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High-signal articles on system design, algorithms, career strategy, and engineering craft. Written by engineers who've been there.
Merging two sorted linked lists looks simple — but most candidates fail on pointer bugs, space constraints, and missing edge cases. Here's how to nail it.
Learn how to solve the Longest Common Prefix problem the way interviewers expect — column-by-column thinking, clean code, and zero panic.
Master the 3Sum problem with Sort + Two Pointers, avoid the duplicate-skipping traps that trip up most candidates, and learn the pattern that unlocks a whole class of interview questions.
Learn how to crack the Next Permutation problem in interviews — from building the right intuition to avoiding the exact mistakes most candidates make under pressure.