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g2201_2300.s2293_min_max_game.readme.md Maven / Gradle / Ivy

2293\. Min Max Game

Easy

You are given a **0-indexed** integer array `nums` whose length is a power of `2`.

Apply the following algorithm on `nums`:

1.  Let `n` be the length of `nums`. If `n == 1`, **end** the process. Otherwise, **create** a new **0-indexed** integer array `newNums` of length `n / 2`.
2.  For every **even** index `i` where `0 <= i < n / 2`, **assign** the value of `newNums[i]` as `min(nums[2 * i], nums[2 * i + 1])`.
3.  For every **odd** index `i` where `0 <= i < n / 2`, **assign** the value of `newNums[i]` as `max(nums[2 * i], nums[2 * i + 1])`.
4.  **Replace** the array `nums` with `newNums`.
5.  **Repeat** the entire process starting from step 1.

Return _the last number that remains in_ `nums` _after applying the algorithm._

**Example 1:**

![](https://assets.leetcode.com/uploads/2022/04/13/example1drawio-1.png)

**Input:** nums = [1,3,5,2,4,8,2,2]

**Output:** 1

**Explanation:** The following arrays are the results of applying the algorithm repeatedly.

First: nums = [1,5,4,2]

Second: nums = [1,4]

Third: nums = [1]

1 is the last remaining number, so we return 1. 

**Example 2:**

**Input:** nums = [3]

**Output:** 3

**Explanation:** 3 is already the last remaining number, so we return 3. 

**Constraints:**

*   `1 <= nums.length <= 1024`
*   1 <= nums[i] <= 109
*   `nums.length` is a power of `2`.