Strictly Increasing or Strictly Decreasing

Given a list of integers nums, return whether the list is strictly increasing or strictly decreasing.

Constraints

• n ≤ 100,000 where n is the length of nums

https://binarysearch.com/problems/Strictly-Increasing-or-Strictly-Decreasing

Examples

Example 1

Input

• nums = [1, 2, 3, 4, 5, 5]

Output

• answer = False

Explanation

Since there’s two duplicate 5 this is not strictly increasing.

Example 2

Input

• nums = [5, 4, 3, 2, 1]

Output

• answer = True

Explanation

This is strictly decreasing.

Example 3

Input

• nums = [1, 2, 3, 4, 5]

Output

• answer = True

Explanation

This is strictly increasing.

Solution