subarray-with-elements-greater-than-varying-threshold

Subarray With Elements Greater Than Varying Threshold

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validSubarraySize

You are given an integer array <code>nums</code> and an integer <code>threshold</code>.

Find any subarray of <code>nums</code> of length <code>k</code> such that every element in the subarray is greater than <code>threshold / k</code>.

Return the size of any such subarray. If there is no such subarray, return <code>-1</code>.

A subarray is a contiguous non-empty sequence of elements within an array.

&nbsp;
Example 1:

<pre>
Input: nums = [1,3,4,3,1], threshold = 6
Output: 3
Explanation: The subarray [3,4,3] has a size of 3, and every element is greater than 6 / 3 = 2.
Note that this is the only valid subarray.
</pre>

Example 2:

<pre>
Input: nums = [6,5,6,5,8], threshold = 7
Output: 1
Explanation: The subarray [8] has a size of 1, and 8 &gt; 7 / 1 = 7. So 1 is returned.
Note that the subarray [6,5] has a size of 2, and every element is greater than 7 / 2 = 3.5. 
Similarly, the subarrays [6,5,6], [6,5,6,5], [6,5,6,5,8] also satisfy the given conditions.
Therefore, 2, 3, 4, or 5 may also be returned.</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= nums.length &lt;= 105</code></li>
	<li><code>1 &lt;= nums[i], threshold &lt;= 109</code></li>
</ul>

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