert(azSorted(testCases[2]));

allEqual(["AA"]) should return true.

assert(allEqual(testCases[3]));

azSorted(["AA"]) should return true.

assert(azSorted(testCases[3]));

allEqual(["BB", "AA"]) should return false.

assert(!allEqual(testCases[4]));

azSorted(["BB", "AA"]) should return false.

assert(!azSorted(testCases[4]));

--seed--

--after-user-code--

const testCases = [['AA', 'AA', 'AA', 'AA'], ['AA', 'ACB', 'BB', 'CC'], [], ['AA'], ['BB', 'AA']];

--seed-contents--

function allEqual(arr) {

  return true;
}

function azSorted(arr) {

  return true;
}

--solutions--

function allEqual(a) {
  let out = true;
  let i = 0;
  while (++i < a.length) {
    out = out && (a[i - 1] === a[i]);
  } return out;
}

function azSorted(a) {
  let out = true;
  let i = 0;
  while (++i < a.length) {
    out = out && (a[i - 1] < a[i]);
  } return out;
}

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