Practice Time: List Filters

 Lets say, we have a list of decorations, to print all decorations that start with the letter P, we can filter the decorations and return a list of the list of elements that match the condition under filter.

/** File:           Main.kt
 *  Programmer:      Nolverto Urias Obeso
 *  Creation Date:   06/13/2023
 *  Description:     Use the filters in a list
 */

fun main() {
    val decorations = listOf("rock","pagoda", "plastic plants","alligator","flowerpot")

    // Filter 1: Return all elements if the condition is true
    println(decorations.filter { true })    // Output: [rock, pagoda, plastic plants, alligator, flowerpot]

    // Filter 2: Return only the elements that have the initial character p
    println(decorations.filter { it[0] == 'p' })    // Output: [pagoda, plastic plants]

}

Output:

[rock, pagoda, plastic plants, alligator, flowerpot]
[pagoda, plastic plants]