code_projects_kotlin/STEP1_Basics/5_Recursion/main.kt

fun rmin(ll: Array<Int>, i: Int? = null): Int {
    if (i == null) {
        return rmin(ll, ll.size - 1)
    }
    else {
        val cur = ll[i]
        if (i > 0) {
            val next: Int = rmin(ll, i - 1)
            if (next < cur) {
                return next
            }
            else {
                return cur
            }
        }
        else {
            return cur
        }
    }
}

fun main() {
    val ll: Array<Int> = Array(10) {0 * 10}
    // Gen random numbers
    for (i in 0..9) {
        ll[i] = (0..100).random()
    }

    var bll: String = ""
    var first: Boolean = true
    for (i in 0..9) {
        if (first) {
            bll += "${ll[i]}"
            first = false
        }
        else {
            bll += ", ${ll[i]}"
        }
    }

    // Print out
    println("""
        Original list:
        $bll
        
        Min: ${rmin(ll)}
    """.trimIndent())
}