Loading the journal
Loading the journal
Sequence Check / DifferenceSolved Oct 27, 2025
Problem
Given an array of numbers, determine if the numbers form an Arithmetic Progression (AP). An AP is a sequence where the difference between the consecutive terms is constant.
Reading the solution first feels like progress, but it makes the next similar problem — and the interview version — much harder, because you skipped the part where you figure it out. Give it an honest 20–30 minutes. Stuck? Re-read the pattern, watch the concept video, or try the brute force first.
Hidden: approach · solution code