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String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
<http://www.mathworks.com/help/matlab/characters-and-strings.html String array> and cell array are two types of containers for s...

3 months ago

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Cell Counting: How Many Draws?
You are given a cell array containing information about a number of soccer games. Each cell contains one of the following: * ...

3 months ago

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Remove element(s) from cell array
You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty....

3 months ago

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Split a string into chunks of specified length
Given a string and a vector of integers, break the string into chunks whose lengths are given by the elements of the vector. Ex...

3 months ago

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Spot the outlier
All points except for one lie on a line. Which one is the outlier? Example: You are given a list of x-y pairs in a column ...

3 months ago

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Find a subset that divides the vector into equal halves
Given a vector x, return the indices to elements that will sum to exactly half of the sum of all elements. Example: Inpu...

3 months ago

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Squirrel cage induction motor characteristics using SIMSCAPE
Hi @Maya, I thoroughly reviewed your block diagram. You have two issues: *Issue #1:* Your R2024b model won't run in R2025b...

3 months ago | 0

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How long is the longest prime diagonal?
Stanislaw Ulam once observed that if the counting numbers are arranged in a spiral, the prime numbers contained in it form a sur...

3 months ago

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Find the biggest empty box
You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You wan...

3 months ago

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Find state names that start with the letter N
Given a list of US states, remove all the states that start with the letter N. If s1 = 'Alabama Montana Nebraska Vermont Ne...

3 months ago

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It dseon't mettar waht oedrr the lrettes in a wrod are.
An internet meme from 2003 (read more here) asserted that readers are relatively insensitive to letter order in words, so long a...

3 months ago

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Mechanics 1
I thought I would make a mechanics problem for all those physics lovers out there. Imagine two solid, rigid spheres B1 and B...

3 months ago

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How Far Can You Throw Something?
As you probably learned in your high school physics class, throwing an object at a 45 degree angle will give you the maximum ran...

3 months ago

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Calculate the height of an object dropped from the sky
Assume that an object is dropped from 1000 meters above the surface of the earth at time t=0. The object is dropped such that t...

3 months ago

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Why am I getting a near 0 current in the flyback converter?
Hi @Carlos, I was having technical difficulties while replying to your post. Please see attached.

3 months ago | 0

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jogging?
Imagine x-y coordinate system and you are at the origin and your partner is on the x-axis at some small distance (d) away from y...

3 months ago

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Determine if a four bar mechanism is of Grashof type
A four bar mechanism is composed of four links. if s is the smallest link, l the longest and p,q are the length of the other lin...

3 months ago

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Find the jerk
No, it's not the author of this problem... Jerk is the rate of change in acceleration over time of an object. So, if given t...

3 months ago

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Why am I getting a near 0 current in the flyback converter?
Hi @Carlos, I went through your entire thread carefully, including all your updates and the changes you made along the way. I...

3 months ago | 1

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Given two arrays, find the maximum overlap
Given two (integer) arrays s1 and s2, create a new array s3 which is as short as possible and contains both arrays. #1 s1 = [...

3 months ago

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Remove all the words that end with "ain"
Given the string s1, return the string s2 with the target characters removed. For example, given s1 = 'the main event' your ...

4 months ago

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De-dupe
Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

4 months ago

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Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

4 months ago

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Counting in Finnish
Sort a vector of single digit whole numbers alphabetically by their name, in Finnish. See the Wikipedia page for <http://en.wik...

4 months ago

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Convert Volume Mixing Ratio to Density
The partial pressure of a constituent gas species of the atmosphere can be expressed in parts per million by volume. For exampl...

4 months ago

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Snow Accumulation and Structural Risks To Residential Properties
The density of snow depends on the amount of liquid water it contains: Dry Snow is about 50 kg/m^3 Wet Snow is about 200 kg/m^...

4 months ago

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Extracting natural frequencies and mode shapes from a Simscape Multibody model
Hi @Edward Yap, I went through your comments and wanted to provide some additional detail on the linearization approach that ...

4 months ago | 0

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How do I reset a connection to a picoscope without instrreset?
Hi @Patrick, I saw your question regarding the deprecation of `instrreset` in MATLAB R2025b, and I wanted to provide some ins...

4 months ago | 0

| accepted

Answered
Evaporator heat-flow reversed in refrigerant loop model (Simscape)
Hi @Aiden, Thanks for the update and glad my earlier comments helped you narrow this down. What you’re seeing fits well wi...

4 months ago | 0

| accepted

Answered
Reduced flexible model results across different MATLAB Versions
Hi @younghwa park, I looked at your code in the GitHub link provided by you and the deflection difference between version...

4 months ago | 0