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KOTLIN - ITERATING ARRAY

In the previous tutorial we have seen how to iterate an array. Now, let us see the easiest way to iterate an array.

We will create an 'Array' with five values, 'Mohan', 'John', 'Paul', 'Kriti' and 'Salim'.

fun main() {

    var arr = arrayOf("Mohan", "John", "Paul", "Kriti", "Salim")
        
    for (str in arr) {
        println(str)
    }
}

Output :

Mohan
John
Paul
Kriti
Salim

So, in the above code we have created a 'Array' and initialised to the variable 'arr'.

var arr = arrayOf{"Mohan", "John", "Paul", "Kriti", "Salim"}

In the below way the values are positioned in the Array,

So, as we can see the elements are positioned as '0', '1', '2', '3' and '4'.

Then we have the 'for' loop.

for (str in arr)

That takes the values of the array 'arr' one by one and puts in the variable 'str'.

Let us look at all the iterations of 'for' loop.

for (str in arr) {
    println(str)
}

So, in the first Iteration, the first value i.e. 'Mohan' is taken from the first location and put into the variable 'str'.

And the print statement,

println(str)

Prints the value of 'str'.

Mohan

Then in the second Iteration, the second value i.e. 'John' is taken from the second location and put into the variable 'str'.

And the print statement,

println(str)

Prints the value of 'str'.

Mohan
John

Similarly, in 5 iterations all the values are printed.

Mohan
John
Paul
Kriti
Salim