day 3 part 2 init
This commit is contained in:
parent
36310a03f6
commit
e8c9aa3f76
1 changed files with 31 additions and 5 deletions
|
@ -7,21 +7,47 @@ import { readInput } from "../utils.ts";
|
||||||
class DayThree implements Solvable {
|
class DayThree implements Solvable {
|
||||||
input = readInput('03')
|
input = readInput('03')
|
||||||
|
|
||||||
|
private multiplyInstruction(inst: string) {
|
||||||
|
return inst
|
||||||
|
.slice(4, -1)
|
||||||
|
.split(',')
|
||||||
|
.map(arr => Number.parseInt(arr))
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
public part1(): Solvable {
|
public part1(): Solvable {
|
||||||
const re = /mul\([0-9]+,[0-9]+\)/g
|
const re = /mul\([0-9]+,[0-9]+\)/g
|
||||||
// get all matches and parse them to int[]
|
// get all matches and parse them to int[]
|
||||||
const result = this.input.matchAll(new RegExp(re))
|
const result = this.input.matchAll(new RegExp(re))
|
||||||
.map(match => match[0]
|
.map(match => this.multiplyInstruction(match[0]))
|
||||||
.slice(4, -1)
|
|
||||||
.split(',')
|
|
||||||
.map(arr => Number.parseInt(arr)))
|
|
||||||
.map(([left, right]) => left * right)
|
.map(([left, right]) => left * right)
|
||||||
.reduce((prev, curr) => prev + curr)
|
.reduce((prev, curr) => prev + curr)
|
||||||
console.log(result)
|
console.log(result)
|
||||||
return this
|
return this
|
||||||
}
|
}
|
||||||
|
|
||||||
public part2(): Solvable {
|
public part2(): Solvable {
|
||||||
return this
|
const re = /(mul\([0-9]+,[0-9]+\)|do\(\)|don\'t\(\))/g
|
||||||
|
// get all matches and parse them to int[]
|
||||||
|
const instructions = this.input.matchAll(new RegExp(re)).map(match => match[0])
|
||||||
|
let active = true
|
||||||
|
let result = 0
|
||||||
|
for (const inst of instructions) {
|
||||||
|
if (inst === 'do()') {
|
||||||
|
active = true;
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
if (inst === 'don\'t()') {
|
||||||
|
active = false;
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
if (active) {
|
||||||
|
const [left, right] = this.multiplyInstruction(inst)
|
||||||
|
result += left * right
|
||||||
|
}
|
||||||
|
}
|
||||||
|
console.log(result)
|
||||||
|
return this
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue