How to Solve Transform Array to All Equal Elements Problem
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Transform Array to All Equal Elements
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...
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Understanding the Transform Array to All Equal Elements Problem
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Problem Statement
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.
Transform Array to All Equal Elements
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Examples
nums = [1,-1,1,-1,1], k = 3trueWe can make all elements in the array equal in 2 operations as follows: Choose index i = 1, and multiply both nums[1] and nums[2] by -1. Now nums = [1,1,-1,-1,1]. Choose index i = 2, and multiply both nums[2] and nums[3] by -1. Now nums = [1,1,1,1,1].
nums = [-1,-1,-1,1,1,1], k = 5falseIt is not possible to make all array elements equal in at most 5 operations.
Constraints
1 <= n == nums.length <= 105nums[i] is either -1 or 1.1 <= k <= nHow Interview Coder Helps with Leetcode Problems
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