1.jetpack compose 2.Application context most frquent elemet from the array top most kth frequest occuring element rcompose solid Difference between val and var in Kotlin. What are data classes in Kotlin, and when to use them? Explain sealed classes vs enums. What is a coroutine? How is it different from threads? How does suspend function work internally? What is the difference between launch and async in coroutines? How to handle exceptions in coroutines?