Created
December 2, 2020 17:20
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| package main | |
| import ( | |
| "fmt" | |
| "github.com/spellgen/scan" | |
| "os" | |
| ) | |
| type passLine struct { | |
| s int | |
| e int | |
| ch string | |
| list string | |
| } | |
| func (p passLine) Parse(in string) (scan.LineScanner, bool) { | |
| n, err := fmt.Sscanf(in, "%d-%d %s%s", &p.s, &p.e, &p.ch, &p.list) | |
| return p, n == 4 && err == nil | |
| } | |
| func main() { | |
| if len(os.Args) < 2 { | |
| panic("no args") | |
| } | |
| file := os.Args[1] | |
| fh, err := os.Open(file) | |
| if err != nil { | |
| panic(err) | |
| } | |
| data, err := scan.ReadAll(fh, passLine{}) | |
| if err != nil { | |
| panic(err) | |
| } | |
| t1sum := 0 | |
| t2sum := 0 | |
| for _, p := range data { | |
| if test1(p.(passLine)) { | |
| t1sum++ | |
| } | |
| if test2(p.(passLine)) { | |
| t2sum++ | |
| } | |
| } | |
| fmt.Printf("test1=%d\n", t1sum) | |
| fmt.Printf("test2=%d\n", t2sum) | |
| } | |
| func test1(p passLine) bool { | |
| ch := p.ch[0] | |
| var n = 0 | |
| for k := range p.list { | |
| if p.list[k]==ch { | |
| n++ | |
| } | |
| } | |
| return n>=p.s && n<=p.e | |
| } | |
| func test2(p passLine) bool { | |
| ch := p.ch[0] | |
| count := 0 | |
| if p.list[p.s-1]==ch { | |
| count++ | |
| } | |
| if p.list[p.e-1]==ch { | |
| count++ | |
| } | |
| return count==1 | |
| } |
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