Problem 2990. Replace every 3rd element in a vector with 4

Created by Yaz Majeed
Appears in Cody Problems in Japanese

Like (2)

Difficulty:Rate

Solve Later
Add To GroupÃ‚

x is a vector of undetermined length

You are to replace every 3rd element with the number 4, example:

x = [11 23 34 43 2 31 6 34 5 45 26 7 78];

output = [11 23 4 43 2 4 6 34 4 45 26 4 78];

Make sure the code accounts for varying vector lengths

Solve

Solution Stats

425 Solutions
253 Solvers

Last Solution submitted on Mar 03, 2025

Last 200 Solutions

Problem Comments

1 Comment

1 Comment

Guillaume on 10 Feb 2015

In view of the recent spate of trivial problems with no test suite to speak of, thanks for making the effort of providing a proper test suite and a slightly less trivial problem.

Solution Comments

Show comments

Problem Recent Solvers253

Problem Tags

Community Treasure Hunt

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

Start Hunting!

Problem 2990. Replace every 3rd element in a vector with 4

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers253

Suggested Problems

More from this Author28

Problem Tags

Community Treasure Hunt

Problem 2990. Replace every 3rd element in a vector with 4

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers253

Suggested Problems

More from this Author28

Problem Tags

Community Treasure Hunt

Players