Includes scripts I've written to help solve puzzles during puzzle competitions

puzzle-solve.js

// This was an around-the-world-in-80-days type problem where we were given places and had to filli n the blanks based on clues



var cities = ["Allahabad", "Battleship", "Brindisi", "Cadet", "Calcutta", "Charcoal", "Dove",
"Gunmetal", "Lampblack", "Omaha", "Paris", "Paynes", "Pewter",
"Slate", "Spanish", "Suez", "Whitewash", "Yokohama"].map(s => s.toLowerCase());

arriving = ["liverpool", "silver", "singapore", "gainsboro", "hongkong", "kholby", "chalk", 8, 9, 10, [9,10] [7,8], [4,8], 5, "san francisco", [5, 10], [6,10], "new york", "eigengrau"];

answers = 

function lookup_word(source, range, common_num) {
    var solns = [];
    for (var w of cities) {
        if (typeof range == 'number' && w.length == range) {
            intersect = _.intersection(w.split(''),source.split(''));
            if (common_num == null && intersect.length >= 3 || intersect.length == common_num) {
                solns.push(w);
                continue;
            }
        }
        intersect = _.intersection(w.split(''),source.split(''));
        if (intersect.length >= range[0] && intersect.length <= range[1] && (common_num == null && intersect.length >= 3 || intersect.length == common_num) ) {
            solns.push(w);
            continue;
        }
    }
    return solns;
}


// This was a word-processing problem where it was needed to find where a pair of letters in one word would overlap with a pair in another word

// Load the full build of lodash
var _ = require('lodash');

var ans = ["WILDTIME", "THEMOUSETRAP", "SATORI", "GEORGELEUTZ", "UNATTACHED", "ASTROLABE"];
output = {};
for (let i = 0; i < ans.length; i++) {
  let word = ans[i];
  let others = ans.filter(w => w !== word);
  output[word] = {}
  for (let j = 0; j < word.length-1; j++) {
    let segment = word.slice(j, j+2);
    let matches = others.filter(w => w.includes(segment));
    if (!_.isEmpty(matches)) { output[word][segment] = matches; } 
  }
}
console.log(output);
// Output
// {
//   "WILDTIME": {},
//   "THEMOUSETRAP": {
//     "HE": [
//       "UNATTACHED"
//     ],
//     "TR": [
//       "ASTROLABE"
//     ]
//   },
//   "SATORI": {
//     "AT": [
//       "UNATTACHED"
//     ],
//     "OR": [
//       "GEORGELEUTZ"
//     ]
//   },
//   "GEORGELEUTZ": {
//     "OR": [
//       "SATORI"
//     ]
//   },
//   "UNATTACHED": {
//     "AT": [
//       "SATORI"
//     ],
//     "HE": [
//       "THEMOUSETRAP"
//     ]
//   },
//   "ASTROLABE": {
//     "TR": [
//       "THEMOUSETRAP"
//     ]
//   }
// }