57 lines
805 B
Go
57 lines
805 B
Go
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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 loadPrimes() []int64 {
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return loadPrimesTxt()
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}
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func loadPrimesTxt() []int64 {
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file, err := os.Open("prime.txt")
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if err != nil {
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log.Fatal(err)
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}
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var primes []int64
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scanner := bufio.NewScanner(file)
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for scanner.Scan() {
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nextPrime, err := strconv.ParseInt(scanner.Text(), 10, 64)
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if err != nil {
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log.Fatal(err)
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}
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primes = append(primes, nextPrime)
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}
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file.Close()
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return primes
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}
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func writePrimes(primes []int64) {
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writePrimesTxt(primes)
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}
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func writePrimesTxt(primes []int64) {
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file, err := os.Create("prime.txt")
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if err != nil {
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log.Fatal(err)
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}
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writer := bufio.NewWriter(file)
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for _, prime := range primes {
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writer.WriteString(fmt.Sprintf("%d\n", prime))
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}
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writer.Flush()
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file.Close()
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}
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