Palindrome - Hindi, Chinese, French, Spanish

Recently I realized that the code I shared for Palindrome here has a few limitations. It supports only ASCII character sets (i.e. mainly English alphabet & numbers). It won't support other language palindromes.

See the following palindrome examples from some other major languages:

• été (French)
•  दामाद (Hindi)
• सरस (Hindi)
• 不得不  (Chinese)
• abañaba (Spanish)
• анилина (Russian)
• カジカ (Japanese)

If you input any of the above in our previous code you won't get a correct output. The characters in above examples such as é द 不  etc. are non ASCII and hence our previous code doesn't work.

Check the above palindromes with this new code in action.

Let us see how to overcome this limitation.

rune: Type rune is basically int32. It generally indicates a Unicode code point.

See the following revised code that works perfectly fine even with non-ASCII characters.
P.S. Reference: The code is adapted from The Go Programming Language (Donovan & Kernighan).

	package main
	import (
	"fmt"
	"unicode"
	)
	func main() {
	var ip string
	fmt.Println("Enter any word")
	fmt.Scanf("%s\n", &ip)
	fmt.Println(IsPalindrome(ip))
	}
	func IsPalindrome(s string) string {
	var letters []rune
	//var str string
	for _, r := range s {
	if unicode.IsLetter(r) {
	letters = append(letters, unicode.ToLower(r))
	}
	}
	for i := range letters {
	if letters[i] != letters[len(letters)-1-i] {
	return "No! It's not a palindrome"
	}
	}
	return "Yes! It's a Palindrome"
	}

view raw PalindromeAdv.go hosted with ❤ by GitHub