Longest Strictly Increasing or Strictly Decreasing Subarray
<p>You are given an array of integers <code>nums</code>. Return <em>the length of the <strong>longest</strong> <span data-keyword="subarray-nonempty">subarray</span> of </em><code>nums</code><em> which is either <strong><span data-keyword="strictly-increasing-array">strictly increasing</span></strong> or <strong><span data-keyword="strictly-decreasing-array">strictly decreasing</span></strong></em>.</p>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<div class="example-block">
<p><strong>Input:</strong> <span class="example-io">nums = [1,4,3,3,2]</span></p>

<p><strong>Output:</strong> <span class="example-io">2</span></p>

<p><strong>Explanation:</strong></p>

<p>The strictly increasing subarrays of <code>nums</code> are <code>[1]</code>, <code>[2]</code>, <code>[3]</code>, <code>[3]</code>, <code>[4]</code>, and <code>[1,4]</code>.</p>

<p>The strictly decreasing subarrays of <code>nums</code> are <code>[1]</code>, <code>[2]</code>, <code>[3]</code>, <code>[3]</code>, <code>[4]</code>, <code>[3,2]</code>, and <code>[4,3]</code>.</p>

<p>Hence, we return <code>2</code>.</p>
</div>

<p><strong class="example">Example 2:</strong></p>

<div class="example-block">
<p><strong>Input:</strong> <span class="example-io">nums = [3,3,3,3]</span></p>

<p><strong>Output:</strong> <span class="example-io">1</span></p>

<p><strong>Explanation:</strong></p>

<p>The strictly increasing subarrays of <code>nums</code> are <code>[3]</code>, <code>[3]</code>, <code>[3]</code>, and <code>[3]</code>.</p>

<p>The strictly decreasing subarrays of <code>nums</code> are <code>[3]</code>, <code>[3]</code>, <code>[3]</code>, and <code>[3]</code>.</p>

<p>Hence, we return <code>1</code>.</p>
</div>

<p><strong class="example">Example 3:</strong></p>

<div class="example-block">
<p><strong>Input:</strong> <span class="example-io">nums = [3,2,1]</span></p>

<p><strong>Output:</strong> <span class="example-io">3</span></p>

<p><strong>Explanation:</strong></p>

<p>The strictly increasing subarrays of <code>nums</code> are <code>[3]</code>, <code>[2]</code>, and <code>[1]</code>.</p>

<p>The strictly decreasing subarrays of <code>nums</code> are <code>[3]</code>, <code>[2]</code>, <code>[1]</code>, <code>[3,2]</code>, <code>[2,1]</code>, and <code>[3,2,1]</code>.</p>

<p>Hence, we return <code>3</code>.</p>
</div>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>1 &lt;= nums.length &lt;= 50</code></li>
	<li><code>1 &lt;= nums[i] &lt;= 50</code></li>
</ul>
Array
class Solution:
    def longestMonotonicSubarray(self, nums: List[int]) -> int:
        ans = t = 1
        for i, x in enumerate(nums[1:]):
            if nums[i] < x:
                t += 1
                ans = max(ans, t)
            else:
                t = 1
        t = 1
        for i, x in enumerate(nums[1:]):
            if nums[i] > x:
                t += 1
                ans = max(ans, t)
            else:
                t = 1
        return ans
