How to Solve 2 Keys Keyboard Leetcode Problem - Interview Coder Guide
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How to Solve 2 Keys Keyboard Problem

Master the 2 Keys Keyboard LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.

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Medium#650
LeetCode Problem

2 Keys Keyboard

There is only one character 'A' on the screen of a notepad. You can perform one of two operations on this notepad for each step: Copy All: You can copy all the characters present on the screen (a part...

MathDynamic Programming

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Problem Breakdown

Understanding the 2 Keys Keyboard Problem

Let's break down this LeetCode problem and understand what makes it challenging in interview settings.

Problem Statement

There is only one character 'A' on the screen of a notepad. You can perform one of two operations on this notepad for each step: Copy All: You can copy all the characters present on the screen (a partial copy is not allowed). Paste: You can paste the characters which are copied last time. Given an integer n, return the minimum number of operations to get the character 'A' exactly n times on the screen.

MediumProblem #650
LeetCode

2 Keys Keyboard

Related Topics
MathDynamic Programming
How Interview Coder Helps

Get real-time assistance for 2 Keys Keyboard problems during coding interviews. Interview Coder provides instant solutions and explanations.

Examples

Example 1
INPUT
n = 3
OUTPUT
3
EXPLANATION

Initially, we have one character 'A'. In step 1, we use Copy All operation. In step 2, we use Paste operation to get 'AA'. In step 3, we use Paste operation to get 'AAA'.

Example 2
INPUT
n = 1
OUTPUT
0

Constraints

1 <= n <= 1000

How Interview Coder Helps with Leetcode Problems

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Run compatibility test before interviews
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Enable advanced screen capture options
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Platform Compatibility

Zoom
Supported
Google Meet
Supported
HackerRank
Supported
CodeSignal
Supported
CoderPad
Supported
Teams
Supported

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Frequently Asked Questions

Common questions about solving 2 Keys Keyboard and using Interview Coder during coding interviews.

Interview Coder generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.

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