Interview-Prep on Algorithms in 60 Days

The Best FAANG Interview Prep Resources in 2026 (Free + Paid)

Mon, 06 Jul 2026 11:00:00 +0500

There are more coding interview resources in 2026 than there are interview questions. That’s the problem. Most candidates don’t fail because they picked a bad resource — they fail because they bounced between six good ones and finished none.

This is a tiered, opinionated guide: what’s genuinely worth your time, what’s worth your money, and what’s worth skipping. We run a prep site ourselves, so take our self-mention with the grain of salt it deserves — we’ve marked it clearly and we’ll tell you exactly where competitors are better.

Binary Search: Not Just for Sorted Arrays

Mon, 06 Jul 2026 10:00:00 +0500

Ask most candidates what binary search is for, and you’ll get the same answer: “finding an element in a sorted array.” That answer is technically correct and strategically wrong — and it’s why binary search interview problems have such a brutal failure rate.

Here’s the reframe that changes everything: binary search is a technique for shrinking a search space in half whenever you can answer one yes/no question about the middle. The sorted array is just the most famous search space. Once you see it this way, problems like “minimum eating speed” and “split an array to minimize the largest sum” stop looking like exotic puzzles and start looking like the same 15 lines of code.

Recursion for Interviews: Think Before You Code

Mon, 06 Jul 2026 09:00:00 +0500

Recursion problems have a peculiar failure mode in interviews. Candidates don’t run out of knowledge — they run out of working memory. They start tracing calls: “so f(4) calls f(3), which calls f(2), which calls f(1)…” and three levels deep, the whiteboard is a spiderweb and the interviewer is checking the clock.

Here’s the uncomfortable truth: if you’re mentally simulating the call stack, you’re doing it wrong. The entire point of recursion is that you don’t trace it. This post gives you the mental model that makes tracing unnecessary, then applies it to five real interview problems in Python.