package q2273

var buf = [26]int{}
var bufZ = [26]int{}

func isAnagram(a, b string) bool {
	if len(a) != len(b) {
		return false
	}
	seen := buf[:]
	copy(seen, bufZ[:])
	for i := range len(a) {
		c := a[i] - 'a'
		seen[c]++
	}
	for i := range len(b) {
		c := b[i] - 'a'
		seen[c]--
		if seen[c] < 0 {
			return false
		}
	}
	return true
}

func removeAnagrams(words []string) []string {
	p := 0
	for i := 1; i < len(words); i++ {
		if !isAnagram(words[p], words[i]) {
			p++
			words[p] = words[i]
		}
	}
	return words[:p+1]
}

var _ = removeAnagrams