Discover MakerZone

MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn more

Discover what MATLAB® can do for your career.

Opportunities for recent engineering grads.

Apply Today

New to MATLAB?

Problem 815. Persistent Usage

Created by Richard Zapor

This Challenge is to implement the Matlab Persistent variable capability.

Given a sequence of Calls to a function return the current input summed with the prior function call input.

On the first call return the current input.

Input: a (value)

Output: b where b=a+"previous a"


    Input  Sequence: 1 2 -3 3 5
    Output Sequence: 1 3 -1 0 8

Related Challenge is Global.


Problem Group

Solution Statistics

23 correct solutions 39 incorrect solutions
Last solution submitted on May 19, 2015

Problem Comments