euler4.go

package main
import(
  "fmt"
  "strconv"
  "sort"
  "strings"
)

func main() {
  palindromes := []int{}

  for i := 100; i <= 999; i++ {
    for j := 100; j <= 999; j++ {
      product := i * j
      str := strconv.FormatInt(int64(product), 10)
      if isPalindrome(str) {
        palindromes = append(palindromes, product)
      }
    }
  }

  sort.Ints(palindromes)
  fmt.Println(palindromes[ len(palindromes) - 1 ])
}

func isPalindrome(str string) bool {
  chars := strings.Split(str, "")
  for i := 0; i < len(chars); i++ {
    if chars[i] != chars[ len(chars) - i - 1] {
      return false
    }
  }
  return true
}