添加 0518.零钱兑换II.md Scala版本

Author: wzqwtt

problems/0518.零钱兑换II.md

@@ -289,7 +289,22 @@ function change(amount: number, coins: number[]): number {
 };
 ```
 
-
+Scala:
+
+```scala
+object Solution {
+  def change(amount: Int, coins: Array[Int]): Int = {
+    var dp = new Array[Int](amount + 1)
+    dp(0) = 1
+    for (i <- 0 until coins.length) {
+      for (j <- coins(i) to amount) {
+        dp(j) += dp(j - coins(i))
+      }
+    }
+    dp(amount)
+  }
+}
+```
 
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