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https://github.com/Threnklyn/advent-of-code-go.git
synced 2026-06-07 20:53:30 +02:00
refactor of day07 solution
This commit is contained in:
Alex Chao
@@ -1,228 +0,0 @@
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package intcode
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import "fmt"
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// Intcode runs the intcode computer on an inputted slice
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// func Intcode(puzzleInput []int) {
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// // default input slice, index 1 and 2 will be replaced
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// // puzzleInput := []int{3, 225, 1, 225, 6, 6, 1100, 1, 238, 225, 104, 0, 1, 192, 154, 224, 101, -161, 224, 224, 4, 224, 102, 8, 223, 223, 101, 5, 224, 224, 1, 223, 224, 223, 1001, 157, 48, 224, 1001, 224, -61, 224, 4, 224, 102, 8, 223, 223, 101, 2, 224, 224, 1, 223, 224, 223, 1102, 15, 28, 225, 1002, 162, 75, 224, 1001, 224, -600, 224, 4, 224, 1002, 223, 8, 223, 1001, 224, 1, 224, 1, 224, 223, 223, 102, 32, 57, 224, 1001, 224, -480, 224, 4, 224, 102, 8, 223, 223, 101, 1, 224, 224, 1, 224, 223, 223, 1101, 6, 23, 225, 1102, 15, 70, 224, 1001, 224, -1050, 224, 4, 224, 1002, 223, 8, 223, 101, 5, 224, 224, 1, 224, 223, 223, 101, 53, 196, 224, 1001, 224, -63, 224, 4, 224, 102, 8, 223, 223, 1001, 224, 3, 224, 1, 224, 223, 223, 1101, 64, 94, 225, 1102, 13, 23, 225, 1101, 41, 8, 225, 2, 105, 187, 224, 1001, 224, -60, 224, 4, 224, 1002, 223, 8, 223, 101, 6, 224, 224, 1, 224, 223, 223, 1101, 10, 23, 225, 1101, 16, 67, 225, 1101, 58, 10, 225, 1101, 25, 34, 224, 1001, 224, -59, 224, 4, 224, 1002, 223, 8, 223, 1001, 224, 3, 224, 1, 223, 224, 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, 1108, 226, 226, 224, 102, 2, 223, 223, 1005, 224, 329, 101, 1, 223, 223, 107, 226, 226, 224, 1002, 223, 2, 223, 1005, 224, 344, 1001, 223, 1, 223, 107, 677, 226, 224, 102, 2, 223, 223, 1005, 224, 359, 101, 1, 223, 223, 7, 677, 226, 224, 102, 2, 223, 223, 1005, 224, 374, 101, 1, 223, 223, 108, 226, 226, 224, 102, 2, 223, 223, 1006, 224, 389, 101, 1, 223, 223, 1007, 677, 677, 224, 102, 2, 223, 223, 1005, 224, 404, 101, 1, 223, 223, 7, 226, 677, 224, 102, 2, 223, 223, 1006, 224, 419, 101, 1, 223, 223, 1107, 226, 677, 224, 1002, 223, 2, 223, 1005, 224, 434, 1001, 223, 1, 223, 1108, 226, 677, 224, 102, 2, 223, 223, 1005, 224, 449, 101, 1, 223, 223, 108, 226, 677, 224, 102, 2, 223, 223, 1005, 224, 464, 1001, 223, 1, 223, 8, 226, 677, 224, 1002, 223, 2, 223, 1005, 224, 479, 1001, 223, 1, 223, 1007, 226, 226, 224, 102, 2, 223, 223, 1006, 224, 494, 101, 1, 223, 223, 1008, 226, 677, 224, 102, 2, 223, 223, 1006, 224, 509, 101, 1, 223, 223, 1107, 677, 226, 224, 1002, 223, 2, 223, 1006, 224, 524, 1001, 223, 1, 223, 108, 677, 677, 224, 1002, 223, 2, 223, 1005, 224, 539, 1001, 223, 1, 223, 1107, 226, 226, 224, 1002, 223, 2, 223, 1006, 224, 554, 1001, 223, 1, 223, 7, 226, 226, 224, 1002, 223, 2, 223, 1006, 224, 569, 1001, 223, 1, 223, 8, 677, 226, 224, 102, 2, 223, 223, 1006, 224, 584, 101, 1, 223, 223, 1008, 677, 677, 224, 102, 2, 223, 223, 1005, 224, 599, 101, 1, 223, 223, 1007, 226, 677, 224, 1002, 223, 2, 223, 1006, 224, 614, 1001, 223, 1, 223, 8, 677, 677, 224, 1002, 223, 2, 223, 1005, 224, 629, 101, 1, 223, 223, 107, 677, 677, 224, 102, 2, 223, 223, 1005, 224, 644, 101, 1, 223, 223, 1108, 677, 226, 224, 102, 2, 223, 223, 1005, 224, 659, 101, 1, 223, 223, 1008, 226, 226, 224, 102, 2, 223, 223, 1006, 224, 674, 1001, 223, 1, 223, 4, 223, 99, 226}
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// // Part 1: ID of System is 1 (use as the input)
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// // runDiagnostics(puzzleInput, 1)
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// // Part 2: ID of System is 5 (use as the input)
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// RunDiagnostics(puzzleInput, 0)
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// }
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// RunDiagnostics runs the entire computer on a puzzleInput and an inputValue
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func RunDiagnostics(puzzleInput []int, inputValue int, secondInputValue int) int {
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// store the lastOutputValue to be returned upon a 99
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var lastOutputValue int
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for i := 0; i < len(puzzleInput); {
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// find op code (last 2 digits of number), a 1, 2, 3, 4, or 99
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// find param1 and param2 which are the 100's and 1000's digit in the i-th element
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opCode, param1, param2, _ := returnCodes(puzzleInput[i])
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var firstVal, secondVal, thirdVal int
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// set value variables based on what the opCodes are (some of them will throw errors if I attempt to set them...)
