How to sort an array and search an element inside it? : Binary Search : Kotlin

In this article, we will learn to write a kotlin program to sort an array and to search element inside it. To accomplish this task, we will use binarySearch() and sort() methods.

Source Code:

import java.util.Arrays

private fun printArray(message: String, array: IntArray) {
    print(message)

    for (i in array.indices) {
        if (i != 0) {
            print(", ")
        }
        print(array[i])
    }
    println()
}

fun main(args: Array<String>) {
    val array = intArrayOf(2, 5, -2, 1, -3, 3, -1, -5, -4, 4)
    Arrays.sort(array)
    printArray("Sorted array is : ", array)
    val index = Arrays.binarySearch(array, 2)
    println("Element 2 found @ $index")
}

Output:

Sorted array is : -5, -4, -3, -2, -1, 1, 2, 3, 4, 5
Element 2 found @ 6

Description:

In the above program to sort an array in kotlin, we have used a user-defined method printArray() to sort and print the array. To sort an array we have used java.util.arrays.sort() method. To find an element in the sorted array, we have used java.util.Arrays.binarySearch(int[], int) method.