[Day 25](https://adventofcode.com/2018/day/25)[Day 18](https://adventofcode.com/2018/day/18)[Day 21](https://adventofcode.com/2018/day/21)Day 19[Day 16](https://adventofcode.com/2018/day/16)[Day 14](https://adventofcode.com/2018/day/14)[Day 13](https://adventofcode.com/2018/day/13)[Day 12](https://adventofcode.com/2018/day/12)[Day 11](https://adventofcode.com/2018/day/11)[Day 10](https://adventofcode.com/2018/day/10)[Day 9](https://adventofcode.com/2018/day/9)[Day 8](https://adventofcode.com/2018/day/8)[Day 7](https://adventofcode.com/2018/day/7)[Day 6](https://adventofcode.com/2018/day/6)[Day 4](https://adventofcode.com/2018/day/4)[Day 3](https://adventofcode.com/2018/day/3)Advent of Code: [Day 2](https://adventofcode.com/2018/day/2)[Day 1](https://adventofcode.com/2018/day/1)
[Day 5](https://adventofcode.com/2018/day/5)
function part1 (s) {
let stack = [];
for (const char of s) {
if (stack.length && char === toggleCase[stack.slice(-1)]) {
stack.pop();
} else {
stack.push(char);
}
}
return stack;
}
reducedPolymer = part1(input)
reducedPolymer.length
function part2 (s) {
let lengths = [];
for (const char of alphabet) {
const sWithoutChar = s.filter(c => c.toLowerCase() !== char);
lengths.push(part1(sWithoutChar).length);
}
return Math.min(...lengths);
}
part2(reducedPolymer)
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