# 埃博拉酱

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Problem

Is the number of 1s in a binary integer odd or even?

Your function should turn the input integers into binary form and count the number of 1s in the binary. If the number is odd, re...

22 days ago | 1 | 12 solvers

Problem

Ambiguous concatenation

Give two expressions that can have different meaning inside/outside a concatenation expression.

3 months ago | 0 | 3 solvers

Solved

Check if equal

Return true if all the elements of an nD array are equal, false otherwise.

5 months ago

Solved

Curry a function handle

From Wikipedia, Currying: In mathematics and computer science, currying is the technique of converting a function that takes mu...

7 months ago

Problem

Merge structs on fields

Merge a bunch of structs into one, containing the field names and corresponding values of all input structs. For duplicate field...

7 months ago | 0 | 4 solvers

Solved

Exhaust all possible logical vectors

Input a length argument and list all possible logical vectors of that length. My solution is of size 29. Can you find an even s...

7 months ago

Solved

Maximum of ND-array

Find the maximum element of a N dimensional array. Example: A=[1 2 4 ; -20 4 10]; The maximum is 10.

7 months ago

Problem

Exhaust all possible logical vectors

Input a length argument and list all possible logical vectors of that length. My solution is of size 29. Can you find an even s...

7 months ago | 1 | 17 solvers

Solved

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 ...

7 months ago

Solved

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...

1 year 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 ...

1 year ago | 0 | 2 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...

1 year ago | 0 | 5 solvers

Solved

Dealfun (1.0)

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

1 year ago

Solved

Restricted Subtraction v1

This problem is <https://www.mathworks.com/matlabcentral/cody/problems/45265-restricted-addition-v4 Restricted Addition v4> with...

2 years ago

Solved

Restricted Multiplication v1

This problem is <https://www.mathworks.com/matlabcentral/cody/problems/45265-restricted-addition-v4 Restricted Addition v4> with...

2 years 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* ...

2 years 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...

2 years 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...

2 years ago