func isAlienSorted(words []string, order string) bool {
c := [26]int{}
for i := 0; i < len(order); i++ {
c[order[i]-'a'] = i
}
for i := 0; i < len(words) - 1; i++ {
min := len(words[i])
if len(words[i+1]) < min {
min = len(words[i+1])
}
var j int
for j = 0; j < min; j++ {
if c[words[i][j]-'a'] > c[words[i+1][j]-'a'] {
return false
} else if c[words[i][j]-'a'] < c[words[i+1][j]-'a'] {
break
}
}
if j == min && len(words[i]) > len(words[i+1]) {
return false
}
}
return true
}