Recover a secret string from random triplets 답안

문제)

www.codewars.com/kata/53f40dff5f9d31b813000774/train/javascript

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내가 푼 답)

var recoverSecret = function(triplets) {
  let dedupTriplet = [];
  triplets.forEach(triplet => dedupTriplet = [...triplet, ...dedupTriplet]);
  dedupTriplet = Array.from(new Set(dedupTriplet));
  
  checkPosition(triplets, dedupTriplet);
  return dedupTriplet.join('');
}

function checkPosition(triplets, dedupTriplet) {
  let flag = false;
  let i = 1;
  for (let tri of triplets) {
    if (changePosition(dedupTriplet, tri[1], tri[2]) || changePosition(dedupTriplet, tri[0], tri[1])) {
      flag = true;
    }
    
    if (flag && (i >= triplets.length)) {
      checkPosition(triplets, dedupTriplet);  
    }
    
    i += 1;
  }
}

function changePosition(arr, a, b) {
  let aIndex = arr.indexOf(a);
  let bIndex = arr.indexOf(b);
  if (aIndex > bIndex) {
    arr.splice(aIndex, 1, b);
    arr.splice(bIndex, 1, a);
    return true;
  }
}

소스를 좀 다듬긴 해야하겠는데,.

 

 

테스트 결과)

 

마음에 드는 다른 사람 소스)

넘사다..