2970. Count the Number of Incremovable Subarrays I

Author: sergeyleschev

2501-3000/2970. Count the Number of Incremovable Subarrays I.swift

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+class Solution {
+
+    // Solution by Sergey Leschev
+    // 2970. Count the Number of Incremovable Subarrays I
+
+    func incremovableSubarrayCount(_ nums: [Int]) -> Int {
+        var ans = 0
+
+        for i in 0..<nums.count {
+            for j in i..<nums.count {
+                var last = -1
+                var flag = true
+
+                for k in 0..<nums.count {
+                    if k >= i && k <= j {
+                        continue
+                    }
+
+                    if last >= nums[k] {
+                        flag = false
+                        break
+                    }
+
+                    last = nums[k]
+                }
+
+                if flag {
+                    ans += 1
+                }
+            }
+        }
+
+        return ans
+    }
+}