Jul 11, 2022 · Jun 4, 2022 · Jun 4, 2022 · Jun 4, 2022 · Jun 4, 2022 · Jun 4, 2022
diff --git a/problems/0093.复原IP地址.md b/problems/0093.复原IP地址.md
Original file line number	Diff line number	Diff line change
Expand Up		@@ -659,6 +659,48 @@ func restoreIpAddresses(_ s: String) -> [String] {
		}
		```

	## Scala

	```scala
	object Solution {
	import scala.collection.mutable
	def restoreIpAddresses(s: String): List[String] = {
	var result = mutable.ListBuffer[String]()
	if (s.size < 4 \|\| s.length > 12) return result.toList
	var path = mutable.ListBuffer[String]()

	// 判断IP中的一个字段是否为正确的
	def isIP(sub: String): Boolean = {
	if (sub.size > 1 && sub(0) == '0') return false
	if (sub.toInt > 255) return false
	true
	}

	def backtracking(startIndex: Int): Unit = {
	if (startIndex >= s.size) {
	if (path.size == 4) {
	result.append(path.mkString(".")) // mkString方法可以把集合里的数据以指定字符串拼接
	return
	}
	return
	}
	// subString
	for (i <- startIndex until startIndex + 3 if i < s.size) {
	var subString = s.substring(startIndex, i + 1)
	if (isIP(subString)) { // 如果合法则进行下一轮
	path.append(subString)
	backtracking(i + 1)
	path = path.take(path.size - 1)
	}
	}
	}

	backtracking(0)
	result.toList
	}
	}
	```


		-----------------------
		<div align="center"><img src=https://code-thinking.cdn.bcebos.com/pics/01二维码一.jpg width=500> </img></div>