Given two integers x and n, with 
, find the sum of all positive integers below x, that are multiples of any of the integers from 2 up to n.
, find the sum of all positive integers below x, that are multiples of any of the integers from 2 up to n.For example, for 
and 
, the sum of the multiples of 2, 3, 4 or 5 is:
and , the sum of the multiples of 2, 3, 4 or 5 is:
.Solution Stats
Problem Comments
2 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers4
Suggested Problems
-
1072 Solvers
-
Switch matrix to a column vector
378 Solvers
-
Add a row of zeros on top of a matrix
269 Solvers
-
179 Solvers
-
Matlab Basics II - Unit Conversion
182 Solvers
More from this Author116
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Hi David,
I avoided exceeding 'flintmax', minimized multiplication, division and conditional statements. For small n's, like in test 7, | only used a simple sieving algorithm. I also checked my solution with Elixir, and Java and I still get the same result for test 7.
I initially did a sieving algorithm, but it was not efficient enough for large n. I did not consider splitting with two different algorithms.