func isAnagram(s string, t string) bool {
if len(s) != len(t) {
return false
}
table := make(map[byte]int)
for i := 0; i < len(s); i++ {
table[s[i]]++
table[t[i]]--
}
for _, n := range table {
if n != 0 {
return false
}
}
return true
}