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if opCode == 1 || opCode == 2 || opCode == 7 || opCode == 8 {
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firstVal, secondVal = getValue(puzzleInput, param1, puzzleInput[i+1]), getValue(puzzleInput, param2, puzzleInput[i+2])
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thirdVal = puzzleInput[i+3]
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} else if opCode == 3 || opCode == 4 {
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firstVal = puzzleInput[i+1]
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} else if opCode == 5 || opCode == 6 {
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firstVal, secondVal = getValue(puzzleInput, param1, puzzleInput[i+1]), getValue(puzzleInput, param2, puzzleInput[i+2])
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}
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// switch statement to handle the opcode value
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switch opCode {
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case 99:
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fmt.Println("99 halts IntCode instance")
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return lastOutputValue
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case 1:
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// add and place (by position)
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// firstToAdd, secondToAdd := getValue(puzzleInput, param1, puzzleInput[i+1]), getValue(puzzleInput, param2, puzzleInput[i+2])
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puzzleInput[thirdVal] = firstVal + secondVal
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i += 4
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case 2:
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// multiply and place (by position)
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puzzleInput[thirdVal] = firstVal * secondVal
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i += 4
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case 3:
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fmt.Println("--INPUT OPCODE 3")
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// write inputValue to puzzle input by position
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puzzleInput[firstVal] = inputValue
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// adding functionality for a second input value (to get the above lines to use it, overwrite the inputValue variable with the next argument that was passed in)
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inputValue = secondInputValue
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i += 2
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case 4:
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// output the value to the console, always by position
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fmt.Println("output: ", puzzleInput[firstVal])
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lastOutputValue = puzzleInput[firstVal]
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i += 2
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case 5:
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// jump-if-true
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// if first param is != 0 set instruction pointer to value from second parameter
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if firstVal != 0 {
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// fmt.Println("5 moves i to", secondVal)
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i = secondVal
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} else {
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// otherwise do nothing except increment i
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// increment by 3 (like opCode 6)
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i += 3
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}
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case 6:
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// jump-if-false
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// if first param is != 0 set instruction pointer to value from second parameter
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if firstVal == 0 {
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i = secondVal
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} else {
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// otherwise increment i to the next instruction
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// this instruction has 3 values, so i increments by 3
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i += 3
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}
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case 7:
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// less than - if firstVal < secondVal, store a 1 @ position of thirdVal, otherwise store a 0
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if firstVal < secondVal {
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puzzleInput[thirdVal] = 1
