lcs

suspend fun ReThis.lcs(key1: String, key2: String): String
suspend fun ReThis.lcs(key1: String, key2: String, mode: LcsMode.LEN = LcsMode.LEN): Long
suspend fun ReThis.lcs(key1: String, key2: String, mode: LcsMode.IDX, len: MinMatchLen? = null, withMatchLen: Boolean = false): LcsResult