65 lines
991 B
Go
65 lines
991 B
Go
package main
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import (
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"bufio"
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"fmt"
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"log"
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"os"
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"strconv"
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)
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func main() {
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inp := StdinToInts()
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inp2 := make([]int, len(inp))
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copy(inp2, inp)
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part1(inp)
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part2(inp2)
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}
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func part1(inp []int) {
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fmt.Println("= Part 1 =")
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idx, steps := 0, 0
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for idx >= 0 && idx < len(inp) {
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jmp := inp[idx]
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inp[idx] = inp[idx] + 1
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idx = idx + jmp
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steps++
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}
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fmt.Println("Total Steps:", steps)
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}
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func part2(inp []int) {
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fmt.Println("= Part 2 =")
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idx, steps := 0, 0
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for idx >= 0 && idx < len(inp) {
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jmp := inp[idx]
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if jmp >= 3 {
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inp[idx] = inp[idx] - 1
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} else {
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inp[idx] = inp[idx] + 1
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}
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idx = idx + jmp
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steps++
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}
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fmt.Println("Total Steps:", steps)
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}
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func StdinToInts() []int {
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var input []int
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scanner := bufio.NewScanner(os.Stdin)
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for scanner.Scan() {
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input = append(input, Atoi(scanner.Text()))
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}
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return input
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}
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func Atoi(i string) int {
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var ret int
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var err error
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if ret, err = strconv.Atoi(i); err != nil {
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log.Fatal("Invalid Atoi")
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}
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return ret
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}
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