mastermind

mastermind.js

function getMasterSequences(colors, sequenceLength) {
  return genSequences(colors, sequenceLength);
}

function genSequences(colors, totalLength, indices = []) {
  // console.log('genSequences');

  if (indices.length === totalLength) {
    const seq = genSeq(colors, indices);
    indices = [];
    return [seq];
  }

  let results = [];
  for (let i = 0; i < colors.length; i++) {
    genSequences(colors, totalLength, indices.concat([i])).forEach(item => results.push(item));
  }

  // results = results.reduce((prev, next) => prev.concat(next));
  return results;
}

function genSeq(colors, indices) {
  const result = indices.map(i => colors[i]);
  // console.log('genSeq', indices, result);
  return result;
}

let result = getMasterSequences(['P', 'O', 'G', 'B'], 1);
console.log('FINAL', result, result.length);
result = getMasterSequences(['P', 'O', 'G', 'B'], 2);
console.log('FINAL', result, result.length);
result = getMasterSequences(['P', 'O', 'G', 'B'], 3);
console.log('FINAL', result, result.length);
result = getMasterSequences(['P', 'O', 'G', 'B'], 4);
console.log('FINAL', result, result.length);