Community Profile # Ninetrees

### UNH

Last seen: 11 maanden ago Active since 2011

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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...

ongeveer 6 jaar 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 ...

ongeveer 6 jaar ago

Question

Not so rhetorical question: Why the common practice of writing lines of code without white space?
I wanted to ask this of MathWorks, because they start the habit in their docs, but I didn't find a place to ask them... so... ...

ongeveer 8 jaar ago | 5 answers | 1

### 5

General Question of Matlab.
I agree somewhat with some of the previous answers. You need to understand the problem and come up with your own answers. I came...

ongeveer 8 jaar ago | 1

Submitted

Christoffel symbols and geodesics, symbolic model
Uses MATLAB symbolic processor to produce symbols

Solved

Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

ongeveer 11 jaar 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...

ongeveer 11 jaar ago

Solved

Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

ongeveer 11 jaar ago

Solved

Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

ongeveer 11 jaar ago

Solved

Is my wife right?
Regardless of input, output the string 'yes'.

ongeveer 11 jaar 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...

ongeveer 11 jaar ago

Solved

Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

ongeveer 11 jaar 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 ...

ongeveer 11 jaar ago

Solved

Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

ongeveer 11 jaar ago

Solved

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

ongeveer 11 jaar ago

Solved

Given a and b, return the sum a+b in c.

ongeveer 11 jaar ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

ongeveer 11 jaar ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

ongeveer 11 jaar ago

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

ongeveer 11 jaar ago

Solved

Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

ongeveer 11 jaar ago

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

ongeveer 11 jaar ago

Solved

Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

ongeveer 11 jaar ago

MATLAB assignment (a = 1) statements must be terminated with a ; to suppress output, but the 'natural' case is to NOT want outpu...

meer dan 11 jaar ago | 0

Question

textscan and multidimensional arrays
I have a text file that contains recordS 600 bytes long. The data is mixed: date, time, chars, ints, fps. I am using textscan...

meer dan 11 jaar ago | 0 answers | 0