solution for day 11
Eric Wagoner
parent
d5574c1167
commit
bf600501fa
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@ -0,0 +1,163 @@
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const sampleMonkeys = [
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[
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[79, 98],
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['*', 19],
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[23, 2, 3],
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0
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],
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[
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[54, 65, 75, 74],
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['+', 6],
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[19, 2, 0],
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0
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],
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[
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[79, 60, 97],
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['*', 'self'],
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[13, 1, 3],
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0
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],
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[
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[74],
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['+', 3],
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[17, 0, 1],
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0
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],
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]
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const inputMonkeys = [
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[
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[91, 58, 52, 69, 95, 54],
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['*', 13],
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[7, 1, 5],
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0
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],
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[
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[80, 80, 97, 84],
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['*', 'self'],
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[3, 3, 5],
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0
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],
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[
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[86, 92, 71],
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['+', 7],
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[2, 0, 4],
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0
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],
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[
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[96, 90, 99, 76, 79, 85, 98, 61],
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['+', 4],
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[11, 7, 6],
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0
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],
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[
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[60, 83, 68, 64, 73],
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['*', 19],
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[17, 1, 0],
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0
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],
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[
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[96, 52, 52, 94, 76, 51, 57],
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['+', 3],
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[5, 7, 3],
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0
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],
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[
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[75],
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['+', 5],
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[13, 4, 2],
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0
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],
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[
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[83, 75],
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['+', 1],
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[19, 2, 6],
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0
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]
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]
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// Part One
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//let monkeys = JSON.parse(JSON.stringify(sampleMonkeys));
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let monkeys = JSON.parse(JSON.stringify(inputMonkeys));
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for (let i = 0; i < 20; i++) {
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for (const m in monkeys) {
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const items = monkeys[m][0];
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const op = monkeys[m][1];
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const test = monkeys[m][2];
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for (const item of items) {
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monkeys[m][3]++;
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let newLevel;
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if (op[0] === '*') {
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if (op[1] === 'self') {
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newLevel = item * item;
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} else {
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newLevel = item * op[1];
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}
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} else {
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newLevel = item + op[1];
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}
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newLevel = Math.floor(newLevel / 3);
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if (newLevel % test[0] === 0) {
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monkeys[test[1]][0].push(newLevel);
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} else {
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monkeys[test[2]][0].push(newLevel);
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}
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}
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monkeys[m][0] = [];
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}
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}
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let counts = monkeys.map(m => m[3]);
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counts.sort(function(a, b) {
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return b - a;
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});
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console.log(counts[0] * counts[1]);
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// Part Two
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//monkeys = JSON.parse(JSON.stringify(sampleMonkeys));
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monkeys = JSON.parse(JSON.stringify(inputMonkeys));
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// Common denominator trick to keep numbers small outright stolen from
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// https://git.genehack.net/genehack/advent-of-code-2022/src/branch/main/11/day11_2.js
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let COMMON = 1;
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for (const monkey of monkeys) {
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COMMON *= monkey[2][0];
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}
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for (let i = 0; i < 10000; i++) {
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for (const m in monkeys) {
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const items = monkeys[m][0];
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const op = monkeys[m][1];
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const test = monkeys[m][2];
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for (const n in items) {
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monkeys[m][3] = monkeys[m][3] + 1;
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let newLevel;
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if (op[0] === '*') {
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if (op[1] === 'self') {
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newLevel = monkeys[m][0][n] ** 2;
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} else {
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newLevel = monkeys[m][0][n] * op[1];
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}
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} else {
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newLevel = monkeys[m][0][n] + op[1];
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}
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newLevel = newLevel % COMMON
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const pass = newLevel % (test[0]) == 0 ? true : false;
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monkeys[pass ? test[1] : test[2]][0].push(newLevel);
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}
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monkeys[m][0] = [];
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}
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}
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counts = monkeys.map(m => m[3]);
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counts.sort(function(a, b) {
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return b - a;
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});
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console.log(counts[0] * counts[1]);
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// functions
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@ -0,0 +1,106 @@
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const inputMonkeys = [
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[
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[91, 58, 52, 69, 95, 54],
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['*' 13],
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[7, 1, 5],
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0
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],
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[
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[80, 80, 97, 84],
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['*' 'self'],
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[3, 3, 5],
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0
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],
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[
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[86, 92, 71],
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['+' 7],
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[2, 0, 4],
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0
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],
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[
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[96, 90, 99, 76, 79, 85, 98, 61],
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['+' 4],
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[11, 7, 6],
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0
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],
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[
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[60, 83, 68, 64, 73],
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['*' 19],
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[17, 1, 0],
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0
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],
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[
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[96, 52, 52, 94, 76, 51, 57],
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['+' 3],
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[5, 7, 3],
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0
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],
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[
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[75],
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['+' 5],
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[13, 4, 2],
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0
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],
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[
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[83, 75],
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['+' 1],
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[19, 2, 6],
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0
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]
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]
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Monkey 0:
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Starting items: 91, 58, 52, 69, 95, 54
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Operation: new = old * 13
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Test: divisible by 7
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If true: throw to monkey 1
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If false: throw to monkey 5
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Monkey 1:
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Starting items: 80, 80, 97, 84
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Operation: new = old * old
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Test: divisible by 3
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If true: throw to monkey 3
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If false: throw to monkey 5
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Monkey 2:
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Starting items: 86, 92, 71
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Operation: new = old + 7
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Test: divisible by 2
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If true: throw to monkey 0
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If false: throw to monkey 4
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Monkey 3:
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Starting items: 96, 90, 99, 76, 79, 85, 98, 61
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Operation: new = old + 4
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Test: divisible by 11
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If true: throw to monkey 7
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If false: throw to monkey 6
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Monkey 4:
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Starting items: 60, 83, 68, 64, 73
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Operation: new = old * 19
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Test: divisible by 17
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If true: throw to monkey 1
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If false: throw to monkey 0
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Monkey 5:
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Starting items: 96, 52, 52, 94, 76, 51, 57
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Operation: new = old + 3
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Test: divisible by 5
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If true: throw to monkey 7
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If false: throw to monkey 3
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Monkey 6:
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Starting items: 75
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Operation: new = old + 5
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Test: divisible by 13
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If true: throw to monkey 4
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If false: throw to monkey 2
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Monkey 7:
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Starting items: 83, 75
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Operation: new = old + 1
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Test: divisible by 19
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If true: throw to monkey 2
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If false: throw to monkey 6
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@ -0,0 +1,54 @@
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Monkey 0:
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Starting items: 79, 98
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Operation: new = old * 19
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Test: divisible by 23
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If true: throw to monkey 2
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If false: throw to monkey 3
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Monkey 1:
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Starting items: 54, 65, 75, 74
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Operation: new = old + 6
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Test: divisible by 19
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If true: throw to monkey 2
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If false: throw to monkey 0
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Monkey 2:
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Starting items: 79, 60, 97
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Operation: new = old * old
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Test: divisible by 13
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If true: throw to monkey 1
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If false: throw to monkey 3
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Monkey 3:
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Starting items: 74
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Operation: new = old + 3
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Test: divisible by 17
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If true: throw to monkey 0
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If false: throw to monkey 1
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const sampleMonkeys = [
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[
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[79, 98],
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['*', 19],
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[23, 2, 3],
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0
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],
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[
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[54, 65, 75, 74],
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['+', 6],
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[19, 2, 0],
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0
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],
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[
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[79, 60, 97],
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['*', 'self'],
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[13, 1, 3],
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0
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],
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[
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[74],
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['+', 3],
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[17, 0, 1],
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0
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],
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]
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