Given a matrix x with n rows and m columns, return a matrix y with n rows and 2m columns, such that every row in x is sorted from low to high and then from high to low.

Example:

x = 9  2  8  1
    5  4  9  8
    8  9  6  9

y = 1  2  8  9  9  8  2  1
    4  5  8  9  9  8  5  4
    6  8  9  9  9  9  8  6
Solve

Solution Stats

1060 Solutions

329 Solvers

Last Solution submitted on Feb 11, 2026

Last 200 Solutions

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers329

Hong Son Matthew Bolyard Kathleen qiushui

Suggested Problems

More from this Author25

Problem Tags

Community Treasure Hunt

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

Start Hunting!