// Найти анаграмму S в тексте Text

func findAnagrams(_ text: String, _ s: String) -> [Int] {
    let text: [String] = Array(text).map{String($0)}
    let s: [String] = Array(s).map{String($0)}

    if s.count > text.count {
        return []
    }

    var result: [Int] = []
    var diff: [String: Int] = [:]

    for i in 0..<s.count {
        diff[s[i], default: 0] += 1
    }
    var l = 0
    var r = 0

    while r < text.count {

        if diff[ text[r] ] ?? 0 > 0 {

            diff[ text[r] ]! -= 1
            if r - l + 1 == s.count {
                result.append(l)
            }
            r += 1
        } else if l == r {
            l += 1
            r += 1
        } else {
            diff[ text[l] ]! += 1
            l += 1
        }
    }
    return result
}

findAnagrams("baeidbaooo", "ab")