Problem 1203. Reference Index Number

Given a reference set R of elements (each unique but identical in type), and a list V of elements drawn from the set R, possibly with duplicates, return K such that R(K) == V. The elements of R may be numeric or string.

For example, refIndex(9:-1:5,[7 5 6 5]) should return [3 5 4 5].

Solve

Solution Stats

31.4% Correct | 68.6% Incorrect
Last Solution submitted on Dec 22, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers300

Suggested Problems

More from this Author11

Problem Tags

indexing

Community Treasure Hunt

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

Start Hunting!