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Java Solution for LeetCode algorithm problems, continually updating
896\. Monotonic Array
Easy
An array is **monotonic** if it is either monotone increasing or monotone decreasing.
An array `nums` is monotone increasing if for all `i <= j`, `nums[i] <= nums[j]`. An array `nums` is monotone decreasing if for all `i <= j`, `nums[i] >= nums[j]`.
Given an integer array `nums`, return `true` _if the given array is monotonic, or_ `false` _otherwise_.
**Example 1:**
**Input:** nums = [1,2,2,3]
**Output:** true
**Example 2:**
**Input:** nums = [6,5,4,4]
**Output:** true
**Example 3:**
**Input:** nums = [1,3,2]
**Output:** false
**Constraints:**
* 1 <= nums.length <= 105
* -105 <= nums[i] <= 105