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Java-based LeetCode algorithm problem solutions, regularly updated

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3133\. Minimum Array End

Medium

You are given two integers `n` and `x`. You have to construct an array of **positive** integers `nums` of size `n` where for every `0 <= i < n - 1`, `nums[i + 1]` is **greater than** `nums[i]`, and the result of the bitwise `AND` operation between all elements of `nums` is `x`.

Return the **minimum** possible value of `nums[n - 1]`.

**Example 1:**

**Input:** n = 3, x = 4

**Output:** 6

**Explanation:**

`nums` can be `[4,5,6]` and its last element is 6.

**Example 2:**

**Input:** n = 2, x = 7

**Output:** 15

**Explanation:**

`nums` can be `[7,15]` and its last element is 15.

**Constraints:**

*   1 <= n, x <= 10⁸