# Shlomo Geva

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**Content Feed**

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 ...

7 mesi ago | 0

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...

7 mesi ago | 0

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 ...

7 mesi 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...

7 mesi ago | 2 answers | 0

### 2

answersSubmitted

progressDemo

A demo of a very simple progress monitor for parfor

8 mesi ago | 1 download |

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...

10 mesi ago | 0

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...

10 mesi 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,...

10 mesi 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...

10 mesi ago

Solved

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...

10 mesi 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 ...

10 mesi ago

Solved

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...

10 mesi ago

Solved

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...

10 mesi ago

Solved

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...

10 mesi ago

Solved

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...

10 mesi 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 = ...

10 mesi ago

Solved

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...

10 mesi ago

Solved

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 ...

10 mesi ago

Solved

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...

10 mesi ago

Solved

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...

10 mesi 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...

10 mesi ago

Solved

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...

10 mesi ago

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, ....

10 mesi ago

Solved

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...

10 mesi ago

Solved

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...

10 mesi 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...

10 mesi ago

Solved

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...

10 mesi 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 ...

10 mesi ago

Solved

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...

10 mesi ago