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STEP1_Basics/5_Recursion/main.kt

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+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())
+}