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} else {
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puzzleInput[thirdVal] = 0
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}
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i += 4
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case 8:
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// equals, same as opCode 7 but conditional is firstVal is equal to secondVal
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if firstVal == secondVal {
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puzzleInput[thirdVal] = 1
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} else {
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puzzleInput[thirdVal] = 0
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}
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i += 4
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default:
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fmt.Println("bad opCode!!! returning -999")
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return -999
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}
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}
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fmt.Println("shouldn't have reached end of function, returning -1000")
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return -1000
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}
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func returnCodes(number int) (int, int, int, int) {
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return number % 100, (number % 1000) / 100, (number % 10000) / 1000, (number % 100000) / 10000
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}
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func getValue(puzzleInput []int, positionOrImmediateCode int, nextOrTwoPastValue int) int {
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// read if the param is for position or immediate mode and return the value (to be added or multiplied)
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if positionOrImmediateCode == 0 {
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// 0 is position mode
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return puzzleInput[nextOrTwoPastValue]
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}
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// otherwise it's immediate mode (no-else-return)
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return nextOrTwoPastValue
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}
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// note: a solution to part 1 that I looked up to get some insight into golang
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// package main
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// import (
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// "fmt"
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// "math"
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// "os"
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// )
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// func main() {
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// // var instructionStrings []string
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// var results []int
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// // input := 1
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// // file, err := os.Open("./input.txt")
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// // if err != nil {
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// // log.Fatal(err)
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// // }
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// // defer file.Close()
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// // scanner := bufio.NewScanner(file)
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// // for scanner.Scan() {
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// // line := scanner.Text()
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// // instructionStrings = strings.Split(line, ",")
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// // }
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// // instructions := make([]int, len(instructionStrings))
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// // for i, v := range instructionStrings {
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// // instructions[i], _ = strconv.Atoi(v)
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// // }
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// // note pasted in instructions slice
