count-elements-with-strictly-smaller-and-greater-elements

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Algorithms

Given an integer array <code>nums</code>, return the number of elements that have both a strictly smaller and a strictly greater element appear in <code>nums</code>.

&nbsp;
Example 1:

<pre>
Input: nums = [11,7,2,15]
Output: 2
Explanation: The element 7 has the element 2 strictly smaller than it and the element 11 strictly greater than it.
Element 11 has element 7 strictly smaller than it and element 15 strictly greater than it.
In total there are 2 elements having both a strictly smaller and a strictly greater element appear in <code>nums</code>.
</pre>

Example 2:

<pre>
Input: nums = [-3,3,3,90]
Output: 2
Explanation: The element 3 has the element -3 strictly smaller than it and the element 90 strictly greater than it.
Since there are two elements with the value 3, in total there are 2 elements having both a strictly smaller and a strictly greater element appear in <code>nums</code>.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= nums.length &lt;= 100</code></li>
	<li><code>-105 &lt;= nums[i] &lt;= 105</code></li>
</ul>

countElements

Count Elements With Strictly Smaller and Greater Elements 

Find Smallest Letter Greater Than Target

find-smallest-letter-greater-than-target

寻找比目标字母大的最小字母

Array

Counting

Sorting

给你一个整数数组 <code>nums</code> ，统计并返回在 <code>nums</code> 中同时至少具有一个严格较小元素和一个严格较大元素的元素数目。

&nbsp;

示例 1：

<pre>
输入：nums = [11,7,2,15]
输出：2
解释：元素 7 ：严格较小元素是元素 2 ，严格较大元素是元素 11 。
元素 11 ：严格较小元素是元素 7 ，严格较大元素是元素 15 。
总计有 2 个元素都满足在 nums 中同时存在一个严格较小元素和一个严格较大元素。
</pre>

示例 2：

<pre>
输入：nums = [-3,3,3,90]
输出：2
解释：元素 3 ：严格较小元素是元素 -3 ，严格较大元素是元素 90 。
由于有两个元素的值为 3 ，总计有 2 个元素都满足在 nums 中同时存在一个严格较小元素和一个严格较大元素。
</pre>

&nbsp;

提示：

<ul>
	<li><code>1 &lt;= nums.length &lt;= 100</code></li>
	<li><code>-105 &lt;= nums[i] &lt;= 105</code></li>
</ul>