AoC 2020: day4

Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>

2019/day_05/day_05.go

@@ -1,121 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"fmt"
-	"log"
-	"math"
-	"os"
-	"strconv"
-	"strings"
-)
-
-const (
-	opcodeAdd         = 1
-	opcodeMultiply    = 2
-	opcodeInput       = 3
-	opcodeOutput      = 4
-	opcodeJumpIfTrue  = 5
-	opcodeJumpIfFalse = 6
-	opcodeLessThan    = 7
-	opcodeEquals      = 8
-	opcodeHalt        = 99
-
-	paramModePosition  = 0
-	paramModeImmediate = 1
-)
-
-func readValues(fileName string) []int {
-	file, err := os.Open(fileName)
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer file.Close()
-
-	var values []int
-
-	scanner := bufio.NewScanner(file)
-	for scanner.Scan() {
-		lineElements := strings.Split(scanner.Text(), ",")
-		for _, elem := range lineElements {
-			n, err := strconv.Atoi(elem)
-			if err != nil {
-				log.Fatalf("Cannot convert to int: %s\n", elem)
-			}
-			values = append(values, n)
-		}
-	}
-	return values
-}
-
-func runIntcode(values []int) {
-	instructionPointer := 0
-	for values[instructionPointer] != opcodeHalt {
-		instruction := values[instructionPointer]
-		opCode := instruction % 100
-
-		paramAddress := func(n int) int {
-			mode := (instruction % int(math.Pow10(n+2))) / int(math.Pow10(n+1))
-			switch mode {
-			case paramModeImmediate:
-				return instructionPointer + n
-			default:
-				return values[instructionPointer+n]
-			}
-		}
-
-		switch opCode {
-		case opcodeInput:
-			var input int
-			fmt.Print("Input: ")
-			_, err := fmt.Scanf("%d", &input)
-			if err != nil {
-				log.Fatalf("Cannot read integer from stdin: %s", err)
-			}
-			values[paramAddress(1)] = input
-			instructionPointer += 2
-		case opcodeOutput:
-			fmt.Printf("Output: %d\n", values[paramAddress(1)])
-			instructionPointer += 2
-		case opcodeAdd:
-			values[paramAddress(3)] = values[paramAddress(1)] + values[paramAddress(2)]
-			instructionPointer += 4
-		case opcodeMultiply:
-			values[paramAddress(3)] = values[paramAddress(1)] * values[paramAddress(2)]
-			instructionPointer += 4
-		case opcodeJumpIfTrue:
-			if values[paramAddress(1)] != 0 {
-				instructionPointer = values[paramAddress(2)]
-			} else {
-				instructionPointer += 3
-			}
-		case opcodeJumpIfFalse:
-			if values[paramAddress(1)] == 0 {
-				instructionPointer = values[paramAddress(2)]
-			} else {
-				instructionPointer += 3
-			}
-		case opcodeLessThan:
-			if values[paramAddress(1)] < values[paramAddress(2)] {
-				values[paramAddress(3)] = 1
-			} else {
-				values[paramAddress(3)] = 0
-			}
-			instructionPointer += 4
-		case opcodeEquals:
-			if values[paramAddress(1)] == values[paramAddress(2)] {
-				values[paramAddress(3)] = 1
-			} else {
-				values[paramAddress(3)] = 0
-			}
-			instructionPointer += 4
-		default:
-			log.Fatalf("Unknown opCode: %d\n", opCode)
-		}
-	}
-}
-
-func main() {
-	values := readValues("./input")
-	runIntcode(values)
-}

2019/day_05/input

@@ -1 +0,0 @@
-3,225,1,225,6,6,1100,1,238,225,104,0,1102,89,49,225,1102,35,88,224,101,-3080,224,224,4,224,102,8,223,223,1001,224,3,224,1,223,224,223,1101,25,33,224,1001,224,-58,224,4,224,102,8,223,223,101,5,224,224,1,223,224,223,1102,78,23,225,1,165,169,224,101,-80,224,224,4,224,102,8,223,223,101,7,224,224,1,224,223,223,101,55,173,224,1001,224,-65,224,4,224,1002,223,8,223,1001,224,1,224,1,223,224,223,2,161,14,224,101,-3528,224,224,4,224,1002,223,8,223,1001,224,7,224,1,224,223,223,1002,61,54,224,1001,224,-4212,224,4,224,102,8,223,223,1001,224,1,224,1,223,224,223,1101,14,71,225,1101,85,17,225,1102,72,50,225,1102,9,69,225,1102,71,53,225,1101,10,27,225,1001,158,34,224,101,-51,224,224,4,224,102,8,223,223,101,6,224,224,1,223,224,223,102,9,154,224,101,-639,224,224,4,224,102,8,223,223,101,2,224,224,1,224,223,223,4,223,99,0,0,0,677,0,0,0,0,0,0,0,0,0,0,0,1105,0,99999,1105,227,247,1105,1,99999,1005,227,99999,1005,0,256,1105,1,99999,1106,227,99999,1106,0,265,1105,1,99999,1006,0,99999,1006,227,274,1105,1,99999,1105,1,280,1105,1,99999,1,225,225,225,1101,294,0,0,105,1,0,1105,1,99999,1106,0,300,1105,1,99999,1,225,225,225,1101,314,0,0,106,0,0,1105,1,99999,108,226,226,224,102,2,223,223,1006,224,329,101,1,223,223,1007,677,677,224,1002,223,2,223,1005,224,344,1001,223,1,223,8,226,677,224,1002,223,2,223,1006,224,359,1001,223,1,223,108,226,677,224,1002,223,2,223,1005,224,374,1001,223,1,223,107,226,677,224,102,2,223,223,1006,224,389,101,1,223,223,1107,226,226,224,1002,223,2,223,1005,224,404,1001,223,1,223,1107,677,226,224,102,2,223,223,1005,224,419,101,1,223,223,1007,226,226,224,102,2,223,223,1006,224,434,1001,223,1,223,1108,677,226,224,1002,223,2,223,1005,224,449,101,1,223,223,1008,226,226,224,102,2,223,223,1005,224,464,101,1,223,223,7,226,677,224,102,2,223,223,1006,224,479,101,1,223,223,1008,226,677,224,1002,223,2,223,1006,224,494,101,1,223,223,1107,226,677,224,1002,223,2,223,1005,224,509,1001,223,1,223,1108,226,226,224,1002,223,2,223,1006,224,524,101,1,223,223,7,226,226,224,102,2,223,223,1006,224,539,1001,223,1,223,107,226,226,224,102,2,223,223,1006,224,554,101,1,223,223,107,677,677,224,102,2,223,223,1006,224,569,101,1,223,223,1008,677,677,224,1002,223,2,223,1006,224,584,1001,223,1,223,8,677,226,224,1002,223,2,223,1005,224,599,101,1,223,223,1108,226,677,224,1002,223,2,223,1005,224,614,101,1,223,223,108,677,677,224,102,2,223,223,1005,224,629,1001,223,1,223,8,677,677,224,1002,223,2,223,1005,224,644,1001,223,1,223,7,677,226,224,102,2,223,223,1006,224,659,1001,223,1,223,1007,226,677,224,102,2,223,223,1005,224,674,101,1,223,223,4,223,99,226