Golang : Individual and total number of words counter example
Problem:
You need to count the unique instances of words and the total number of words in a given string. For counting each unique occurrences of a word, you prefer to strip the word of any delimiter such as exclamation or question marks and return the result as a map.
Solution:
This code example below is self-explanatory. Happy coding!
package main
import (
"fmt"
"strings"
)
const delim = "?!.;,*"
func isDelim(c string) bool {
if strings.Contains(delim, c) {
return true
}
return false
}
func cleanDelimiter(input string) string {
size := len(input)
temp := ""
var prevChar string
for i := 0; i < size; i++ {
str := string(input[i]) // convert to string for easier operation
if (str == " " && prevChar != " ") || !isDelim(str) {
temp += str
prevChar = str
} else if prevChar != " " && isDelim(str) {
temp += ""
}
}
return temp
}
func SingleWordCount(s string, uniqueSensitive bool) map[string]int {
strSlice := strings.Fields(cleanDelimiter(s))
result := make(map[string]int)
if uniqueSensitive {
for _, str := range strSlice {
result[str]++
}
} else {
for _, str := range strSlice {
result[strings.ToLower(str)]++
}
}
return result
}
func TotalWordCount(s string) int {
strSlice := strings.Fields(cleanDelimiter(s))
return len(strSlice)
}
func main() {
str := "Hello fri3nd, you're looking good today!"
fmt.Println("======================================================")
fmt.Println(str)
fmt.Println("Count by individual word : ", SingleWordCount(str, true))
fmt.Println("Total words : ", TotalWordCount(str))
str = "Hello hello HELLo hellO"
fmt.Println("======================================================")
fmt.Println(str)
fmt.Println("Count by individual word : ", SingleWordCount(str, true))
fmt.Println("Total words : ", TotalWordCount(str))
// TREAT lower and upper case as the same
str = "Hello? hello!! HELLo?? hellO!"
fmt.Println("======================================================")
fmt.Println(str)
fmt.Println("Count by individual word : ", SingleWordCount(str, false)) // set to false
fmt.Println("Total words : ", TotalWordCount(str))
}
Output:
======================================================
Hello fri3nd, you're looking good today!
Count by individual word : map[today:1 Hello:1 fri3nd:1 you're:1 looking:1 good:1]
Total words : 6
======================================================
Hello hello HELLo hellO
Count by individual word : map[Hello:1 hello:1 HELLo:1 hellO:1]
Total words : 4
======================================================
Hello hello HELLo hellO
Count by individual word : map[hello:4]
Total words : 4
See also : Golang : Count number of runes in string
By Adam Ng
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