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429 B

package breakpalindrome
func breakPalindrome(palindrome string) string {
if len(palindrome) <= 1 {
return ""
}
result := []rune(palindrome)
for i, r := range result {
if r != 'a' {
result[i] = 'a'
break
}
}
for _, r := range result {
if r != 'a' {
return string(result)
}
}
return palindrome[:len(palindrome)-1] + "b"
}
func Break(palindrome string) string {
return breakPalindrome(palindrome)
}