Some of my advent of code solutions for 2018

DAY ONE

	function day1part1(data) {
	let sum = 0;
	for (let i = 0; i < data.length; i++) {
	sum += data[i];
	}
	return sum;
	}
	function day1part2(data) {
	const frequencies = [];
	let sum = 0;
	while (true) {
	for (let i = 0; i < data.length; i++) {
	const num = data[i];
	sum += num;
	if (frequencies.includes(sum)) {
	return sum;
	}
	frequencies.push(sum);
	}
	}
	}

DAY TWO

//Part 1
	var count = 0;
	var count2 = 0;
	function getFrequency(string) {
	var freq = {};
	for (var i = 0; i < string.length; i++) {
	var character = string.charAt(i);
	if (freq[character]) {
	freq[character]++;
	} else {
	freq[character] = 1;
	}
	}
	if (Object.keys(freq).some(i => freq[i] === 2)) count++
	if (Object.keys(freq).some(j => freq[j] === 3)) count2++
	}
	for (var i = 0; i < input.length; i++) {
	getFrequency(input[i]);
	}
	console.log(count)
	console.log(count2)
	console.log(count * count2)
	//Part 2
	var freq = {};
	for (let i = 0; i < input.length; i++) {
	for (let j = 0; j < input.length; j++) {
	var subChar = input[j].slice(i + 1);
	console.log(subChar)
	if (freq.includes(subChar)) {
	return subChar;
	}
	freq.push(subChar);
	}
	}

DAY THREE

//part 1
	var c = {};
	var o = [];
	for (var inp of input) {
	var string = inp.split(/(\d+) @ (\d+),(\d+)\: (\d+)x(\d+)/);
	var i = parseInt(string[1])
	var l = parseInt(string[2])
	var t = parseInt(string[3])
	var w = parseInt(string[4])
	var h = parseInt(string[5])
	for (var j = t; j < t + h; j++) {
	for (var k = l; k < l + w; k++) {
	var key = k + "," + j ;
	if (!c[key]) {
	c[key] = [];
	}
	c[key] = c[key].concat(i);
	if (c[key].length >= 2) {
	o.push(key)
	}
	}
	}
	}
	console.log(o)
	//part 2
	var c = {};
	var ov = [];
	var o = [];
	var id = [];
	for (var inp of input) {
	var string = inp.split(/(\d+) @ (\d+),(\d+)\: (\d+)x(\d+)/);
	var i = parseInt(string[1])
	var l = parseInt(string[2])
	var t = parseInt(string[3])
	var w = parseInt(string[4])
	var h = parseInt(string[5])
	id.push(i)
	for (var y = t; y < t + h; y++) {
	for (var x = l; x < l + w; x++) {
	var key = x + "," + y;
	if (!c[key]) {
	c[key] = [];
	}
	c[key] = c[key].concat(i);
	if (c[key].length >= 2) {
	for (var i of id) {
	ov.push(i);
	}
	}
	}
	}
	}
	for (const i of id) {
	if (!ov.includes(i)) {
	console.log(i);
	}
	}