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コマンドラインから文字列の取得

Posted at

初めに

Atcoderの文字列取得の定石を貼ります。

#コマンドラインから複数行一度に取得

package main

import(
   "fmt"
   "bufio"
   "stdin"
)

func main(){
  lines := getStdin()
  for k,v := range lines{
    fmt.Printf("line[%s]=%s\n",k,v)
  }
  
}

func getStdin() []string {
	stdin := bufio.NewScanner(os.Stdin)
	lines := []string{}
	for stdin.Scan() {
		if err := stdin.Err(); err != nil {
			fmt.Fprintln(os.Stderr, err)
		}
		lines = append(lines, stdin.Text())
	}
	return lines
}

実行結果

$go run sample.go
a b c d e//コマンドライン入力
f g h i j//コマンドライン入力
line[0]="a b c d e"//出力
line[1]="f g h i j"//出力

#コマンドラインから得た文字列を空白区切りで返す(string型)

func splitspace(line string) []string {
	words := strings.Split(line, " ")
	return words
}

#コマンドラインから得た文字列を空白区切りで返す(int型)

func splitspace(line string) []int {
	buf := strings.Split(line, " ")
	num := stringToInt(buf)
	return t
}

func stringToInt(i []string) []int {
	f := make([]int, len(i))
	for n := range i {
		f[n], _ = strconv.Atoi(i[n])
	}
	return f
}
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