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Binbin Qi


China University of Petroleum

Last seen: 2 dagen ago Active since 2009

Professional Interests: Machine Learning/ Math/ Geophysics

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  • Cody 5th Anniversary Finisher
  • Triathlon Participant
  • Knowledgeable Level 2
  • Thankful Level 1
  • Divisible by x Master
  • Logic
  • Personal Best Downloads Level 1
  • First Review
  • Computational Geometry I Master
  • Matrix Patterns II Master
  • Introduction to MATLAB Master
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Solved


Sum of two number using (regexp, varargin) comand?
Sum two number a &b and get there result in c using the rexp and varargin comand.

2 dagen ago

Solved


Draw matrix 'Swiss flag'( Euro 2020)
Draw a x-by-x matrix 'Swiss flag' using '0' and '1'.(x is odd and bigger than 4) Example x=5 ...

2 dagen ago

Solved


Easy Sequences 5: Project Euler Problem 1 - Again!
We are all familiar with Project Euler Problem 1. This time let's try it on bigger multiples and larger range. Find the sum of ...

2 dagen ago

Solved


Easy Sequences 4: Eliminate the Days of Confusion
If a date is written in purely numeric format some dates can be confusing, if we don't know the date format used. For example, "...

2 dagen ago

Solved


Easy Sequences 3: Prime 44-number Squares
The positive integers 62 and 238 are related. Their squares (3844 and 56,644) both end in '44'. In fact, 62 and 238 are the 3rd ...

3 dagen ago

Solved


Easy Sequences 2: Trigonometric function with integral input and output
The function 'F', defined as: , will always return an integer if the input is a natural number (in radian...

4 dagen ago

Solved


Easy Sequences 1: Find the index of an element
The nth element of a series is defined by: . Obviously, the first element . Given the nth element , find the value of the corre...

4 dagen ago

Solved


Total resistance of resistors in parallel
What is the total resistance of a number of resistors in parallel? A vector R contains the resistances (in Ohm) of n resistors,...

5 dagen ago

Solved


Total resistance of resistors in series
What is the total resistance of a number of resistors in series? A vector R contains the resistances (in Ohm) of n resistors, w...

5 dagen ago

Solved


Basic: fft
Calculate the value using fft

5 dagen ago

Solved


UICBioE240 problem 1.12
The mathematical quantities e^x, ln x, and log x are calculated in Matlab using the expressions exp(x), log(x), and log10(x), re...

6 dagen ago

Solved


Leftovers? Again?!
I am thinking of a positive number X. To determine what number I am thinking of, I will give you two 1xN vectors. The first ve...

6 dagen ago

Solved


Find the largest number
Find the largest number |x| among 4 numbers given as variables |a|, |b|, |c|, and |d|. Example: Input: a = 4; b = 7; c ...

6 dagen ago

Solved


Create a vector
Create a vector from 0 to n by intervals of 2.

6 dagen ago

Solved


make histogram
You probably know the function hist(x,n) to get the histogram. Now try to write the function yourself! For the cheaters wanting...

6 dagen ago

Solved


A little bit of luck needed
This one may require a little bit of guess work, but it is possible. Hints: - The same solution might fail the tests once and ...

6 dagen ago

Solved


ICFP2021 Hole-In-Wall: Calculate Score
The ICFP held its annual 3-day contest in July 2021 with Hole-In-Wall. Contest Specification. The contest folds the figure in R...

6 dagen ago

Solved


Which Prime
Given two prime numbers, specify the relation between them i.e. - 'Twin Prime', 'Cousin Prime', 'Sexy Prime' or 'None'

6 dagen ago

Solved


Create array of all Distances between two Sets of Points
This Challenge is a subsection of Martian Pranks based on Tim's efficient Distance calculation between sets of points. Given Po...

7 dagen ago

Solved


Find the maxmum value of N*N Matrix
Input x=[1 2 3; 4 5 6; 7 8 9] output: y=9

8 dagen ago

Solved


Sum the rows
Sum the rows of the given matrix. Example x = [ 1 2 3 4 ] y = [ 3 7 ]

26 dagen ago

Solved


Plotting Practice
Plot cos(x) vs x as shown in the figure below. Include the appropriate title, x-label, and y-label. Note, it is case sensitive. ...

2 maanden ago

Solved


arrayfun bomb

2 maanden ago

Solved


Divisible by n, prime divisors (including powers)
For this problem, you will be provided an array of numbers (not necessarily in order). Return the array of numbers with only pri...

3 maanden ago

Solved


What? Paradox?
What's going on here?

3 maanden ago

Solved


Functionality 1
It's all about functionality. *Cheating is allowed but not required*

4 maanden ago

Solved


Generate a matrix as follows
write a Function that gives like the following for a random n: n=2 ans= [ 0 1 1 0] n=6 ans= [ 0 ...

4 maanden ago

Solved


Sort Except Zeros
Sort the numbers in a vector. But the position of zeros should not be changed. Example: sort_except_zeros( [5 3 0 0 2 4] ) == [...

5 maanden ago

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