Largest Positive Integer That Exists With Its Negative
Given an integer array nums that does not contain any zeros, find the largest positive integer k such that -k also exists in the array.
Given an integer array nums that does not contain any zeros, find the largest positive integer k such that -k also exists in the array.
Return the positive integer k. If there is no such integer, return -1.
Example 1
Input: nums = [-1,2,-3,3]
Output: 3
Explanation: 3 is the only valid k we can find in the array.
Example 2
Input: nums = [-1,10,6,7,-7,1]
Output: 7
Explanation: Both 1 and 7 have their corresponding negative values in the array. 7 has a larger value.
Example 3
Input: nums = [-10,8,6,7,-2,-3]
Output: -1
Explanation: There is no a single valid k, we return -1.
Constraints
- 1 <= nums.length <= 1000
- -1000 <= nums[i] <= 1000
- nums[i] != 0
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