How to insert an object in an ArrayList at a specific position

Question

Suppose I have an ArrayList of objects of size n. Now I want to insert an another object at specific position, let\'s say at index position k (is greater than 0 and less tha

Answer 1

You must handle ArrayIndexOutOfBounds by yourself when adding to a certain position.

For convenience, you may use this extension function in Kotlin

/**
 * Adds an [element] to index [index] or to the end of the List in case [index] is out of bounds
 */
fun <T> MutableList<T>.insert(index: Int, element: T) {
    if (index <= size) {
        add(index, element)
    } else {
        add(element)
    }
}