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36 lines
569 B
Go
36 lines
569 B
Go
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package two
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import (
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"bufio"
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"io"
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"maps"
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)
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func parseLines(r io.Reader) (*graph, error) {
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graph := newGraph()
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scanner := bufio.NewScanner(r)
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for scanner.Scan() {
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graph.data = append(graph.data, scanner.Text())
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}
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if err := scanner.Err(); err != nil {
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return nil, err
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}
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return graph, nil
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}
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func replaceAtIndex(s string, r rune, i int) string {
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out := []rune(s)
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out[i] = r
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return string(out)
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}
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func firstPointFromMap(visited map[point]struct{}) point {
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for k := range maps.Keys(visited) {
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return k
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}
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panic("unable to fetch points from map")
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}
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