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>

curriculum/challenges/chinese/10-coding-interview-prep/rosetta-code/top-rank-per-group.md

@@ -3,6 +3,7 @@ id: 595011cba5a81735713873bd
 title: 每组排名最高
 challengeType: 5
 videoUrl: ''
+dashedName: top-rank-per-group
 ---
 
 # --description--
@@ -84,5 +85,77 @@ assert.equal(res2[2].length, 1);
 assert.equal(res3[2][1].name, 'Maze Runner');
 ```
 
+# --seed--
+
+## --after-user-code--
+
+```js
+const testData1 = [
+  { name: 'Tyler Bennett', id: 'E10297', salary: 32000, dept: 'D101' },
+  { name: 'John Rappl', id: 'E21437', salary: 47000, dept: 'D050' },
+  { name: 'George Woltman', id: 'E00127', salary: 53500, dept: 'D101' },
+  { name: 'Adam Smith', id: 'E63535', salary: 18000, dept: 'D202' },
+  { name: 'Claire Buckman', id: 'E39876', salary: 27800, dept: 'D202' },
+  { name: 'David McClellan', id: 'E04242', salary: 41500, dept: 'D101' },
+  { name: 'Rich Holcomb', id: 'E01234', salary: 49500, dept: 'D202' },
+  { name: 'Nathan Adams', id: 'E41298', salary: 21900, dept: 'D050' },
+  { name: 'Richard Potter', id: 'E43128', salary: 15900, dept: 'D101' },
+  { name: 'David Motsinger', id: 'E27002', salary: 19250, dept: 'D202' },
+  { name: 'Tim Sampair', id: 'E03033', salary: 27000, dept: 'D101' },
+  { name: 'Kim Arlich', id: 'E10001', salary: 57000, dept: 'D190' },
+  { name: 'Timothy Grove', id: 'E16398', salary: 29900, dept: 'D190' }
+];
+
+const res1 = topRankPerGroup(10, testData1, 'dept', 'salary');
+
+const testData2 = [
+  { name: 'Friday 13th', genre: 'horror', rating: 9.9 },
+  { name: "Nightmare on Elm's Street", genre: 'horror', rating: 5.7 },
+  { name: 'Titanic', genre: 'drama', rating: 7.3 },
+  { name: 'Maze Runner', genre: 'scifi', rating: 7.1 },
+  { name: 'Blade runner', genre: 'scifi', rating: 8.9 }
+];
+
+const res2 = topRankPerGroup(1, testData2, 'genre', 'rating');
+const res3 = topRankPerGroup(2, testData2, 'genre', 'rating');
+```
+
+## --seed-contents--
+
+```js
+function topRankPerGroup(n, data, groupName, rankName) {
+
+  return true;
+}
+```
+
 # --solutions--
 
+```js
+const collectDept = function (arrOfObj, groupName) {
+  const collect = arrOfObj.reduce((rtnObj, obj) => {
+    if (rtnObj[obj[groupName]] === undefined) {
+      rtnObj[obj[groupName]] = [];
+    }
+    rtnObj[obj[groupName]].push(obj);
+    return rtnObj;
+  }, {} // initial value to reduce
+  );
+
+  return Object.keys(collect).sort().map(key => collect[key]);
+};
+
+const sortRank = function (arrOfRankArrs, rankName) {
+  return arrOfRankArrs.map(item => item.sort((a, b) => {
+    if (a[rankName] > b[rankName]) { return -1; }
+    if (a[rankName] < b[rankName]) { return 1; }
+    return 0;
+  }));
+};
+
+function topRankPerGroup(n, data, groupName, rankName) {
+  if (n < 0) { return; }
+  return sortRank(collectDept(data, groupName),
+    rankName).map(list => list.slice(0, n));
+}
+```