Solution: Concatenation of Array
Explore how to effectively track indices to solve the concatenation of array problem. Understand how to construct an output array by placing each element twice using a single pass, optimizing both time and space complexity.
We'll cover the following...
We'll cover the following...
Statement
Given an integer array nums of length n, construct an array ans of length ans[i] == nums[i] and ans[i + n] == nums[i] for i n (0-indexed).
In other words, ans is formed by appending nums to itself.
Return the array ans.
Constraints:
nnums.length...