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ldd/day1.js

Created December 4, 2017 14:25
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Advent of code - Day 1 (javascript)
Raw
day1.js
// day 1
const day1part1 = s => s
.split('')
.filter((el,i,A)=>(el===A[(i+1) % A.length] ))
.reduce((p,n)=>p+(+n),0)
const day1part2 = s => s
.split('')
.filter((el,i,A)=>(el===A[(i+A.length/2) % A.length]))
.reduce((p,n)=>p+(+n),0)
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