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

11 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
5900f3cc1000cf542c50fedf Problem 96: Su Doku 5 302213 problem-96-su-doku

--description--

Su Doku (Japanese meaning number place) is the name given to a popular puzzle concept. Its origin is unclear, but credit must be attributed to Leonhard Euler who invented a similar, and much more difficult, puzzle idea called Latin Squares. The objective of Su Doku puzzles, however, is to replace the blanks (or zeros) in a 9 by 9 grid in such that each row, column, and 3 by 3 box contains each of the digits 1 to 9. Below is an example of a typical starting puzzle grid and its solution grid.

0 0 3
9 0 0
0 0 1
0 2 0
3 0 5
8 0 6
6 0 0
0 0 1
4 0 0
0 0 8
7 0 0
0 0 6
1 0 2
0 0 0
7 0 8
9 0 0
0 0 8
2 0 0
0 0 2
8 0 0
0 0 5
6 0 9
2 0 3
0 1 0
5 0 0
0 0 9
3 0 0

4 8 3
9 6 7
2 5 1
9 2 1
3 4 5
8 7 6
6 5 7
8 2 1
4 9 3
5 4 8
7 2 9
1 3 6
1 3 2
5 6 4
7 9 8
9 7 6
1 3 8
2 4 5
3 7 2
8 1 4
6 9 5
6 8 9
2 5 3
4 1 7
5 1 4
7 6 9
3 8 2

A well constructed Su Doku puzzle has a unique solution and can be solved by logic, although it may be necessary to employ "guess and test" methods in order to eliminate options (there is much contested opinion over this). The complexity of the search determines the difficulty of the puzzle; the example above is considered easy because it can be solved by straight forward direct deduction.

The puzzlesArr array contains fifty different Su Doku puzzle strings ranging in difficulty, but all with unique solutions (the first puzzle in the array is the example in the challenge description).

By solving all fifty puzzles find the sum of the 3-digit numbers found in the top left corner of each solution grid; for example, 483 is the 3-digit number found in the top left corner of the solution grid above.

--hints--

suDoku(testPuzzles) should return a number.

assert(typeof suDoku(testPuzzles) === 'number');

suDoku(testPuzzles) should return 1190.

assert.strictEqual(suDoku(testPuzzles), 1190);

suDoku(puzzlesArr) should return 24702.

assert.strictEqual(suDoku(puzzlesArr), 24702);

--seed--

--seed-contents--

function suDoku(arr) {

  return true;
}

// Only change code above this line

const testPuzzles = [
  '003020600900305001001806400008102900700000008006708200002609500800203009005010300',
  '200080300060070084030500209000105408000000000402706000301007040720040060004010003',
  '000000907000420180000705026100904000050000040000507009920108000034059000507000000'
];

const puzzlesArr = [
  '003020600900305001001806400008102900700000008006708200002609500800203009005010300',
  '200080300060070084030500209000105408000000000402706000301007040720040060004010003',
  '000000907000420180000705026100904000050000040000507009920108000034059000507000000',
  '030050040008010500460000012070502080000603000040109030250000098001020600080060020',
  '020810740700003100090002805009040087400208003160030200302700060005600008076051090',
  '100920000524010000000000070050008102000000000402700090060000000000030945000071006',
  '043080250600000000000001094900004070000608000010200003820500000000000005034090710',
  '480006902002008001900370060840010200003704100001060049020085007700900600609200018',
  '000900002050123400030000160908000000070000090000000205091000050007439020400007000',
  '001900003900700160030005007050000009004302600200000070600100030042007006500006800',
  '000125400008400000420800000030000095060902010510000060000003049000007200001298000',
  '062340750100005600570000040000094800400000006005830000030000091006400007059083260',
  '300000000005009000200504000020000700160000058704310600000890100000067080000005437',
  '630000000000500008005674000000020000003401020000000345000007004080300902947100080',
  '000020040008035000000070602031046970200000000000501203049000730000000010800004000',
  '361025900080960010400000057008000471000603000259000800740000005020018060005470329',
  '050807020600010090702540006070020301504000908103080070900076205060090003080103040',
  '080005000000003457000070809060400903007010500408007020901020000842300000000100080',
  '003502900000040000106000305900251008070408030800763001308000104000020000005104800',
  '000000000009805100051907420290401065000000000140508093026709580005103600000000000',
  '020030090000907000900208005004806500607000208003102900800605007000309000030020050',
  '005000006070009020000500107804150000000803000000092805907006000030400010200000600',
  '040000050001943600009000300600050002103000506800020007005000200002436700030000040',
  '004000000000030002390700080400009001209801307600200008010008053900040000000000800',
  '360020089000361000000000000803000602400603007607000108000000000000418000970030014',
  '500400060009000800640020000000001008208000501700500000000090084003000600060003002',
  '007256400400000005010030060000508000008060200000107000030070090200000004006312700',
  '000000000079050180800000007007306800450708096003502700700000005016030420000000000',
  '030000080009000500007509200700105008020090030900402001004207100002000800070000090',
  '200170603050000100000006079000040700000801000009050000310400000005000060906037002',
  '000000080800701040040020030374000900000030000005000321010060050050802006080000000',
  '000000085000210009960080100500800016000000000890006007009070052300054000480000000',
  '608070502050608070002000300500090006040302050800050003005000200010704090409060701',
  '050010040107000602000905000208030501040070020901080406000401000304000709020060010',
  '053000790009753400100000002090080010000907000080030070500000003007641200061000940',
  '006080300049070250000405000600317004007000800100826009000702000075040190003090600',
  '005080700700204005320000084060105040008000500070803010450000091600508007003010600',
  '000900800128006400070800060800430007500000009600079008090004010003600284001007000',
  '000080000270000054095000810009806400020403060006905100017000620460000038000090000',
  '000602000400050001085010620038206710000000000019407350026040530900020007000809000',
  '000900002050123400030000160908000000070000090000000205091000050007439020400007000',
  '380000000000400785009020300060090000800302009000040070001070500495006000000000092',
  '000158000002060800030000040027030510000000000046080790050000080004070100000325000',
  '010500200900001000002008030500030007008000500600080004040100700000700006003004050',
  '080000040000469000400000007005904600070608030008502100900000005000781000060000010',
  '904200007010000000000706500000800090020904060040002000001607000000000030300005702',
  '000700800006000031040002000024070000010030080000060290000800070860000500002006000',
  '001007090590080001030000080000005800050060020004100000080000030100020079020700400',
  '000003017015009008060000000100007000009000200000500004000000020500600340340200000',
  '300200000000107000706030500070009080900020004010800050009040301000702000000008006'
];

suDoku(testPuzzles);

--solutions--

// solution required