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2024 day 7 - part 2

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This commit is contained in:
Mans Ziesel 2024-12-07 14:33:17 +01:00
parent 3fd95ca53d
commit 942c629d86
1 changed files with 32 additions and 51 deletions
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83
2024/day-07/main.go
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@ -11,7 +11,7 @@ import (
)
func main() {
file, err := os.Open("./input_test.txt")
file, err := os.Open("./input.txt")
if err != nil {
log.Fatalf("failed to open file: %s\n", err)
}
@ -49,21 +49,6 @@ func main() {
}
fmt.Println("result part1: ", result1)
// result1 := 0
//
// var nums []int
// nums = append(nums, 81, 40, 27)
//
// var mulEq []rune = make([]rune, 0)
// mulEq = append(mulEq, '*')
// var addEq []rune = make([]rune, 0)
// addEq = append(addEq, '+')
//
// testSolution(&result1, 3267, nums, mulEq)
// testSolution(&result1, 3267, nums, addEq)
//
// fmt.Println("result part1: ", result1)
}
func testSolution(result *bool, answer int, numbers []int, currentEquasion []rune) {
@ -75,50 +60,46 @@ func testSolution(result *bool, answer int, numbers []int, currentEquasion []run
localNums := make([]int, len(numbers))
copy(localNums, numbers)
// maxlen := len(localNums)
for i := len(localNums) - 1; i > 0; i-- {
op := localEq[i-1]
if op == '|' {
// fmt.Println("befor: ", answer, localNums, string(localEq))
newNum := ""
newNum += fmt.Sprint(localNums[i-1])
newNum += fmt.Sprint(localNums[i])
newInt, err := strconv.Atoi(newNum)
if err != nil {
log.Fatal(err)
}
localNums[i-1] = newInt
localNums = slices.Delete(localNums, i, i+1)
localEq = slices.Delete(localEq, i-1, i)
// fmt.Printf("i: %d, op: %s, new: %d\n", i, string(op), newInt)
// fmt.Println("after: ", answer, localNums, string(localEq))
// fmt.Println()
// fmt.Println()
}
}
res := localNums[0]
for i := 1; i < len(localNums); i++ {
op := localEq[i-1]
if op == '*' {
res = (res * localNums[i])
for i := 0; i < len(localNums)-1; i++ {
op := localEq[i]
newNum := localNums[i]
var err error
switch op {
case '|':
{
newNum, err = strconv.Atoi(fmt.Sprint(localNums[i]) + fmt.Sprint(localNums[i+1]))
}
case '*':
{
newNum *= localNums[i+1]
}
case '+':
{
newNum += localNums[i+1]
}
}
if op == '+' {
res = (res + localNums[i])
if err != nil {
log.Fatal(err)
}
localNums[i] = newNum
localNums = slices.Delete(localNums, i+1, i+2)
localEq = slices.Delete(localEq, i, i+1)
i--
if i < 0 {
res = newNum
}
}
fmt.Printf("ans: %d, nums: %d, eq: %s, res: %d\n", answer, localNums, string(localEq), res)
if res == answer {
fmt.Println(res, " correct")
*result = true
}
// fmt.Println(answer, numbers, currentEquasion, res)
return
}