Solution.go

func wordPatternMatch(pattern string, s string) bool {
	m, n := len(pattern), len(s)
	vis := map[string]bool{}
	d := map[byte]string{}
	var dfs func(i, j int) bool
	dfs = func(i, j int) bool {
		if i == m && j == n {
			return true
		}
		if i == m || j == n || m-i > n-j {
			return false
		}
		c := pattern[i]
		for k := j + 1; k <= n; k++ {
			t := s[j:k]
			if v, ok := d[c]; ok && v == t {
				if dfs(i+1, k) {
					return true
				}
			}
			if _, ok := d[c]; !ok && !vis[t] {
				d[c] = t
				vis[t] = true
				if dfs(i+1, k) {
					return true
				}
				delete(d, c)
				vis[t] = false
			}
		}
		return false
	}
	return dfs(0, 0)
}