# Binbin Qi

### China University of Petroleum

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Professional Interests: Machine Learning/ Math/ Geophysics

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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...

3 månader 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...

3 månader 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...

3 månader 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...

3 månader 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. ...

3 månader 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.

3 månader ago

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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 månader ago

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Summing the last column column

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

4 månader ago

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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 månader 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 månader 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 månader ago

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Find alternating sum

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

4 månader ago

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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 månader ago

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Extract the prime numbers

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

4 månader 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 månader ago

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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 månader 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 månader ago

Solved

Remove a specific row with max value

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

4 månader ago

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Remove a specific row with min value

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

4 månader ago

Solved

Remove a specific column with max value

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

4 månader ago

Solved

Remove a specific column with min value

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

4 månader 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 månader 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 månader 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 månader 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 månader 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 månader 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 månader 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 månader ago

Solved

Range of Values in a Matrix

Create a function that accepts a matrix of real numbers as input and returns the range of the values contained in the matrix. Th...

4 månader ago