How to update elements in an array in Kotlin

How to update elements in an array in Kotlin.

Here's a detailed step-by-step tutorial on how to update elements in an array in Kotlin:

Create an array: To begin, you need to create an array in Kotlin. You can create an array using the arrayOf() function. Here's an example that creates an array of integers:
```
val numbers = arrayOf(1, 2, 3, 4, 5)
```
Accessing array elements: To update elements in an array, you need to access the specific element you want to modify. Array elements are accessed using their index, which starts from 0. For example, to access the element at index 2 in the numbers array, you would use numbers[2].
Updating array elements: Once you have accessed the element you want to update, you can assign a new value to it. Array elements in Kotlin are mutable, so you can directly assign a new value to an element. Here's an example that updates the element at index 2 in the numbers array:
```
numbers[2] = 10
```
After executing this line of code, the value at index 2 in the numbers array will be updated to 10.
Updating multiple array elements: If you want to update multiple elements in an array, you can use a loop or other iterative constructs. Here's an example that updates all elements in the numbers array to their squared values using a for loop:
```
for (i in numbers.indices) {
    numbers[i] = numbers[i] * numbers[i]
}
```
After executing this loop, all elements in the numbers array will be updated to their squared values.
Updating elements in a mutable list: Kotlin also provides a mutable list, MutableList, that allows you to update elements more conveniently. To create a mutable list, you can use the mutableListOf() function. Here's an example that creates a mutable list of strings:
```
val fruits = mutableListOf("apple", "banana", "cherry")
```
To update an element in a mutable list, you can use the set() function and provide the index of the element you want to update, along with the new value. Here's an example that updates the element at index 1 in the fruits list:
```
fruits.set(1, "orange")
```
After executing this line of code, the value at index 1 in the fruits list will be updated to "orange".
Conclusion: In this tutorial, you learned how to update elements in an array in Kotlin. You can update individual elements by accessing them using their index and assigning new values. For updating multiple elements, you can use loops or other iterative constructs. Kotlin also provides a mutable list, MutableList, that allows for more convenient element updates using the set() function.