Transform Array to All Equal Elements

Description

You are given an integer array nums of size n containing only 1 and -1, and an integer k.

You can perform the following operation at most k times:

-

Choose an index i (0 <= i < n - 1), and multiply both nums[i] and nums[i + 1] by -1.



Note that you can choose the same index i` more than once in different operations.

Return true if it is possible to make all elements of the array equal after at most k operations, and false otherwise.