2149. Rearrange Array Elements by Sign
Problem Statement
You are given a 0-indexed integer array nums
of even length consisting of an equal number of positive and negative integers.
You should rearrange the elements of nums
such that the modified array follows the given conditions:
Every consecutive pair of integers have opposite signs.
For all integers with the same sign, the order in which they were present in
nums
is preserved.The rearranged array begins with a positive integer.
Return the modified array after rearranging the elements to satisfy the aforementioned conditions.
Example 1:
Example 2:
Constraints:
2 <= nums.length <= 2 * 105
nums.length
is even1 <= |nums[i]| <= 105
nums
consists of equal number of positive and negative integers.
Intuition
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Approach 2:
Approach 3:
Approach 4:
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