kotlin for loop example

Example 1: kotlin for

for (i in 1..5) print(i) 			// "12345"
for (i in 5 downTo 1) print(i) 		// "54321"
for (i in 0 until 5) { 				// "01234"
     println(i)
}
for(i in 0 until list.size()){
    println(i)
}

Example 2: for loop kotlin

val array = arrayOf(1, 3, 9)
for (item in array) {
    //loops items
}
for (index in 0..array.size - 1) {
	//loops all indices
}
for (index in 0 untill array.size) {
    //loops all indices
}
for (index in array.indices) {
    //loops all indices (performs just as well as two examples above)
}

Example 3: kotlin loop

val school = arrayOf("shark", "salmon", "minnow")
for (element in school) {
    print(element + " ")
}
-> shark salmon minnow

for ((index, element) in school.withIndex()) {
    println("Item at $index is $element\n")
}
-> Item at 0 is shark
Item at 1 is salmon
Item at 2 is minnow

Example 4: kotlin simple for loop

val names = listOf("Jack", "John", "Tim")
for(name in names){
	println(name)
}

Example 5: for loop kotlin

for (x in 0..10) println(x)

Example 6: kotlin for

val list = listOf("A", "B", "C")
for (element in list) {
 println(element)
}