mirror of
https://github.com/Threnklyn/advent-of-code-go.git
synced 2026-05-18 19:13:27 +02:00
alexchao26
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
package main
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import "fmt"
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func calcValue(input []int, target int, noun int, verb int) bool {
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// update the 1 and 2 values here
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input[1] = noun
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input[2] = verb
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// fmt.Println(input)
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// loop through all "instructions"
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for i := 0; i < len(input); i += 4 {
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// check opertor type (1 2 or 99)
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operator := input[i]
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// if it's not 99 (don't terminate, and run a calculation)
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if operator != 99 {
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// grab the two values to be added or multiplied
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value1 := input[input[i+1]]
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value2 := input[input[i+2]]
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// grab the index that will get the new value
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indexToUpdate := input[i+3]
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// perform calcuation based on operator value
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if operator == 1 {
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input[indexToUpdate] = value1 + value2
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} else if operator == 2 {
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input[indexToUpdate] = value1 * value2
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}
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} else {
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// if it is 99, break out of this loop
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break
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}
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}
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// if the target value is found, return true
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if input[0] == target {
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return true
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}
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return false
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}
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func main() {
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// defualt input slice, index 1 and 2 will be replaced
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input := []int{1, 12, 2, 3, 1, 1, 2, 3, 1, 3, 4, 3, 1, 5, 0, 3, 2, 1, 6, 19, 1, 19, 5, 23, 2, 13, 23, 27, 1, 10, 27, 31, 2, 6, 31, 35, 1, 9, 35, 39, 2, 10, 39, 43, 1, 43, 9, 47, 1, 47, 9, 51, 2, 10, 51, 55, 1, 55, 9, 59, 1, 59, 5, 63, 1, 63, 6, 67, 2, 6, 67, 71, 2, 10, 71, 75, 1, 75, 5, 79, 1, 9, 79, 83, 2, 83, 10, 87, 1, 87, 6, 91, 1, 13, 91, 95, 2, 10, 95, 99, 1, 99, 6, 103, 2, 13, 103, 107, 1, 107, 2, 111, 1, 111, 9, 0, 99, 2, 14, 0, 0}
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// brute force to try all options for nouns and verbs
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outer:
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for i := 0; i < 100; i++ {
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for j := 0; j < 100; j++ {
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// crete a copy of the input slice
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clone := make([]int, 120)
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copy(clone, input)
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// if the calcValue function returns true, break out of the loops and print the values to the console
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if calcValue(clone, 19690720, i, j) == true {
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// print answers to console (manually add to advent of code)
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fmt.Println("noun is", i, "verb is", j)
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fmt.Println("actual result value noun * 10 + verb = ", i*100+j)
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// use labeled outer loop to break out of both for loops
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break outer
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}
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}
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}
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}
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