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move check is loop logic to top of loop

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onyx-and-iris 2024-12-06 23:17:44 +00:00
parent 08706ecc11
commit 02443ef244
1 changed files with 5 additions and 6 deletions
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11
day-06/internal/two/solve.go
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@ -35,19 +35,18 @@ func Solve(buf []byte) (int, error) {
p.y == 0 && p.direction == N || p.y == 0 && p.direction == N ||
p.y == len(g.data)-1 && p.direction == S || p.y == len(g.data)-1 && p.direction == S ||
p.x == len(g.data[p.y])-1 && p.direction == E) { p.x == len(g.data[p.y])-1 && p.direction == E) {
p = nextPoint(p)
if g.valueAt(p.x, p.y) == '#' || g.valueAt(p.x, p.y) == 'O' {
p.recalibrate()
}
_, ok := visited[p] _, ok := visited[p]
if ok { if ok {
log.Tracef("loop: \n%s\n", g.trace(visited)) log.Tracef("loop: \n%s\n", g.trace(visited))
isLoop <- true isLoop <- true
return return
} }
visited[p] = struct{}{} visited[p] = struct{}{}
p = nextPoint(p)
if g.valueAt(p.x, p.y) == '#' || g.valueAt(p.x, p.y) == 'O' {
p.recalibrate()
}
} }
isLoop <- false isLoop <- false
}() }()