896. Monotonic Array LeetCode Solution | Easy Approach

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Monotonic Array An array is monotonic if it is either monotone increasing or monotone decreasing.

An array nums is monotone increasing if for all i <= jnums[i] <= nums[j]. An array nums is monotone decreasing if for all i <= jnums[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

Monotonic Array Solutions

Time: O(n)
Space: O(n)

C++

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