Problem 44324. Rewrite setdiff to account for non-unique values

Setdiff(a,b) is a function that will remove all values of b from a. Sometimes, you need this function to do a little bit extra, though. Write a newer version of setdiff that will take into account numbers appearing multiple times in a. For example:

a=[8 7 6 5 4 3 2 1 1]; b=[1 3 4 5 6 7];

In this example, setdiff(a,b) would return [2 8], since only 2 and 8 are not included in a. However, there are two "1" values in a, and only one "1" in b, so new_setdiff should return [1 2 8]. Your output vector should be sorted from low to high.

You can assume that there are no Inf or NaN in either vector, and that no values will appear in b more times than will appear in a.

Solution Stats

52.46% Correct | 47.54% Incorrect
Last Solution submitted on Jan 14, 2023

Solution Comments

Show comments

Problem Recent Solvers28

Suggested Problems

More from this Author80

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!