Finish task for part one for day 2

This commit is contained in:
Alphyron 2019-12-02 21:02:53 +01:00
parent 4f2c6c4956
commit 1680aec3ad
3 changed files with 150 additions and 0 deletions

1
day2/input.txt Normal file
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@ -0,0 +1 @@
1,0,0,3,1,1,2,3,1,3,4,3,1,5,0,3,2,1,13,19,1,9,19,23,2,13,23,27,2,27,13,31,2,31,10,35,1,6,35,39,1,5,39,43,1,10,43,47,1,5,47,51,1,13,51,55,2,55,9,59,1,6,59,63,1,13,63,67,1,6,67,71,1,71,10,75,2,13,75,79,1,5,79,83,2,83,6,87,1,6,87,91,1,91,13,95,1,95,13,99,2,99,13,103,1,103,5,107,2,107,10,111,1,5,111,115,1,2,115,119,1,119,6,0,99,2,0,14,0

66
day2/main.go Normal file
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package main
import (
"bufio"
"errors"
"log"
"os"
"strconv"
"strings"
)
func main() {
file, err := os.Open("input.txt")
if err != nil {
log.Fatal(err)
}
defer file.Close()
scanner := bufio.NewScanner(file)
if !scanner.Scan() {
log.Fatalln("Problem while read line.")
return
}
stringarr := strings.Split(scanner.Text(), ",")
var t2 = []int{}
for _, i := range stringarr {
j, err := strconv.Atoi(i)
if err != nil {
panic(err)
}
t2 = append(t2, j)
}
// ========= Finish now, we can solve the task ======
t2[1] = 12
t2[2] = 2
ParseArray(t2)
log.Println("Part1: " + strconv.Itoa(t2[0]))
}
func ParseArray(list []int) error {
for i := 0; i < len(list); i += 4 {
cmd := list[i]
if cmd == 99 {
return nil
}
num1 := list[list[i+1]]
num2 := list[list[i+2]]
sum := 0
if cmd == 1 {
sum = num1 + num2
} else if cmd == 2 {
sum = num1 * num2
} else {
return errors.New("Wrong Command (" + strconv.Itoa(cmd) + ") at position " + strconv.Itoa(i))
}
list[list[i+3]] = sum
}
return nil
}

83
day2/main_test.go Normal file
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package main
import (
"strconv"
"strings"
"testing"
)
func equalsArray(arr1 []int, arr2 []int) bool {
if len(arr1) != len(arr2) {
return false
}
for i := 0; i < len(arr1); i++ {
if arr1[i] != arr2[i] {
return false
}
}
return true
}
func join(arr []int) string {
valuesText := []string{}
for i := range arr {
number := arr[i]
text := strconv.Itoa(number)
valuesText = append(valuesText, text)
}
return strings.Join(valuesText, ",")
}
func TestCalcFuelRecusive1(t *testing.T) {
arr := []int{1, 0, 0, 0, 99}
err := ParseArray(arr)
if err != nil {
t.Errorf("Error where no error should be: %v", err)
}
sol := []int{2, 0, 0, 0, 99}
if !equalsArray(arr, sol) {
t.Errorf("Array was incorrect, got: {%s}, want: {%s}.", join(arr), join(sol))
}
}
func TestCalcFuelRecusive2(t *testing.T) {
arr := []int{2, 3, 0, 3, 99}
err := ParseArray(arr)
if err != nil {
t.Errorf("Error where no error should be: %v", err)
}
sol := []int{2, 3, 0, 6, 99}
if !equalsArray(arr, sol) {
t.Errorf("Array was incorrect, got: {%s}, want: {%s}.", join(arr), join(sol))
}
}
func TestCalcFuelRecusive3(t *testing.T) {
arr := []int{2, 4, 4, 5, 99, 0}
err := ParseArray(arr)
if err != nil {
t.Errorf("Error where no error should be: %v", err)
}
sol := []int{2, 4, 4, 5, 99, 9801}
if !equalsArray(arr, sol) {
t.Errorf("Array was incorrect, got: {%s}, want: {%s}.", join(arr), join(sol))
}
}
func TestCalcFuelRecusive4(t *testing.T) {
arr := []int{1, 1, 1, 4, 99, 5, 6, 0, 99}
err := ParseArray(arr)
if err != nil {
t.Errorf("Error where no error should be: %v", err)
}
sol := []int{30, 1, 1, 4, 2, 5, 6, 0, 99}
if !equalsArray(arr, sol) {
t.Errorf("Array was incorrect, got: {%s}, want: {%s}.", join(arr), join(sol))
}
}