package main import ( "fmt" "os" "strings" "unicode" ) func singleSearch(exp []string, text string) []string { items := strings.Split(text, " ") var result []string for _, item := range items { for _, word := range exp { if strings.Contains(item, word) { result = append(result, item) } } } return result } func simpleSearch(runes []rune, text string) []string { exp := string(runes) var result []string if !strings.ContainsRune(exp, '|') { helper := []string{exp} result = append(singleSearch(helper, text)) } else { expWords := strings.Split(exp, "|") result = append(result, singleSearch(expWords, text)...) } return result } func brackets(regexp, text string) { if text == "" || regexp == "" { return } runes := []rune(regexp) if runes[0] == '(' && runes[len(runes)-1] == ')' { runes = runes[1 : len(runes)-1] result := simpleSearch(runes, text) for i, s := range result { if !unicode.IsLetter(rune(s[len(s)-1])) { s = s[0 : len(s)-1] } fmt.Printf("%d: %s\n", i+1, s) } } } func main() { if len(os.Args) == 3 { brackets(os.Args[1], os.Args[2]) } }