70 lines
1.1 KiB
Go
70 lines
1.1 KiB
Go
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package solver
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import (
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"encoding/csv"
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"io"
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"log"
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"os"
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"strconv"
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)
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func (solver *Solver) load_blocks() {
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var blocks []int
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file, err := os.Open("blocks.csv")
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if err != nil {
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panic(err)
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}
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defer file.Close()
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r := csv.NewReader(file)
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for {
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record, err := r.Read()
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if err == io.EOF {
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break
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}
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if err != nil {
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log.Fatal(err)
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}
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block, _ := strconv.Atoi(record[0])
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blocks = append(blocks, block)
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}
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solver.blocks = blocks
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}
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func (solver *Solver) generate_blocks() []int {
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var blocks []int
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decvals := [9]int{49, 50, 51, 52, 53, 54, 55, 56, 57}
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for counter := 123456789; counter <= 987654321; counter++ {
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// Convert number to string ([]byte)
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digits := strconv.Itoa(counter)
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// Check if every number is only represented only once
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var valid bool
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valid = true
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for decval := range decvals {
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var count int
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for digit := range digits {
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if digits[digit] == byte(decvals[decval]) {
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count = count + 1
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}
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}
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if count != 1 {
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valid = false
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}
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}
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if valid {
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blocks = append(blocks, counter)
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}
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}
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return blocks
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}
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