Update Swift/581. Shortest Unsorted Continuous Subarray.swift

Author: liuchuo

Swift/581. Shortest Unsorted Continuous Subarray.swift

@@ -0,0 +1,14 @@
+// 581. Shortest Unsorted Continuous Subarray
+// 216 ms, 0%
+
+func findUnsortedSubarray(_ nums: [Int]) -> Int {
+    if nums.count < 2 { return 0 }
+    let sn = nums.sorted()
+    var p = -1, q = -1
+    for (i, v) in zip(sn, nums).enumerated() {
+        if v.0 != v.1 {
+            p == -1 ? (p = i) : (q = i + 1)
+        }
+    }
+    return q - p
+}