Here, we will write a program to check alphabetic characters in strings in go. Given below, you can find algorithm and program.
I have written program to check alphabetic characters in strings in go using regular expression. Regex make life easier :p
Program to check if all the characters are alphabetic in string.
Input: HelloGo
Ouput: true
Input: Hello12go
Ouput: false
Input: hello go
Output: false
Code:
package main
import (
"fmt"
)
func check_alphabet_char_in_str(str string) bool {
for _, char := range str {
if ((char < 'a' || char > 'z') &&
(char < 'A' || char > 'Z')) {
return false
}
}
return true
}
func main() {
res := check_alphabet_char_in_str("HelloGo")
fmt.Println(res)
res = check_alphabet_char_in_str("Hello12go")
fmt.Println(res)
res = check_alphabet_char_in_str("1234")
fmt.Println(res)
}Output:
true false false
Using regular expression:
package main
import (
"fmt"
"regexp"
)
func main() {
reg_fun := regexp.MustCompile(`^[a-zA-Z]+$`).MatchString
res := reg_fun("HelloGo")
fmt.Println(res)
res = reg_fun("Hello 12 Go")
fmt.Println(res)
res = reg_fun("1234")
fmt.Println(res)
res = reg_fun("Hello12Go")
fmt.Println(res)
}
Output:
true
false
false
false
Program to check if any character is alphabetic in string.
Input: Hello Go
Ouput: true
Input: Hello 12 go
Ouput: true
Input: 1234
Output: false
Code:
package main
import (
"fmt"
)
func check_alphabet_char_in_str(str string) bool {
for _, char := range str {
if ((char >= 'a' && char <= 'z') ||
(char >= 'A' && char <= 'Z')) {
return true
}
}
return false
}
func main() {
res := check_alphabet_char_in_str("Hello Go")
fmt.Println(res)
res = check_alphabet_char_in_str("Hello 12 go")
fmt.Println(res)
res = check_alphabet_char_in_str("1234")
fmt.Println(res)
}Output:
true
true
false
Program to check alphanumeric character in string.
Code:
package main
import (
"fmt"
)
func is_str_alpha_numeric(str string) bool {
for _, char := range str {
if ((char >= 'a' && char <= 'z') ||
(char >= 'A' && char <= 'Z') ||
(char >= '0' && char <= '9')) {
return true
}
}
return false
}
func main() {
res := is_str_alpha_numeric("HelloGo")
fmt.Println(res)
res = is_str_alpha_numeric("Hello 12 Go")
fmt.Println(res)
res = is_str_alpha_numeric("@#$%")
fmt.Println(res)
res = is_str_alpha_numeric("Hello#@Go")
fmt.Println(res)
}Output:
true
true
false
true
Using regular expression:
package main
import (
"fmt"
"regexp"
)
func main() {
reg_fun := regexp.MustCompile(`^[a-zA-Z0-9_]*$`).MatchString
res := reg_fun("HelloGo")
fmt.Println(res)
res = reg_fun("Hello 12 Go")
fmt.Println(res)
res = reg_fun("1234")
fmt.Println(res)
res = reg_fun("Hello12Go")
fmt.Println(res)
res = reg_fun("Hello#@Go")
fmt.Println(res)
}
Output:
true
false
true
true
false
To learn more about golang. Please follow given below link.
https://www.techieindoor.com/go-lang/
References:
https://golang.org/doc/ https://golang.org/pkg/