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// instructions := []int{3, 225, 1, 225, 6, 6, 1100, 1, 238, 225, 104, 0, 1, 192, 154, 224, 101, -161, 224, 224, 4, 224, 102, 8, 223, 223, 101, 5, 224, 224, 1, 223, 224, 223, 1001, 157, 48, 224, 1001, 224, -61, 224, 4, 224, 102, 8, 223, 223, 101, 2, 224, 224, 1, 223, 224, 223, 1102, 15, 28, 225, 1002, 162, 75, 224, 1001, 224, -600, 224, 4, 224, 1002, 223, 8, 223, 1001, 224, 1, 224, 1, 224, 223, 223, 102, 32, 57, 224, 1001, 224, -480, 224, 4, 224, 102, 8, 223, 223, 101, 1, 224, 224, 1, 224, 223, 223, 1101, 6, 23, 225, 1102, 15, 70, 224, 1001, 224, -1050, 224, 4, 224, 1002, 223, 8, 223, 101, 5, 224, 224, 1, 224, 223, 223, 101, 53, 196, 224, 1001, 224, -63, 224, 4, 224, 102, 8, 223, 223, 1001, 224, 3, 224, 1, 224, 223, 223, 1101, 64, 94, 225, 1102, 13, 23, 225, 1101, 41, 8, 225, 2, 105, 187, 224, 1001, 224, -60, 224, 4, 224, 1002, 223, 8, 223, 101, 6, 224, 224, 1, 224, 223, 223, 1101, 10, 23, 225, 1101, 16, 67, 225, 1101, 58, 10, 225, 1101, 25, 34, 224, 1001, 224, -59, 224, 4, 224, 1002, 223, 8, 223, 1001, 224, 3, 224, 1, 223, 224, 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, 1108, 226, 226, 224, 102, 2, 223, 223, 1005, 224, 329, 101, 1, 223, 223, 107, 226, 226, 224, 1002, 223, 2, 223, 1005, 224, 344, 1001, 223, 1, 223, 107, 677, 226, 224, 102, 2, 223, 223, 1005, 224, 359, 101, 1, 223, 223, 7, 677, 226, 224, 102, 2, 223, 223, 1005, 224, 374, 101, 1, 223, 223, 108, 226, 226, 224, 102, 2, 223, 223, 1006, 224, 389, 101, 1, 223, 223, 1007, 677, 677, 224, 102, 2, 223, 223, 1005, 224, 404, 101, 1, 223, 223, 7, 226, 677, 224, 102, 2, 223, 223, 1006, 224, 419, 101, 1, 223, 223, 1107, 226, 677, 224, 1002, 223, 2, 223, 1005, 224, 434, 1001, 223, 1, 223, 1108, 226, 677, 224, 102, 2, 223, 223, 1005, 224, 449, 101, 1, 223, 223, 108, 226, 677, 224, 102, 2, 223, 223, 1005, 224, 464, 1001, 223, 1, 223, 8, 226, 677, 224, 1002, 223, 2, 223, 1005, 224, 479, 1001, 223, 1, 223, 1007, 226, 226, 224, 102, 2, 223, 223, 1006, 224, 494, 101, 1, 223, 223, 1008, 226, 677, 224, 102, 2, 223, 223, 1006, 224, 509, 101, 1, 223, 223, 1107, 677, 226, 224, 1002, 223, 2, 223, 1006, 224, 524, 1001, 223, 1, 223, 108, 677, 677, 224, 1002, 223, 2, 223, 1005, 224, 539, 1001, 223, 1, 223, 1107, 226, 226, 224, 1002, 223, 2, 223, 1006, 224, 554, 1001, 223, 1, 223, 7, 226, 226, 224, 1002, 223, 2, 223, 1006, 224, 569, 1001, 223, 1, 223, 8, 677, 226, 224, 102, 2, 223, 223, 1006, 224, 584, 101, 1, 223, 223, 1008, 677, 677, 224, 102, 2, 223, 223, 1005, 224, 599, 101, 1, 223, 223, 1007, 226, 677, 224, 1002, 223, 2, 223, 1006, 224, 614, 1001, 223, 1, 223, 8, 677, 677, 224, 1002, 223, 2, 223, 1005, 224, 629, 101, 1, 223, 223, 107, 677, 677, 224, 102, 2, 223, 223, 1005, 224, 644, 101, 1, 223, 223, 1108, 677, 226, 224, 102, 2, 223, 223, 1005, 224, 659, 101, 1, 223, 223, 1008, 226, 226, 224, 102, 2, 223, 223, 1006, 224, 674, 1001, 223, 1, 223, 4, 223, 99, 226}
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// input := 1
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// index := 0
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// for {
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// opcode, arg1, arg2, arg3 := getValues(instructions, index)
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// switch opcode {
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// case 1:
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// instructions[arg3] = arg1 + arg2
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// index += 4
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// case 2:
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// instructions[arg3] = arg1 * arg2
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// index += 4
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// case 3:
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// instructions[arg1] = input
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// index += 2
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// case 4:
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// results = append(results, instructions[arg1])
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// index += 2
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// case 99:
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// fmt.Println(results)
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// os.Exit(0)
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// default:
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// fmt.Println("Invalid opcode")
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// os.Exit(1)
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// }
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// }
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// }
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// func getValues(instructions []int, index int) (int, int, int, int) {
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// instruction := instructions[index]
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// if instruction == 99 {
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// return instruction, 0, 0, 0
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// }
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// opcode := instruction % 100
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// if opcode == 3 || opcode == 4 {
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// return opcode, instructions[index+1], 0, 0
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// }
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// // tests if opcode is 1 or 2...
