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# Jiahang Li

##### Last seen: circa 2 mesi ago
985 total contributions since 2018

Information and computing science student in China. I started playing Cody on 27th February 2018. MATLAB is my favorite tool in learning.

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vectors counting by 5
Create a vector with numbers from x_min to x_max in increments of 5.

circa un anno ago

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Take two incoming vectors and output the sum of the two vectors

circa un anno ago

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Matrix multiplication
Multiply two incoming matrices via matrix multiplication

circa un anno ago

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Find 0 in array
Given array find where there 0 is.

circa un anno ago

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ZigZag - 01
Given a matrix, return the elements that are on the Z form of the matrix. For example - a=[1,2,3; 4,5,6; 7,8,9] ...

circa un anno ago

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Determina el número de cifras de un número
Crea una función que te devuelva el número de cifras de un número. Algunos ejemplos para ayudarte serían: El número 125 tie...

circa un anno ago

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Anagram
Given two strings, check whether they're anagrams to each other or not.

circa un anno ago

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Area-03
There are two circles of equal size are inscribed inside a square. They are tangent to each other. <https://serving.photos.ph...

circa un anno ago

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Basic matrix operations using standard MATLAB commands
Create the matrix: 1.0e+15 * 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000...

circa un anno ago

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Create tangent function out of sine function only
Please don't use cosine and tangent functions

circa un anno ago

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Create tangent function out of cosine only
Please don't use tangent and sine functions

circa un anno ago

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Get all prime factors
List the prime factors for the input number, in decreasing order. List each factor. If the prime factor occurs twice, list it as...

circa un anno ago

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Count me in
Count the number of occurrences of the second input in the first input Ex. x1 = 12344455511; x2 =2; output = 1 ...

circa un anno ago

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Determinant of a 3x3 Matrix
Return the determinant of a 3x3 matrix. The built-in Matlab function det is not allowed.

circa un anno ago

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New Matrix with vector addition on diagonal
consider 2 vectors x=[1 2 3] y=[4 5 6] then generate a new Matrix, where Addition of x & y will be diagonal Elements...

circa un anno ago

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Creating a code via test suite :)
Given the test suites, create a code that would fit them :) *Clue: Pascal's Triangle

circa un anno ago

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Primes Checker
Given variable inputs Check if they are prime numbers

circa un anno ago

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Upper Matrix Mock
Given a vector v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 0 1 3 6 9; 0 0 1 3 6; 0 0 0 1...

circa un anno ago

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Integrate Me
Given polynomial, output the integral (with k = 1 for simplicity purposes) Example: input = [2 1] % 2x+1 output = [1 1 1]...

circa un anno ago

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ASCII sum of phrases
Find the sum of the numeric equivalents of all characters entered in a phrase. For example: for the phrase 'My name is test', th...

circa un anno ago

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Raise each element to the power of its index in a matrix
In a matrix, A = [1,2;3,4] raise the power of each element like: 1^1+2^3+3^2+4^4 and add it all to produce the result 274

circa un anno ago

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Product of all elements in an array
Compute the product of all elements in an array.

circa un anno ago

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Capitalized string operations
Convert the input sentence to upper case and replace all vowels with an underscore ('_')

circa un anno ago

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generate capital english alphabets
Based on the numeric input 'n', generate the capital english alphabet starting from A till the english alphabet at the 'n'th pos...

circa un anno ago

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Remove white spaces at the end of the input string
Remove all trailing white spaces at the end of the input strings

circa un anno ago

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Check for keywords
If the entered string is a MATLAB keyword, return true else false

circa un anno ago

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Repetition of matrices
*A is a bold matrix: [1 2 3; 4 5 6;7 8 9]* Given an integer 'n' , a matrix B exists such that has n copies of A in the row an...

circa un anno ago

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Find NaNs in the matrix
Return 1s wherever there is a NaN in the input matrix

circa un anno ago

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Return median of a matrix
Compute median of a matrix of any dimension. Exclude the NaNs if any.

circa un anno ago

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Cofactor
Given a matrix, find the cofactor of the element in 'i'th row and 'j'th column.

circa un anno ago