自律システム：講義５課題を解くために書いた

J-Sys-HW5.kt

fun main(args: Array<String>) {
    println("walk = 4 : ${walk(4)}")
    println("walk = 5 : ${walk(5)}")
    println("bike = 4 : ${bike(4)}")
    println("bike = 5 : ${bike(5)}")
    println("bus = 4 : ${bus(4)}")
    println("bus = 5 : ${bus(5)}")
    println("car = 4 : ${car(4)}")
    println("car = 5 : ${car(5)}")
    println("accident = 4 : ${accident(4)}")
    println("accident = 5 : ${accident(5)}")
    println("get = 4 : ${get(4)}")
    println("get = 5 : ${get(5)}")
    println("fall = 4 : ${fall(4)}")
    println("fall = 5 : ${fall(5)}")
}

fun walk(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> 100.00
    2 -> 146.00
    3 -> 167.00
    else -> 100 + 0.5 * (0.6 * walk(k - 1) + 0.4 * bike(k - 1))
}

fun bike(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> 80.00
    2 -> 116.00
    3 -> 131.00
    else -> 80 + 0.5 * (0.6 * bike(k - 1) + 0.4 * bus(k - 1))
}

fun bus(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> 60.00
    2 -> 81.00
    3 -> 89.850
    else -> 60 + 0.5 * (0.7 * walk(k - 1) + 0.3 * car(k - 1))
}

fun car(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> 0.00
    2 -> 10.00
    3 -> 16.350
    else -> 0 + 0.5 * (0.9 * car(k - 1) + 0.1 * accident(k - 1))
}

fun accident(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> 200.00
    2 -> 237.00
    3 -> 252.250
    else -> 200 + 0.5 * (0.2 * walk(k - 1) + 0.3 * bike(k - 1) + 0.5 * bus(k - 1))
}

fun get(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> 10.00
    2 -> 10.50
    3 -> 10.75
    else -> 10 + 0.5 * (0.5 * get(k - 1) + 0.5 * fall(k - 1))
}

fun fall(k: Int): Double = when (k) {
    0 -> 0.00
    1 -> -8.00
    2 -> -7.50
    3 -> -7.25
    else -> -8 + 0.5 * (0.5 * fall(k - 1) + 0.5 * get(k - 1))
}