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// // if inSlice([]int{1, 2}, opcode) {
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// if opcode == 1 || opcode == 2 {
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// // variables to store the values that the op code should use
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// var arg1, arg2, arg3 int
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// // arg 3 is where to write the next value to, (it's always by position)
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// arg3 = instructions[index+3]
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// if math.Floor(float64((instruction%1000)/100)) == 1 {
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// // 1 is immediate mode
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// arg1 = instructions[index+1]
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// } else {
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// // otherwise 0 is position mode
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// arg1 = instructions[instructions[index+1]]
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// }
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// if math.Floor(float64((instruction%10000)/1000)) == 1 {
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// arg2 = instructions[index+2] // immediate
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// } else {
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// arg2 = instructions[instructions[index+2]] // position
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// }
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// // return the list of arrays
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// return opcode, arg1, arg2, arg3
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// }
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// return opcode, 0, 0, 0
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// }
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+184
-24
@@ -1,40 +1,200 @@
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/*
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Intcode struct is defined within this file
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MakePermutations is in the util package as that will likely be reused
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*/
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package main
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import (
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"adventofcode/util"
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"fmt"
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"log"
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"strconv"
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"strings"
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"adventofcode/day07/part1/intcode"
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"adventofcode/day07/part1/permutations"
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"adventofcode/util"
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)
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// input to first amp = 0
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// output of each amp is input of next amp
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// final output is from amp #5 / E to thrusters
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func main() {
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readInput := util.ReadFile("../input.txt")
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strSplit := strings.Split(readInput, ",")
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// read the input file, modify it to a slice of numbers
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inputFile := util.ReadFile("../input.txt")
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input := make([]int, len(strSplit))
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for i, v := range strSplit {
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input[i], _ = strconv.Atoi(v)
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splitStrings := strings.Split(inputFile, ",")
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inputNumbers := make([]int, len(splitStrings))
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for i, v := range splitStrings {
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inputNumbers[i], _ = strconv.Atoi(v)
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}
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// create all permutations of 0, 1, 2, 3, 4
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perms := permutations.CreatePermutations()
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// fmt.Println(perms)
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// Make perms via a util function
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perms := util.MakePermutations([]int{0, 1, 2, 3, 4})
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highestReturn := 0
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for _, onePerm := range perms {
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lastOutput := 0
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for _, firstInput := range onePerm {
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lastOutput = intcode.RunDiagnostics(input, firstInput, lastOutput)
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}
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if lastOutput > highestReturn {
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highestReturn = lastOutput
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// iterate over all perms and run through a single pass of the Amps
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// if the final output (from Amp E) is higher, update the highestOutput variable
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highestOutput := 0
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for _, perm := range *perms {
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// initialize 5 computers
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ampA := MakeComputer(inputNumbers, perm[0])
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ampB := MakeComputer(inputNumbers, perm[1])
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ampC := MakeComputer(inputNumbers, perm[2])
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ampD := MakeComputer(inputNumbers, perm[3])
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ampE := MakeComputer(inputNumbers, perm[4])
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// first input (besides phase setting) to Amp A is zero
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ampA.Step(0)
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ampB.Step(ampA.LastOutput)
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ampC.Step(ampB.LastOutput)
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ampD.Step(ampC.LastOutput)
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ampE.Step(ampD.LastOutput)
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if ampE.LastOutput > highestOutput {
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highestOutput = ampE.LastOutput
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}
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}
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fmt.Println("highestReturn is", highestReturn)
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// print highest output found
|
||||
fmt.Printf("Highest output is %v\n", highestOutput)
|
||||
}
|
||||
|
||||
/*
|
||||
Intcode is an OOP approach *************************************************
|
||||
MakeComputer is equivalent to the constructor
|
||||
Step takes in an input int and updates properties in the computer:
|
||||
- InstructionIndex: where to read the next instruction from
|
||||
- LastOutput, what the last opcode 4 outputted
|
||||
- PuzzleIndex based if the last instruction modified the puzzle at all
|
||||
****************************************************************************/
|
||||
type Intcode struct {
|
||||
PhaseSetting int // initial input: ID or number used to "prime"/setup the comp
|
||||
PuzzleInput []int // file/puzzle input parsed into slice of ints
|
||||
InstructionIndex int // stores the index where the next instruction is
|
||||
LastOutput int // last output from an opcode 4
|
||||
}
|
||||
|
||||
// MakeComputer initializes a new comp
|
||||
func MakeComputer(PuzzleInput []int, PhaseSetting int) Intcode {
|
||||
puzzleInputCopy := make([]int, len(PuzzleInput))
|
||||
copy(puzzleInputCopy, PuzzleInput)
|
||||
|
||||
comp := Intcode{
|
||||
PhaseSetting,
|
||||
puzzleInputCopy,
|
||||
0,
|
||||
0,
|
||||
}
|
||||
|
||||
// Prime the computer by running its initial phase setting through it
|
||||
// This will update the comp's InstructionIndex so it's pointing to the next command
|
||||
// will also update the PuzzleInput itself via opcode 3's insert
|
||||
// AND will run the computer until it asks for the next input, _comp is now primed_
|
||||
comp.Step(PhaseSetting)
|
||||
return comp
|
||||
}
|
||||
|
||||
// Step will read the next 4 values in the input `sli` and make updates
|
||||
// according to the opcodes
|
||||
func (comp *Intcode) Step(input int) int {
|
||||
// read the instruction, opcode and the indexes where the params point to
|
||||
opcode, paramIndexes := comp.GetOpCodeAndIndexes()
|
||||
|
||||
switch opcode {
|
||||
case 99: // 99: Terminates program
|
||||
// fmt.Println("Terminating...")
