Nanamare

class RxOperatorTest {

    private val compositeDisposable = CompositeDisposable()

    private val testScheduler = TestScheduler()

    @BeforeEach
    fun init() {
        RxJavaPlugins.setComputationSchedulerHandler { testScheduler }
    }

Nanamare

public class DynamicProgramming {

    static int[][] map = {
            {1, 1, 1, 1, 1},
            {1, 1, 0, 0, 1},
            {1, 1, 1, 1, 1},
            {1, 1, 1, 0, 1},
            {0, 0, 1, 1, 1}
    };

Nanamare

fun solution(a: Int, b: Int): String {
    val months = listOf(0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30)
    val dayName = listOf("THU", "FRI", "SAT", "SUN", "MON", "TUE", "WED")
    val day = months.subList(0, a).fold(0) { acc, number -> acc + number } + b
    return dayName[day % 7]
}

Nanamare

fun main() {
    val list = listOf(1, 2, 3, 4, 5, 6, 7, 8)
    // 1, 2, 6, 3, 4, 5, 7, 8
    val results= leftRotate(2, 6, list.toMutableList())
    results.forEach {
        println(it)
    }
}

fun rightRotate(start: Int, end: Int,  list: MutableList<Int>): List<Int> {

Nanamare

fun main() {

    val queue = Queue()

    queue.insert(1)
    queue.insert(2)
    queue.insert(3)
    queue.insert(4)
    queue.insert(5)
    queue.insert(6)

Nanamare

fun main() {

    val linkedList = LinkedList()
    linkedList.addNodeAtLast(444)
    linkedList.addNodeAtLast(555)
    linkedList.addNodeAtFront(333)
    linkedList.addNodeAtFront(222)
    linkedList.addNodeAtFront(111)
    linkedList.addNodeAtLast(666)
    linkedList.addNodeAtLast(777)

Nanamare

fun main() {
    println(fibonacci(80))
}

const val LIMIT = 1000
val mem = Array(LIMIT) {0L}

/**
 *  memoization
 *  n >= 3

Nanamare

fun main() {
    println(factorialTailRec(12, 1))
}


fun factorialTailRec(number: Int, accumulator: Int ): Int {
    return if (number == 0) {
        accumulator
    } else {
        factorialTailRec(number - 1, number * accumulator)

Nanamare

fun main() {
    coin()
}


fun coin() {

    val bills = arrayOf(1, 2, 5, 10, 20 ,50)
    var count  = 0
    val money = 100

Nanamare

fun main() {
    println(binomial(60, 15)) // 60 개중 15개를 뽑는 방법
}

const val n = 60
const val r = 15

val matrix = Array(n) { Array(r) { 0 } }

/**