Answered

how to get average of multiple rows and subtract from one group of average to another

Here is a solution to also take care of a number of rows that is not a multiple of your grouping (e.g. 30). I made up a matrix ...

how to get average of multiple rows and subtract from one group of average to another

Here is a solution to also take care of a number of rows that is not a multiple of your grouping (e.g. 30). I made up a matrix ...

2 months ago | 0

Answered

how to get average of multiple rows and subtract from one group of average to another

%% load the fille into memory with M = csvread(filename) %% loop around M, 30 rows at a time for i=1:30:si...

how to get average of multiple rows and subtract from one group of average to another

%% load the fille into memory with M = csvread(filename) %% loop around M, 30 rows at a time for i=1:30:si...

2 months ago | 0

Answered

How do I get MATLAB to compare strings in the same way as the strcmp(str1,str2) method in the ANSI C API?

function c = cstrcmp(a,b) % c style strcmp. No type checks, use only strings and char arrays. if strcmp(a,b) c=0; else ...

How do I get MATLAB to compare strings in the same way as the strcmp(str1,str2) method in the ANSI C API?

function c = cstrcmp(a,b) % c style strcmp. No type checks, use only strings and char arrays. if strcmp(a,b) c=0; else ...

3 months ago | 0

Question

Critical code section inside parfor

With C++ one can define critical code section inside a parallel for. Is there a similar construct that can be used with Matla...

3 months ago | 2 answers | 0

Submitted

progressDemo

A demo of a very simple progress monitor for parfor

3 months ago | 1 download |

Answered

k distinct combinations of size p without replacement

You can get this as follows: 1. First generate all binary vectors of size 2^N n=dec2bin(0:2^N-1)-'0'; in the examplll...

k distinct combinations of size p without replacement

You can get this as follows: 1. First generate all binary vectors of size 2^N n=dec2bin(0:2^N-1)-'0'; in the examplll...

5 months ago | 0

Answered

Find multiple elements in an array.

function out = findMultipleElements(a,b) % Find multiple elements in an array % example: % a = [1 5 2 5 3 5 4 2...

Find multiple elements in an array.

function out = findMultipleElements(a,b) % Find multiple elements in an array % example: % a = [1 5 2 5 3 5 4 2...

5 months ago | 0

Solved

Rewrite setdiff to account for non-unique values

Setdiff(a,b) is a function that will remove all values of b from a. Sometimes, you need this function to do a little bit extra,...

5 months ago

Solved

Renaming a field in a structure array

MATLAB has a <http://www.mathworks.com/help/techdoc/ref/setfield.html setfield> and a <http://www.mathworks.com/help/techdoc/ref...

5 months ago

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Implement a ROT13 cipher

Replace each character in string s1 with the character that is shifted 13 positions from it (wrap back to the beginning if neces...

5 months ago

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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 months ago

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Who Has the Most Change?

You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

5 months ago

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Find the numeric mean of the prime numbers in a matrix.

There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

5 months ago

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Fibonacci sequence

Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

5 months ago

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Sums with Excluded Digits

Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

5 months ago

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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 months ago

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Extract leading non-zero digit

<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

5 months ago

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Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

5 months ago

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Which doors are open?

There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

5 months ago

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Make a Palindrome Number

Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

5 months ago

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Trimming Spaces

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

5 months ago

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Cell joiner

You are given a cell array of strings and a string delimiter. You need to produce one string which is composed of each string fr...

5 months ago

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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 months ago

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Remove the polynomials that have positive real elements of their roots.

The characteristic equation for a dynamic system is a polynomial whose roots indicate its behavior. If any of the <http://www.ma...

5 months ago

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Subset Sum

Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

5 months ago

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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 months ago

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Which values occur exactly three times?

Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

5 months ago

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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 months ago

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Pascal's Triangle

Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

5 months ago