diff --git a/problems/0046.全排列.md b/problems/0046.全排列.md
index 9f93564c..06e1550a 100644
--- a/problems/0046.全排列.md
+++ b/problems/0046.全排列.md
@@ -456,6 +456,36 @@ func permute(_ nums: [Int]) -> [[Int]] {
}
```
+### Scala
+
+```scala
+object Solution {
+ import scala.collection.mutable
+ def permute(nums: Array[Int]): List[List[Int]] = {
+ var result = mutable.ListBuffer[List[Int]]()
+ var path = mutable.ListBuffer[Int]()
+
+ def backtracking(used: Array[Boolean]): Unit = {
+ if (path.size == nums.size) {
+ // 如果path的长度和nums相等,那么可以添加到结果集
+ result.append(path.toList)
+ return
+ }
+ // 添加循环守卫,只有当当前数字没有用过的情况下才进入回溯
+ for (i <- nums.indices if used(i) == false) {
+ used(i) = true
+ path.append(nums(i))
+ backtracking(used) // 回溯
+ path.remove(path.size - 1)
+ used(i) = false
+ }
+ }
+
+ backtracking(new Array[Boolean](nums.size)) // 调用方法
+ result.toList // 最终返回结果集的List形式
+ }
+}
+```
-----------------------
diff --git a/problems/0047.全排列II.md b/problems/0047.全排列II.md
index f5f9e440..88680c8c 100644
--- a/problems/0047.全排列II.md
+++ b/problems/0047.全排列II.md
@@ -422,5 +422,43 @@ int** permuteUnique(int* nums, int numsSize, int* returnSize, int** returnColumn
}
```
+### Scala
+
+```scala
+object Solution {
+ import scala.collection.mutable
+ def permuteUnique(nums: Array[Int]): List[List[Int]] = {
+ var result = mutable.ListBuffer[List[Int]]()
+ var path = mutable.ListBuffer[Int]()
+ var num = nums.sorted // 首先对数据进行排序
+
+ def backtracking(used: Array[Boolean]): Unit = {
+ if (path.size == num.size) {
+ // 如果path的size等于num了,那么可以添加到结果集
+ result.append(path.toList)
+ return
+ }
+ // 循环守卫,当前元素没被使用过就进入循环体
+ for (i <- num.indices if used(i) == false) {
+ // 当前索引为0,不存在和前一个数字相等可以进入回溯
+ // 当前索引值和上一个索引不相等,可以回溯
+ // 前一个索引对应的值没有被选,可以回溯
+ // 因为Scala没有continue,只能将逻辑反过来写
+ if (i == 0 || (i > 0 && num(i) != num(i - 1)) || used(i-1) == false) {
+ used(i) = true
+ path.append(num(i))
+ backtracking(used)
+ path.remove(path.size - 1)
+ used(i) = false
+ }
+ }
+ }
+
+ backtracking(new Array[Boolean](nums.length))
+ result.toList
+ }
+}
+```
+
-----------------------