# Binbin Qi

### China University of Petroleum

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Professional Interests: Machine Learning/ Math/ Geophysics

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Solved

Průměr z výběrového souboru

Napište funkci, která vrátí průměr z hodnot vektoru data. Např data = [1, 2, 3, 4, 5, 6, 7, 8, 9] je prumer = 5.

6 days ago

Solved

Armstrong Number

Write a function name armstrong_check that checks whether the given input is an Armstrong Number or not. It returns logical True...

4 months ago

Solved

Given a matrix X, manipulate it accordingly

Given a matrix X, 1st add a column to the matrix whose elements are the summation of each rows. Then add a row to the matrix who...

4 months ago

Solved

Orthogonalize 3 column vectors using the Gram-Schmidt process

Use the Gram-Schmidt process to orthogonalize three linearly independent column vectors. Return three output column vectors that...

4 months ago

Solved

Orthogonalize a 2x2 matrix using the Gram-Schmidt process

Use the Gram-Schmidt process to orthogonalize two linearly independent column vectors. Return two output column vectors that are...

4 months ago

Solved

Matrix symmetry

Given a matrix A = [1 2 3; 4 5 6] Flip it horizontally and vertically to obtain a complete reversal of both rows and columns. ...

4 months ago

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Create an m x n array consisting only of an input value.

Create an array with m rows and n columns wherein all entries are assigned the input value x.

4 months ago

Solved

Return part of an array

Given a 5x5 array, return a 3x3 array that contains the cells that are not on the edge of the array: Given this array Return...

4 months ago

Solved

Summing the last column column

Given a matrix, return the sum of the last column of the array.

4 months ago

Solved

Count integers in randomized vector that are multiples of a given number.

The mod() function We might all remember the days when we were taught to divide and then set the remainder aside if the numbers...

4 months ago

Solved

Find the mean of the magic x

Given a x term, find the magic x, then find the mean/average of any one row or column.

4 months ago

Solved

nxn matrix with elements from 1:n^2

really simple once you see what the matrix is supposed to look like. i appreciate what seems to be a clever approach to solving ...

4 months ago

Solved

Find alternating sum

Given an array, find alternating sum i.e. – y = x (1) – x (2) + x (3) – x (4) + x (5) - …

4 months ago

Solved

Check for armstrong number

Given a number, check if it is an armstrong number. Eg: n = 371 Output: 1 Eg: n = 75 Output: 0

4 months ago

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Extract the prime numbers

Given a list of elements, extract the prime numbers from that array.

4 months ago

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How many offices does MathWorks have in the UK

Please write a function that returns the number of offices MathWorks has in the UK.

4 months ago

Solved

Add Even and Subtract Odd Numbers in an Array

For an input array, add all the even values and subtract the odd values. This final value is the output. E.g. input = [1 2 3 4...

4 months ago

Solved

Harmonic series counting

The function takes a positive limit as input, And counts how many terms must be summed in the harmonic series: 1/1, 1/2, 1/3, ...

4 months ago

Solved

Remove a specific row with max value

Remove the row that contain the max value in the matrix?

4 months ago

Solved

Remove a specific row with min value

Remove the row that contain the min value in the matrix?

4 months ago

Solved

Remove a specific column with max value

Remove the column that contain the max value in the matrix?

4 months ago

Solved

Remove a specific column with min value

Remove the column that contain the min value in the matrix?

4 months ago

Solved

Swap between first and last

The idea is to swap between first and last row Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; ...

4 months ago

Solved

Swap between first and last column

The idea is to swap between first and last column Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 ...

4 months ago

Solved

Find Rows with Specift Properities

Delete rows with specific properites as following: Find rows that have a negative value in any element of the row and delete it...

4 months ago

Solved

Swap between rows

The idea is to swap between second and second last row Ex = [1 2 3 4 5; 5 4 3 2 1; 1 2 3 4 5; 1 2 3 4 5; ...

4 months ago

Solved

Swap between columns

The idea is to swap between second and second last column Ex = [1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; 1 2 3 4 5; ...

4 months ago

Solved

Remove a specific character with another

Remove any (-) dash sign with (_) underscore Ex = 'The-Journey-of-thoudsands-miles-starts-with-a-single-step' y = 'The_Jour...

4 months ago

Solved

Hemisphere Volume on Top of a Cylinder

This MATLAB function has to calculate the volume of a hemisphere placed on top of a cylinder, given valid inputs. It takes the r...

4 months ago