70 lines
1.3 KiB
Go
70 lines
1.3 KiB
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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"io"
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"os"
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"strconv"
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"strings"
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)
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/*
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* Complete the 'plusMinus' function below.
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*
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* The function accepts INTEGER_ARRAY arr as parameter.
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*/
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func plusMinus(arr []int32) {
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n := float64(len(arr))
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var pos, neg, zero float64
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for _, v := range arr {
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switch {
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case v == 0:
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zero++
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case v > 0:
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pos++
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case v < 0:
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neg++
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}
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}
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fmt.Printf("%0.6f\n%0.6f\n%0.6f\n", pos/n, neg/n, zero/n)
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}
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func main() {
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reader := bufio.NewReaderSize(os.Stdin, 16 * 1024 * 1024)
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nTemp, err := strconv.ParseInt(strings.TrimSpace(readLine(reader)), 10, 64)
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checkError(err)
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n := int32(nTemp)
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arrTemp := strings.Split(strings.TrimSpace(readLine(reader)), " ")
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var arr []int32
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for i := 0; i < int(n); i++ {
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arrItemTemp, err := strconv.ParseInt(arrTemp[i], 10, 64)
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checkError(err)
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arrItem := int32(arrItemTemp)
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arr = append(arr, arrItem)
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}
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plusMinus(arr)
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}
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func readLine(reader *bufio.Reader) string {
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str, _, err := reader.ReadLine()
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if err == io.EOF {
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return ""
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}
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return strings.TrimRight(string(str), "\r\n")
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}
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func checkError(err error) {
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if err != nil {
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panic(err)
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}
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}
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