Create 0896-monotonic-array.swift

Author: drxlx

swift/0896-monotonic-array.swift

@@ -0,0 +1,19 @@
+/**
+ * Question Link: https://leetcode.com/problems/monotonic-array/
+ */
+
+ class Solution {
+    func isMonotonic(_ nums: [Int]) -> Bool {
+        var inc = true
+        var dec = true
+        for i in 0..<nums.count - 1 {
+            if nums[i] > nums[i + 1] {
+                inc = false
+            }
+            if nums[i] < nums[i + 1] {
+                dec = false
+            }
+        }
+        return inc || dec
+    }
+}