统计字符个数-golang实现

题目

输入一行字符，分别统计出其中英文字母、空格、数字和其它字符的个数。

代码实现

package main

import (
    "fmt"
    "bufio"
    "os"
)

func count(str string) (wordCount, spaceCount, numberCount, otherCount int) {
    t := []rune(str)
    for _, v := range t {
        switch {
            case v >= 'a' && v <= 'z':            fallthrough            case v >= 'A' && v <= 'Z':            wordCount++            case v == ' ':            spaceCount++            case v >= '0' && v <= '9':            numberCount++            default:            otherCount++        }    }    return}func main() {    reader := bufio.NewReader(os.Stdin)    result, _ , err := reader.ReadLine()    if err != nil {        fmt.Println("read from console err :", err)    }    wc, sc, nc, oc := count(string(result))    fmt.Printf(" wordCount: %d\n spaceCount: %d\n numberCount: %d\n otherCount: %d\n", wc, sc, nc, oc)}
            fallthrough
            case v >= 'A' && v <= 'Z':            wordCount++            case v == ' ':            spaceCount++            case v >= '0' && v <= '9':            numberCount++            default:            otherCount++        }    }    return}func main() {    reader := bufio.NewReader(os.Stdin)    result, _ , err := reader.ReadLine()    if err != nil {        fmt.Println("read from console err :", err)    }    wc, sc, nc, oc := count(string(result))    fmt.Printf(" wordCount: %d\n spaceCount: %d\n numberCount: %d\n otherCount: %d\n", wc, sc, nc, oc)}
            wordCount++
            case v == ' ':
            spaceCount++
            case v >= '0' && v <= '9':            numberCount++            default:            otherCount++        }    }    return}func main() {    reader := bufio.NewReader(os.Stdin)    result, _ , err := reader.ReadLine()    if err != nil {        fmt.Println("read from console err :", err)    }    wc, sc, nc, oc := count(string(result))    fmt.Printf(" wordCount: %d\n spaceCount: %d\n numberCount: %d\n otherCount: %d\n", wc, sc, nc, oc)}
            numberCount++
            default:
            otherCount++
        }
    }
    return
}

func main() {
    reader := bufio.NewReader(os.Stdin)
    result, _ , err := reader.ReadLine()
    if err != nil {
        fmt.Println("read from console err :", err)
    }

    wc, sc, nc, oc := count(string(result))
    fmt.Printf(" wordCount: %d\n spaceCount: %d\n numberCount: %d\n otherCount: %d\n", wc, sc, nc, oc)
}