<Kotlin: Most efficient way of comparing two list ...

# stackoverflow

[user]

Kotlin: Most efficient way of comparing two list objects using - Webflux
I have two lists each with 20,000 objects, the lists are two separate data types that I would like to compare.
My two list objects types are shown below:
List 1 type:
data class FastUser(
val fastUserId: String?,
val fUserName: String?,
)

List 2 type:
data class SlowUser(
val slowUserId: String?,
val sUserName: String?,
)

And finally my Result Type:
data class Result(
val slowUser: SlowUser,
val fastUser: FastUser,
val similarityScore: Int, // Can be between 0 - 1 only accepting >= 0.5
)...