添加 背包理论基础01背包-2.md Scala版本

problems/背包理论基础01背包-2.md

@@ -375,7 +375,33 @@ console.log(testWeightBagProblem(weight, value, size));
 
 ```
 
+### Scala
 
+```scala
+object Solution {
+  // 滚动数组
+  def test_1_wei_bag_problem(): Unit = {
+    var weight = Array[Int](1, 3, 4)
+    var value = Array[Int](15, 20, 30)
+    var baseweight = 4
+
+    // dp数组
+    var dp = new Array[Int](baseweight + 1)
+
+    // 遍历
+    for (i <- 0 until weight.length; j <- baseweight to weight(i) by -1) {
+      dp(j) = math.max(dp(j), dp(j - weight(i)) + value(i))
+    }
+
+    // 打印数组
+    println("[" + dp.mkString(",") + "]")
+  }
+
+  def main(args: Array[String]): Unit = {
+    test_1_wei_bag_problem()
+  }
+}
+```
 
 -----------------------
 <div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>