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39 lines
610 B
39 lines
610 B
package day08
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func runProgram(rows []Operation, useLog bool) int {
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// Log of pos => accumulators executed
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runlog := make(map[int]int)
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pos := 0
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acc := 1 // Start accumulator one above than it should be
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for true {
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if pos >= len(rows) {
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break
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}
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// Otherwise the if here doesn't work
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if runlog[pos] > 0 {
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if useLog {
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break
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} else {
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return 0
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}
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}
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runlog[pos] = acc
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switch rows[pos].Operation {
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case "acc":
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acc += rows[pos].Argument
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case "jmp":
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pos += rows[pos].Argument - 1
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case "nop":
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}
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pos++
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}
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// And substract the accumulator here
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return acc - 1
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}
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