Palindrome string

Palindrome string

January 11, 2023

Moch Lutfi
Moch Lutfi

A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward (ignoring spaces, punctuation, and capitalization). Let's take an example string racecar:

  • “racecar” is a palindrome, because its last two characters are the same.
  • simple check is if we reverse string the result is still same
  • so we just loop string, then compare string from first index (s[i]) and last index (s[len(s)-1-i]) until reach the middle position

Here the sample implementation


package main
import "fmt"
func isPalindrome(s string) bool {
// to ignore case, string converted to lower case
s = strings.ToLower(s)
for i := 0; i < len(s)/2; i++ {
if s[i] != s[len(s)-1-i] {
return false
return true
func main() {
fmt.Println(isPalindrome("racecar")) // prints true
fmt.Println(isPalindrome("hello")) // prints false