Solution: Concatenation of Array
Understand how to solve the array concatenation problem by tracking each element's index and placing it twice in a result array. Learn to create a linear time and space solution that efficiently duplicates the input array without extra passes or utilities.
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...