Generate Binary Numbers from 1 to N
Problem Statement
Given an integer N, generate all binary numbers from 1 to N and return them as a list of strings.
Examples
Example 1
- Input: N = 2
- Output: ["1", "10"]
- Explanation: The binary representation of 1 is "1", and the binary representation of 2 is "10".
Example 2
- Input: N = 3
- Output: ["1", "10", "11"]
- Explanation: The binary representation of 1 is "1", the binary representation of 2 is "10", and the binary representation of 3 is "11".
Example 3
- Input: N = 5
- Output: ["1", "10", "11", "100", "101"]
- Explanation: These are the binary representations of the numbers from 1 to 5.
Try it yourself
Try solving this question here:
🤖 Don't fully get this? Learn it with Claude
Stuck on Generate Binary Numbers from 1 to N? Open Claude, copy a block below, and it'll teach you this exact concept — visually and interactively.
🎨 Explain it visually
Build the mental picture, not memorization.
I just read a lesson on **Generate Binary Numbers from 1 to N** (DSA) and want to truly understand it. Explain Generate Binary Numbers from 1 to N from first principles using ONE vivid real-world analogy and a visual mental model — draw it as ASCII art or a clear step-by-step diagram — with a concrete example using real numbers. Then ask me one question to check I got the mental picture, and wait for my reply. If you're unsure or a claim isn't standard, say so and reason from first principles instead of guessing.
🤔 Walk me through it (interactive)
Socratic — adapts to where you're stuck.
Teach me **Generate Binary Numbers from 1 to N** interactively. Ask me ONE guiding question at a time, wait for my answer, and adapt to my confusion — build the idea with me step by step instead of explaining it all at once. If you're unsure or a claim isn't standard, say so and reason from first principles instead of guessing.
🧪 Quiz me & fix my gaps
Active recall exposes what you missed.
Quiz me on **Generate Binary Numbers from 1 to N** with 5 questions, easy to tricky, ONE at a time. Tell me if each answer is right; at the end, explain clearly what I got wrong and why. If you're unsure or a claim isn't standard, say so and reason from first principles instead of guessing.
🧠 Make it stick
Intuition + hook + flashcards for long-term memory.
Help me remember **Generate Binary Numbers from 1 to N** for the long term: give the one-sentence intuition, a memorable hook/mnemonic, a tiny worked example, and 3 active-recall flashcards (Q -> A). If you're unsure or a claim isn't standard, say so and reason from first principles instead of guessing.