Problem 6. Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, starting with the first.
Examples:
Input x = [1 3 2 4 3 5]
Output y is [1 2 3]
Input x = [5 9 3 2 2 0 -1]
Output y is [5 3 2 -1]
Solution Stats
Problem Comments
-
41 Comments
Show
38 older comments
Muhammad
on 26 Aug 2024
Below is my code but it is failing the test 6 and 7. I tried inputting x=randi(100,10,1) and x=primes(20) in the scratchpad and the code works fine, outputing the right answer. There seems to be a problem with the evaluation of the answers.
function y = everyOther(x)
y = [];
for i = 1:2:length(x);
y(end+1) = x(i);
end
Dyuman Joshi
on 29 Aug 2024
@Muhammad, take a deeper look at what the test cases are testing for.
Ivo
on 27 Mar 2025 at 8:50
y = x(1:2:end);
does the trick. :)
Solution Comments
Show commentsGroup

Introduction to MATLAB
- 23 Problems
- 8417 Finishers
- Add two numbers
- Find the sum of all the numbers of the input vector
- Maximum value in a matrix
- Return area of square
- Finding Perfect Squares
- Make the vector [1 2 3 4 5 6 7 8 9 10]
- Generate a vector like 1,2,2,3,3,3,4,4,4,4
- Triangle Numbers
- Length of the hypotenuse
- Select every other element of a vector
- Reverse the vector
- Column Removal
- Swap the input arguments
- Swap the first and last columns
- Check if number exists in vector
- Determine whether a vector is monotonically increasing
- Getting the indices from a vector
- Create times-tables
- Return the first and last characters of a character array
- Number of 1s in a binary string
- Make a random, non-repeating vector.
- Magic is simple (for beginners)
- Sum all integers from 1 to 2^n
Problem Recent Solvers34053
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!