Question

How to iterate over a map in Kotlin

Answer 1

fun main() {
    val map = mapOf("key1" to "value1", "key2" to "value2", "key3" to "value3")

	for ((key, value) in map) {
    	println("Key: $key, Value: $value")
	}
}


 
 
/*
run:

Key: key1, Value: value1
Key: key2, Value: value2
Key: key3, Value: value3
 
*/

 

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Answer 2

fun main() {
    val map = mapOf("key1" to "value1", "key2" to "value2", "key3" to "value3")

	map.forEach { (key, value) ->
    	println("Key: $key, Value: $value")
	}
}

 
 
/*
run:

Key: key1, Value: value1
Key: key2, Value: value2
Key: key3, Value: value3
 
*/

 

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Answer 3

fun main() {
    val map = mapOf("key1" to "value1", "key2" to "value2", "key3" to "value3")

	for (entry in map.entries) {
    	println("Key: ${entry.key}, Value: ${entry.value}")
	}
}

 
 
/*
run:

Key: key1, Value: value1
Key: key2, Value: value2
Key: key3, Value: value3
 
*/

 

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