53 lines
1.1 KiB
Go
53 lines
1.1 KiB
Go
package utilities
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import (
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"strconv"
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"strings"
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)
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const (
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opAdd = 1
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opMul = 2
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opEnd = 99
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)
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type IntcodeProgram []int64
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func ParseIntcodeProgram(programStr string) IntcodeProgram {
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nums := strings.Split(programStr, ",")
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program := make(IntcodeProgram, len(nums))
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for idx, num := range nums {
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iNum, err := strconv.ParseInt(num, 10, 64)
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if err != nil {
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panic(err)
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}
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program[idx] = iNum
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}
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return program
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}
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func RunIntcodeProgram(program IntcodeProgram) {
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for instructionPointer := 0; instructionPointer < len(program); {
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opcode := program[instructionPointer]
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switch opcode {
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case opAdd:
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param1 := program[instructionPointer+1]
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param2 := program[instructionPointer+2]
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param3 := program[instructionPointer+3]
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program[param3] = program[param1] + program[param2]
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instructionPointer += 4
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case opMul:
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param1 := program[instructionPointer+1]
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param2 := program[instructionPointer+2]
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param3 := program[instructionPointer+3]
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program[param3] = program[param1] * program[param2]
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instructionPointer += 4
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case opEnd:
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instructionPointer = len(program)
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}
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}
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}
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