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- package main
- import (
- "fmt"
- "io/ioutil"
- "log"
- "os"
- "sort"
- "strconv"
- "strings"
- )
- func readInput(file string) (map[int]int, []int) {
- content, err := ioutil.ReadFile(file)
- if err != nil {
- log.Fatal(err)
- }
- numberStrings := strings.Split(string(content), ",")
- crabs := make(map[int]int)
- var orderedCrabs []int
- for _, numberString := range numberStrings {
- if numberString == "" {
- continue
- }
- if number, err := strconv.Atoi(numberString); err == nil {
- if _, ok := crabs[number]; !ok {
- orderedCrabs = append(orderedCrabs, number)
- }
- crabs[number]++
- } else {
- log.Fatal(err)
- }
- }
- sort.Ints(orderedCrabs)
- return crabs, orderedCrabs
- }
- func main() {
- if len(os.Args) < 2 {
- log.Fatal("Please provide a file name as argument")
- }
- crabs, orderedCrabs := readInput(os.Args[1])
- fmt.Println(crabs, orderedCrabs)
- }
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