Gelöst

Simple equation: Annual salary
Given an hourly wage, compute an annual salary by multiplying the wage times 40 and times 50, because salary = wage x 40 hours/w...

fast 9 Jahre vor

Gelöst

Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

fast 9 Jahre vor

Gelöst

Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

fast 9 Jahre vor

Gelöst

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...

fast 9 Jahre vor

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Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

fast 9 Jahre vor

Gelöst

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...

fast 9 Jahre vor

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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

fast 9 Jahre vor

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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...

fast 9 Jahre vor

Gelöst

Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

fast 9 Jahre vor

Gelöst

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

fast 9 Jahre vor

Gelöst

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...

fast 9 Jahre vor

Gelöst

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

fast 9 Jahre vor

Gelöst

Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

fast 9 Jahre vor

Gelöst

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...

fast 9 Jahre vor

Gelöst

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...

fast 9 Jahre vor

Gelöst

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

fast 9 Jahre vor

Gelöst

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. Examp...

fast 9 Jahre vor

Gelöst

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 ...

fast 9 Jahre vor

Gelöst

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...

fast 9 Jahre vor

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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...

fast 9 Jahre vor

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

fast 9 Jahre vor

Gelöst

Pizza!
Given a circular pizza with radius z and thickness a, return the pizza's volume. [ z is first input argument.] Non-scored bonus...

fast 9 Jahre vor

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

fast 9 Jahre vor

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

fast 9 Jahre vor

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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 ...

fast 9 Jahre vor

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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...

fast 9 Jahre vor

Gelöst

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:...

fast 9 Jahre vor

Frage

Plot selected variables according to flag
I have three variables x1, x2 and x3 and vector, say, flag = [1 0 1] If I want to plot on the same figure x1...

fast 9 Jahre vor | 1 Antwort | 0

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Frage

do disp iterations slow down the code?
If I have an iterative solver, i.e., while norm(P-Pold) > eps; ... disp(sprintf('%10d %10.4f',k,norm(P-Pold))...

fast 9 Jahre vor | 1 Antwort | 0

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Frage

difference in declaring big arrays with iterators
Given an array (to use as an iterator) i = [1:1e8]; What is the actual difference between declaring both arrays and why ...

etwa 9 Jahre vor | 1 Antwort | 0

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