Implement Rand10() Using Rand7() - Practice Coding | SlaveCode
0
0123456789
0
0123456789
:
0
0123456789
0
0123456789
470. Implement Rand10() Using Rand7()
Medium
30 Points
Math
Rejection Sampling
Randomized
Probability and Statistics
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().
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
470. Implement Rand10() Using Rand7()
Medium
30 Points
Math
Rejection Sampling
Randomized
Probability and Statistics
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().