24 lines
727 B
JavaScript
24 lines
727 B
JavaScript
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var input = require("fs").readFileSync("input.txt").toString().replace(/\r/g, "");
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var ranges = input.split("\n").filter((a)=>(a)).map((line)=>(line.split("-").map((num)=>(parseInt(num))))).sort((a, b)=>(a[0] - b[0]));
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var newRanges = ranges.reduce((fixed, range)=>{
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if((fixed[fixed.length - 1][1] + 1) >= range[0]){
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if((fixed[fixed.length - 1][1] + 1) < range[1]){
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fixed[fixed.length - 1][1] = range[1];
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}
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}
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else{
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fixed.push(range);
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}
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return fixed;
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}, [[0, 0]]);
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var allowed = newRanges.reduce((numallowed, range, i, ranges)=>{
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if(i < (ranges.length - 1)){
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numallowed += ((ranges[i+1][0] - range[1]) - 1);
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}
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else{
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numallowed += (4294967295 - range[1]);
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}
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return numallowed;
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}, 0);
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console.log(allowed);
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