Solved

Back to basics 6 - Column Vector

Covering some basic topics I haven't seen elsewhere on Cody. Given an input vector, output true or false whether it is a colu...

5 years ago

Solved

Sum of diagonal of a square matrix

If x = [1 2 4; 3 4 5; 5 6 7] then y should be the sum of the diagonals of the matrix y = 1 + 4 + 7 = 12

5 years ago

Solved

make histogram

You probably know the function hist(x,n) to get the histogram. Now try to write the function yourself! For the cheaters wanti...

5 years ago

Problem

make histogram

You probably know the function hist(x,n) to get the histogram. Now try to write the function yourself! For the cheaters wanti...

5 years ago | 0 | 14 solvers

Problem

Connect 4 (the boardgame)

You are playing the popular game "Connect 4" ( <https://en.wikipedia.org/wiki/Connect_Four>) against Matlab. Luckily, Matlab isn...

5 years ago | 3 | 14 solvers

Problem

Bubble sort

Write your own bubble sort function ( <https://en.wikipedia.org/wiki/Bubble_sort>) to sort all elements in x in ascending order....

5 years ago | 0 | 24 solvers

Problem

i forgot to use capital I

When referring to yourself you should write "I" (capital) and not "i". So correct the input string x, but be aware that other u...

5 years ago | 0 | 46 solvers

Solved

Mastermind

We are playing the boardgame mastermind <https://en.wikipedia.org/wiki/Mastermind_(board_game)>. The game master has created a 4...

5 years ago

Problem

Mastermind

We are playing the boardgame mastermind <https://en.wikipedia.org/wiki/Mastermind_(board_game)>. The game master has created a 4...

5 years ago | 2 | 11 solvers

Solved

Number of Horns on a unicorn!

Calculate the number of horns on a *unicorn*! And I'm talking about a unicorn with not more than one horn on it!

5 years ago

Solved

Trimming Spaces

Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32). Input a = ' singular value deco...

5 years ago

Solved

Return a list sorted by number of occurrences

Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

5 years ago

Solved

Reverse Run-Length Encoder

Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

5 years ago

Solved

Making change

Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

5 years ago

Solved

Counting Money

Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

5 years ago

Solved

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 =...

5 years ago

Solved

Balanced number

Given a positive integer find whether it is a balanced number. For a balanced number the sum of first half of digits is equal to...

5 years ago

Solved

Quote Doubler

Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

5 years ago

Solved

Remove all the consonants

Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

5 years ago

Solved

Pizza value using expression with parentheses

Pizza prices are typically listed by diameter, rather than the more relevant feature of area. Compute a pizza's value (cost per ...

5 years ago

Answered

How can I fit a circle to a region of pixels?

I'm not familiar with this toolbox. But have you tried simply scanning all point? you could do something like this: % creat...

How can I fit a circle to a region of pixels?

I'm not familiar with this toolbox. But have you tried simply scanning all point? you could do something like this: % creat...

5 years ago | 0

Answered

obtaining spectrogram in hertz

Hi, you should pass the sample frequency as well. spectrogram(rand(1000,1),windowsize,overlap,windowsize,fs) (The second ...

obtaining spectrogram in hertz

Hi, you should pass the sample frequency as well. spectrogram(rand(1000,1),windowsize,overlap,windowsize,fs) (The second ...

5 years ago | 1

| accepted

Answered

Doing a fft on a audio file

Hi, you should have a look at the function "spectrogram" ( <https://nl.mathworks.com/help/signal/ref/spectrogram.html> ), whi...

Doing a fft on a audio file

Hi, you should have a look at the function "spectrogram" ( <https://nl.mathworks.com/help/signal/ref/spectrogram.html> ), whi...

5 years ago | 0

Solved

Pangrams!

A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

5 years ago

Solved

Binary numbers

Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

5 years ago

Solved

Find the longest sequence of 1's in a binary sequence.

Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

5 years ago

Solved

Bottles of beer

Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

5 years ago

Problem

All odd - all even

All odd numbers in x are added, while all even numers are subtracted from this. example: x = [1 2 3 4 5]; y = +(1+3+5)-...

5 years ago | 0 | 53 solvers

Problem

Odd times even numbers in a matrix

First count the number of odd numbers in x, then the number of even. Return their product. example: x = [1 2] One odd ...

5 years ago | 0 | 43 solvers

Solved

Find the alphabetic word product

If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

5 years ago