How to Solve Implement Rand10() Using Rand7() Leetcode Problem - Interview Coder Guide
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How to Solve Implement Rand10() Using Rand7() Problem

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Medium#903
LeetCode Problem

Implement Rand10() Using Rand7()

Given the API rand7() that generates a uniform random integer in the range [1, 7], write a function rand10() that generates a uniform random integer in the range [1, 10]. You can only call the API ran...

MathRejection SamplingRandomized+1 more

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Problem Breakdown

Understanding the Implement Rand10() Using Rand7() Problem

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Problem Statement

Given the API rand7() that generates a uniform random integer in the range [1, 7], write a function rand10() that generates a uniform random integer in the range [1, 10]. You can only call the API rand7(), and you shouldn't call any other API. Please do not use a language's built-in random API. Each test case will have one internal argument n, the number of times that your implemented function rand10() will be called while testing. Note that this is not an argument passed to rand10().

MediumProblem #903
LeetCode

Implement Rand10() Using Rand7()

Related Topics
MathRejection SamplingRandomizedProbability and Statistics
How Interview Coder Helps

Get real-time assistance for Implement Rand10() Using Rand7() problems during coding interviews. Interview Coder provides instant solutions and explanations.

Examples

Example 1
INPUT
n = 1
OUTPUT
[2]
Example 2
INPUT
n = 2
OUTPUT
[2,8]
Example 3
INPUT
n = 3
OUTPUT
[3,8,10]

Constraints

1 <= n <= 105
Follow up:
What is the expected value for the number of calls to rand7() function?
Could you minimize the number of calls to rand7()?

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