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Text processing/1: Difference between revisions
→{{header|Go}}: gofmt; simplify error handling; use bufio.Scanner to simplify and remove long line error; use a func literal to reset badRun instead of repeating code (although it was only 4 lines)
(→{{header|Java}}: added Java) |
(→{{header|Go}}: gofmt; simplify error handling; use bufio.Scanner to simplify and remove long line error; use a func literal to reset badRun instead of repeating code (although it was only 4 lines)) |
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Line 1,289:
import (
)
const (
filename = "readings.txt"
readings = 24 // per line
fields = readings*2 + 1 // per line
)
func main() {
}
defer file.Close()
var (
badRun, maxRun int
badDate, maxDate string
fileSum
fileAccept int
)
endBadRun := func() {
if badRun > maxRun {
maxRun = badRun
maxDate = badDate
}
badRun = 0
}
s := bufio.NewScanner(file)
for s.Scan() {
f := strings.Fields(s.Text())
if len(f) != fields {
log.Fatal("unexpected format,", len(f), "fields.")
}
var accept int
var sum float64
for i := 1; i < fields; i
flag, err := strconv.Atoi(f[i+1])
if err != nil {
log.Fatal(err)
}
if flag <= 0 { // value is bad
if badRun++; badRun == 1 {
badDate = f[0]
}
} else { // value is good
endBadRun()
value, err := strconv.ParseFloat(f[i], 64)
if err != nil {
log.Fatal(err)
}
sum += value
accept++
}
}
fmt.Printf("Line: %s Reject %2d Accept: %2d Line_tot:%9.3f",
f[0], readings-accept, accept, sum)
fmt.Printf(" Line_avg:%8.3f\n", sum/float64(accept))
} else {
fmt.Println()
}
fileSum += sum
fileAccept += accept
}
if err := s.Err(); err != nil {
log.Fatal(err)
}
endBadRun()
fmt.Println("\nFile =", filename)
fmt.Printf("Total = %.3f\n", fileSum)
fmt.Println("Readings = ", fileAccept)
if fileAccept > 0 {
fmt.Printf("Average = %.3f\n", fileSum/float64(fileAccept))
}
if maxRun == 0 {
fmt.Println("\nAll data valid.")
} else {
fmt.Printf("\nMax data gap = %d, beginning on line %s.\n",
maxRun, maxDate)
}
}</lang>
{{out}}
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