|
||||
return input
|
||||
case 1: // 1: Add next two paramIndexes, store in third
|
||||
comp.PuzzleInput[paramIndexes[2]] = comp.PuzzleInput[paramIndexes[0]] + comp.PuzzleInput[paramIndexes[1]]
|
||||
comp.InstructionIndex += 4
|
||||
return comp.Step(input)
|
||||
case 2: // 2: Multiply next two and store in third
|
||||
comp.PuzzleInput[paramIndexes[2]] = comp.PuzzleInput[paramIndexes[0]] * comp.PuzzleInput[paramIndexes[1]]
|
||||
comp.InstructionIndex += 4
|
||||
return comp.Step(input)
|
||||
case 3: // 3: Takes one input and saves it to position of one parameter
|
||||
// check if input has already been used (i.e. input == -1)
|
||||
// if it's been used, return the LastOutput
|
||||
// NOTE: making a big assumption that -1 will never be an input...
|
||||
if input == -1 {
|
||||
return comp.LastOutput
|
||||
}
|
||||
|
||||
// otherwise use the input, then recurse with a -1 to signal the initial input has been used
|
||||
comp.PuzzleInput[paramIndexes[0]] = input
|
||||
comp.InstructionIndex += 2
|
||||
return comp.Step(-1)
|
||||
case 4: // 4: outputs its input value
|
||||
// set LastOutput of the computer & log it
|
||||
comp.LastOutput = comp.PuzzleInput[paramIndexes[0]]
|
||||
// fmt.Printf("Opcode 4 output: %v\n", comp.LastOutput)
|
||||
comp.InstructionIndex += 2
|
||||
|
||||
// continue running until terminates or asks for another input
|
||||
return comp.Step(input)
|
||||
// 5: jump-if-true: if first param != 0, move pointer to second param, else nothing
|
||||
case 5:
|
||||
if comp.PuzzleInput[paramIndexes[0]] != 0 {
|
||||
comp.InstructionIndex = comp.PuzzleInput[paramIndexes[1]]
|
||||
} else {
|
||||
comp.InstructionIndex += 3
|
||||
}
|
||||
return comp.Step(input)
|
||||
// 6: jump-if-false, if first param == 0 then set instruction pointer to 2nd param, else nothing
|
||||
case 6:
|
||||
if comp.PuzzleInput[paramIndexes[0]] == 0 {
|
||||
comp.InstructionIndex = comp.PuzzleInput[paramIndexes[1]]
|
||||
} else {
|
||||
comp.InstructionIndex += 3
|
||||
}
|
||||
return comp.Step(input)
|
||||
// 7: less-than, if param1 < param2 then store 1 in postion of 3rd param, else store 0
|
||||
case 7:
|
||||
if comp.PuzzleInput[paramIndexes[0]] < comp.PuzzleInput[paramIndexes[1]] {
|
||||
comp.PuzzleInput[paramIndexes[2]] = 1
|
||||
} else {
|
||||
comp.PuzzleInput[paramIndexes[2]] = 0
|
||||
}
|
||||
comp.InstructionIndex += 4
|
||||
return comp.Step(input)
|
||||
// 8: equals, if param1 == param2 then set position of 3rd param to 1, else store 0
|
||||
case 8:
|
||||
if comp.PuzzleInput[paramIndexes[0]] == comp.PuzzleInput[paramIndexes[1]] {
|
||||
comp.PuzzleInput[paramIndexes[2]] = 1
|
||||
} else {
|
||||
comp.PuzzleInput[paramIndexes[2]] = 0
|
||||
}
|
||||
comp.InstructionIndex += 4
|
||||
return comp.Step(input)
|
||||
default:
|
||||
log.Fatal("Error: unknown opcode: ", opcode)
|
||||
}
|
||||
// this should never be called b/c switch statement will always return
|
||||
return -1
|
||||
}
|
||||
|
||||
/*
|
||||
