How to find the Element with Maximum Number of Occurrences in a List in Kotlin - Step by Step Examples

How to find the Element with Maximum Number of Occurrences in a List in Kotlin ?

Answer

To find the element with the maximum number of occurrences in a list in Kotlin, you can use the groupingBy and maxBy functions.


✐ Examples

1 Find Element with Maximum Occurrences

In this example,

  1. We create a list named list containing elements.
  2. We use the groupingBy function with eachCount to count the occurrences of each element in the list.
  3. We use the maxBy function to find the element with the maximum count.
  4. Finally, we print the element with maximum occurrences.

Kotlin Program

fun main() {
    val list = listOf("a", "b", "c", "a", "b", "a")
    val maxElement = list.groupingBy { it }.eachCount().maxBy { it.value }?.key
    println("Element with maximum occurrences: $maxElement")
}

Output

Element with maximum occurrences: a

2 Find Element with Maximum Occurrences in Integers

In this example,

  1. We create a list named numbers containing integers.
  2. We use the groupingBy function with eachCount to count the occurrences of each integer in the list.
  3. We use the maxBy function to find the integer with the maximum count.
  4. Finally, we print the integer with maximum occurrences.

Kotlin Program

fun main() {
    val numbers = listOf(1, 2, 3, 2, 1, 1, 3, 1)
    val maxNumber = numbers.groupingBy { it }.eachCount().maxBy { it.value }?.key
    println("Number with maximum occurrences: $maxNumber")
}

Output

Number with maximum occurrences: 1

Summary

In this tutorial, we learned How to find the Element with Maximum Number of Occurrences in a List in Kotlin language with well detailed examples.


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