Day 1 Mark

day 1/day_1_mark.js

+a = input.split("\n").map(x => x.split("   ").map(Number))
+b = a.map(x => x[0]).sort()
+c = a.map(x => x[1]).sort()
+output2 = b.map((x,i) => Math.abs(x - c[i])).reduce((x,y)=>x+y)
+
+b = a.map(x => x[0])
+c = a.map(x => x[1])
+output2 = b.map(x => x*c.filter(y=>x==y).length).reduce((x,y)=>x+y)
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