GetOpCodeAndIndexes will parse the instruction at comp.PuzzleInput[comp.InstructionIndex]
|
||||
- opcode will be the left two digits, mod by 100 will get that
|
||||
- rest of instructions will be grabbed via mod 10
|
||||
- these also have to be parsed for the
|
||||
*/
|
||||
func (comp *Intcode) GetOpCodeAndIndexes() (int, [3]int) {
|
||||
instruction := comp.PuzzleInput[comp.InstructionIndex]
|
||||
|
||||
// opcode is the lowest two digits, so mod by 100
|
||||
opcode := instruction % 100
|
||||
instruction /= 100
|
||||
|
||||
// assign the indexes that need to be read by reading the parameter modes
|
||||
var paramIndexes [3]int
|
||||
for i := 1; i <= 3 && comp.InstructionIndex+i < len(comp.PuzzleInput); i++ {
|
||||
// grab the mode with a mod, last digit
|
||||
mode := instruction % 10
|
||||
instruction /= 10
|
||||
|
||||
switch mode {
|
||||
case 1: // immediate mode, the index itself
|
||||
paramIndexes[i-1] = comp.InstructionIndex + i
|
||||
case 0: // position mode, index will be the value at the index
|
||||
paramIndexes[i-1] = comp.PuzzleInput[comp.InstructionIndex+i]
|
||||
}
|
||||
}
|
||||
|
||||
return opcode, paramIndexes
|
||||
}
|
||||
|
||||
@@ -1,59 +0,0 @@
|
||||
package permutations
|
||||
|
||||
// CreatePermutations will return a 2D slice containing permutations from zero to the inputted int
|
||||
// func CreatePermutations(size int) [][]int {
|
||||
// result := make([][]int, 0)
|
||||
|
||||
// helper := func(digits []int, builder []int) {
|
||||
|
||||
// newDigits := make([]int, len(digits))
|
||||
// copy(newDigits, digits)
|
||||
|
||||
// if len(digits) == 0 {
|
||||
// // use the reference point in memory
|
||||
// result = append(result, builder)
|
||||
// } else {
|
||||
// for index, digit := range newDigits {
|
||||
// fmt.Println("append", append(newDigits[:index], newDigits[index+1:]...))
|
||||
// fmt.Println("builder", append(builder, digit))
|
||||
// helper(append(newDigits[:index], newDigits[index+1:]...), append(builder, digit))
|
||||
// // fmt.Println("looping")
|
||||
// }
|
||||
// }
|
||||
|
||||
// }
|
||||
|
||||
// helper([]int{0, 1, 2, 3, 4}, make([]int, 0))
|
||||
|
||||
// return result
|
||||
// }
|
||||
|
||||
func nextPerm(p []int) {
|
||||
for i := len(p) - 1; i >= 0; i-- {
|
||||
if i == 0 || p[i] < len(p)-i-1 {
|
||||
p[i]++
|
||||
return
|
||||
}
|
||||
p[i] = 0
|
||||
}
|
||||
}
|
||||
|
||||
func getPerm(orig, p []int) []int {
|
||||
result := append([]int{}, orig...)
|
||||
for i, v := range p {
|
||||
result[i], result[i+v] = result[i+v], result[i]
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// CreatePermutations docz
|
||||
func CreatePermutations() [][]int {
|
||||
orig := []int{0, 1, 2, 3, 4}
|
||||
results := make([][]int, 0)
|
||||
|
||||
for p := make([]int, len(orig)); p[0] < len(p); nextPerm(p) {
|
||||
// fmt.Println(getPerm(orig, p))
|
||||
results = append(results, getPerm(orig, p))
|
||||
}
|
||||
return results
|
||||
}
|
||||
Reference in New Issue
Block a user