Community Profile # 埃博拉酱

Last seen: 4 días ago Active since 2019

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Undocumented MATLAB tricks No. 1 - Save a function-returned struct
Often we face the case when we want to save a function-returned struct to a mat file with each of its field as individual variab...

3 meses ago

Problem

Undocumented MATLAB tricks No. 2 - Tell the parfor index
Your function is called in multiple for-loops, and the loop indices are given to your function. One of these indices are from a ...

4 meses ago | 0 | 0 solvers

Problem

Undocumented MATLAB tricks No. 1 - Save a function-returned struct
Often we face the case when we want to save a function-returned struct to a mat file with each of its field as individual variab...

4 meses ago | 0 | 2 solvers

Solved

Dealfun (1.0)
*Short description.* Write a function _dealfun_: [y1,y2,...,yn]=dealfun(fhandle,x1,x2,...,xn) which evaluates the f...

4 meses ago

Solved

Find area of rectangle

11 meses ago

Solved

Find area of triangle

11 meses ago

Solved

Volatile array in parfor and for

alrededor de 1 año ago

Problem

Volatile array in parfor and for

alrededor de 1 año ago | 0 | 3 solvers

Problem

Convert sorting indices to ranks

alrededor de 1 año ago | 1 | 9 solvers

Solved

Restricted Subtraction v1

alrededor de 1 año ago

Solved

Find Logic 21

alrededor de 1 año ago

Solved

Restricted Multiplication v1

alrededor de 1 año ago

Solved

tic tac toe
Solved ticTacToe

alrededor de 1 año ago

Solved

Algorithmic Trading - 4 (two thresholds)
This is the fourth of a series of problems on quant trading. It builds on earlier problems 45776, 45860, and 45884 *Goal* ...

alrededor de 1 año ago

Solved

Algorithmic Trading - 3 (short selling and leverage)
This is the third of a series of problems on quant trading. It builds on earlier problems 45776 and 45860 <https://www.mathwo...

alrededor de 1 año ago

Solved

Algorithmic Trading - 2 (optimize Calmar Ratio)
This is the second of a series of problems on quant trading. It builds on earlier problem 45776 <https://www.mathworks.com/matla...

alrededor de 1 año ago

Problem

arrayfun bomb

alrededor de 1 año ago | 1 | 3 solvers

Problem

Magic array teasing num2cell

alrededor de 1 año ago | 0 | 1 solver

Solved

The most decentralized RGB colors

alrededor de 1 año ago

Problem

The most decentralized RGB colors

alrededor de 1 año ago | 0 | 1 solver

Solved

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.

alrededor de 1 año 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...

alrededor de 1 año ago

Solved

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...

alrededor de 1 año 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...

alrededor de 1 año 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...

alrededor de 1 año ago

Solved

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...

alrededor de 1 año 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. Examp...

alrededor de 1 año 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 ...

alrededor de 1 año ago