290. 单词规律

题目链接：https://leetcode-cn.com/problems/word-pattern/

执行用时：4 ms, 在所有 Swift 提交中击败了85.71%的用户
内存消耗：13.6 MB, 在所有 Swift 提交中击败了95.24%的用户

class Solution {
    func wordPattern(_ pattern: String, _ s: String) -> Bool {
        var strArr = s.split(separator: " ")
        var dict = [String: Character]()
        var pat = Array(pattern)
        let n = strArr.count
        if n != pat.count { return false}
        for i in 0 ..< n {
            if let v = dict[String(strArr[i])] {
                if v == pat[i] {
                    continue
                }else{
                    return false
                }
            }else{
                dict[String(strArr[i])] = pat[i]
            }
        }
        if Set(dict.values).count != dict.values.count { return false}
        return true
    }
}