Squares of a Sorted Array
EasyArraysTwo Pointers
Solve this the way you would in the interview: out loud, on a timer, with an AI interviewer asking follow-ups while you code. You get a scored report at the end.
Practice this as a mock interviewFree to start, no account neededProblem
Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order.
Examples
Input: nums = [-4,-1,0,3,10]
Output: [0,1,9,16,100]
After squaring, the array becomes [16,1,0,9,100]. After sorting, it becomes [0,1,9,16,100].
Input: nums = [-7,-3,2,3,11]
Output: [4,9,9,49,121]
Constraints
- 1 <= nums.length <= 10^4
- -10^4 <= nums[i] <= 10^4
- nums is sorted in non-decreasing order.
What the interviewer grades
A correct solution is one of five scores. The report also grades problem understanding (did you clarify inputs and edge cases before coding), problem solving, communication while you work, code quality, and testing. See a sample report, or read up on the pattern in the lessons.