class Test205 {
    class Solution {
        fun isIsomorphic(s: String, t: String): Boolean {
            val f = mutableMapOf<Char,Char>()
            val fp = mutableMapOf<Char,Char>()
            for (i in s.indices){
                if (f.containsKey(s[i]) || fp.containsKey(t[i])){
                    if (t[i] != f[s[i]] || s[i] != fp[t[i]]){
                        return false
                    }
                }else{
                    f[s[i]] = t[i]
                    fp[t[i]] = s[i]
                }
            }
            return true
        }
    }
    fun test(){
        println(Solution().isIsomorphic("badc","baba"))

    }
}