27 lines
633 B
JavaScript
27 lines
633 B
JavaScript
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#!/usr/bin/env node
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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 minNumerical = '0'.charCodeAt(0);
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var maxNumerical = '9'.charCodeAt(0);
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function onlynumerical(str) {
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return str.split('').map(i=>i.charCodeAt(0)).filter(i=>(i>=minNumerical && i<=maxNumerical)).map(i=>i-48);
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}
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function firstandlast(arr) {
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return [arr[0],arr[arr.length-1]];
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}
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var nums = lines.map(i=>{
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var nums = firstandlast(onlynumerical(i));
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//console.log({nums});
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return nums[0]*10+nums[1];
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});
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//console.log({nums});
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var sum=0;
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for(var i of nums) {
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sum+=i;
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}
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console.log(sum);
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