61 lines
1.0 KiB
JavaScript
61 lines
1.0 KiB
JavaScript
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#!/usr/bin/env node
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var number_words=`
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0
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1
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5
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6
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7
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8
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9
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zero
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one
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two
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three
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four
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five
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six
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seven
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eight
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nine`;
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number_words = number_words.split('\n').filter(i=>i);
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function allneedles(stack,needle) {
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var out=[];
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var sent=-1;
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while((sent=stack.indexOf(needle,sent+1))!=-1) {
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//console.log({stack,needle,sent});
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out.push(sent);
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}
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return out;
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}
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function translatelineintopositions(line) {
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var out = [];
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number_words.forEach((needle,index)=>{
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var valueof = index%10;
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var allof = allneedles(line,needle);
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//console.log({line,needle,valueof,allof});
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out=out.concat(allof.map(pos=>({pos,valueof})));
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});
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out.sort((a,b)=>a.pos-b.pos);
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return out;
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}
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function linetonumber(line) {
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var numbers = translatelineintopositions(line);
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var out =numbers[0].valueof*10+numbers[numbers.length-1].valueof;
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console.log({out});
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return out;
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}
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var inputstring = require('fs').readFileSync('input.txt','utf8');
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var lines = inputstring.split('\n').filter(i=>i);
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var sum=0;
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for(var line of lines) {
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sum+=linetonumber(line);
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}
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console.log('Result:',sum);
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