Palindrome string

January 11, 2023

Name: Moch Lutfi
Twitter: @kaptenupi

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

main.go

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
}

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