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Quick facts

• Difficulty: MEDIUM
• Problem: Swap Nodes in Pairs
• Main tags: Linked List, Recursion, Iteration, Pointer Manipulation

What the problem is really asking

The input is the head of a singly linked list. Every adjacent pair of nodes must be swapped:

• 1 -> 2 -> 3 -> 4 becomes 2 -> 1 -> 4 -> 3
• 1 -> 2 -> 3 becomes 2 -> 1 -> 3

The important constraint is that node values cannot be copied around. The solution has to rewire the list itself.

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Quick facts

• Difficulty: MEDIUM
• Problem: Find the Duplicate Number
• Main tags: Array, Two Pointers, Binary Search

What the problem is really asking

The input has length n + 1, but every value is guaranteed to be in the range 1 through n.

That guarantee means one value must appear more than once. So the duplicate is not the hard part. The hard part is satisfying the interview constraints at the same time:

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Quick facts

• Difficulty: MEDIUM
• Problem: Evaluate Division
• Main tags: Graph, DFS, BFS, Union-Find

What the problem is really asking

Each equation like a / b = 2.0 gives a multiplicative relationship between two variables.

The query x / y asks:

can the known equations connect x to y, and if they can, what ratio do those equations imply?

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Quick facts

• Difficulty: MEDIUM
• Problem: Pow(x, n)
• Main tags: Math, Recursion

What the problem is really asking

The task is to compute x^n, but the real constraint is not the arithmetic itself. It is that n can be very large, including negative values, so a straightforward loop that multiplies x by itself |n| times is too slow.

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A bubble with a ragged edge

This article argues that the Voyager spacecraft have done something more interesting than simply becoming the first human-made objects to enter interstellar space. They have exposed how incomplete scientists’ picture of the sun’s outer domain really was. For decades the heliosphere, the vast bubble carved out by the solar wind and the sun’s magnetic field, was easy to draw in a diagram and hard to observe directly. The Voyagers changed that. By surviving long after their original grand tour of the outer planets, they turned into the only functioning probes to sample the boundary between the sun’s influence and the wider galaxy from the inside out.

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What happened

Techmeme surfaced this April 17, 2026 story, and the original article is TechCrunch’s Anthropic launches Claude Design, a new product for creating quick visuals.

Anthropic says Claude Design is an experimental product for turning prompts into presentation slides, one-pagers, prototypes, and other lightweight visual artifacts. The target user is not a full-time designer. It is the founder, product manager, operator, or teammate who has an idea and needs something more concrete than a wall of text, but faster than opening a full design tool from scratch.

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What this article is about

This summary covers The Economist’s March 28th, 2026 Europe article listed in the contents as The internet in Russia and headlined on the page as Spring offensive.

The article argues that Russia’s leadership is trying to turn internet access into another instrument of wartime control. Security services have begun blocking mobile internet and moving against Telegram not because Russia feels secure, but because the regime feels exposed. In trying to seal the country off from outside influence, the Kremlin is disrupting daily life in its biggest cities and alarming parts of its own elite.

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What the article is really about

Kevin Brenden’s piece begins with a launch accident in Valle de Bravo, Mexico, but its deeper subject is the false sense of security that insurance can create. After feeling rushed on a crowded launch and choosing a bad cycle, he tumbles just below takeoff and breaks his arm. What follows is not merely an injury report. The article becomes a close look at what happens when carefully purchased travel coverage collides with the realities of foreign clinics, cash payments, improvised paperwork, and remote claims handling.

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Jury finds that Ticketmaster and Live Nation had an anticompetitive monopoly over big concert venues (r/news)

• Humble-Fish-7070: Yeah no fucking shit. Wake me up when I don’t get hit with \$37.95 in bullshit fees
• EggNo289: So it only took 30 years to figure this out?

South Korea jails American YouTuber for public nuisance (r/news)

• Scalar_Mikeman: Good. Give him 5 years and then deport him and ban him from ever entering Korea again
• Absurdist02: He messed with a statue for comfort women in south Korea? That topic still causes diplomatic problems. What a dumbass.

Treasury Secretary Scott Bessent is preparing banks to collect citizenship data (r/news)

• Doctor_Saved: This sounds like a logistical nightmare. Do people get lock out of their account if they don’t comply? What if there are suddenly bank runs? Also, a lot of citizens don’t have passports or their birth certificate. What happens with them?
• fleurgirl123: That’s gonna crash the economy, when suddenly all non-citizens have to go underground and do everything with cash

How would you feel about a new law that forces every company to pay their CEO no more than 20x what their lowest-paid employee makes? (r/AskReddit)

• Deweydc18: CEO pay is kind of a capitalism red herring. The real problem isn’t the CEO making 100 times their lowest paid employee, it’s the equity holders who are worth 1,000,000 times their lowest paid employee’s annual salary
• brokenmessiah: I don’t care what my boss gets paid, I just wanna be content with the amount of money I’m getting paid.

What is something that sounds 100% false but is actually 100% true? (r/AskReddit)

• frizbeeguy1980: The only member of ZZ Top that didn’t have a beard was their drummer. His name? Frank Beard.
• vikivikw: There were still woolly mammoths alive when the pyramids were being built🫢

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Snap laying off 16% of full-time staff (r/cscareerquestions)

• EntropyRX: Because AI, sure thing LOL. Man, did you look at Snap as a company? It’s over with or without AI
• a_velis: No amount of AI will magically move people back to Snapchat. Unless they are building another product.

Management keeps pushing AI harder, but nobody wants to hear that review is now the bottleneck (r/cscareerquestions)

• Crazypyro: The worst thing is I have to spend more time reviewing a PR than the fucking person who implemented the feature spent thinking about it.
• rwilcox: The most annoying thing about the AI crowd is that _any_ push back, or even just “woh hold up” gets you labeled as anti-AI.

Has anyone else’s job become insuferable with everyone trying to jam AI into everything? (r/cscareerquestions)

• crazy0ne: Yes. It makes having conversations about why AI is not making something go “faster” sound like I’m incompetent when the answer is bad architecture still has consequences, AI or not.
• BigRedThread: Yes, i’m a senior swe and my job is literally just claude context management at this point, with ai pods trying to give us as much slop work as we can handle to accelerate delivery and “10x output”. Software engineering is kind of ass now

Founding Engineer at AI startup or MAANG (Blind)

• Mesk: Your equity/ vesting / terms do not reflect founding engineer terms. 18 month cliff is not common 0.15 is too less of an equity. Cash is slightly higher. If you want to learn and grow, startups are better. You will learn more than just coding that will serve you well. You should talk about better vesting terms and more equity though. If the goal is maximizing expected income, MAANG is unbeatable. You will be taking a proven path of maximizing TC in the rat race with much higher expected outcome.
• luadipid: 0.15% equity is worthless, jump ship to MAANG, skill up, make connections, and if you want to pursue startups again use your skills and network and get a founder position (whole number percentage equity)

AI Startup Offer, Early Engineer, L6 => Director (Blind)

• koool: Go to the startup. Nothing to lose but time
• tvzM62: Having done exactly this before, I would never do it again. I regret leaving an amazing career path for a startup gamble and easily gave up ~\$1mm by doing it. If you think you can build something special, found your own startup. 2% of a company is nothing, you’re working to make your founders rich.