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guoqing


2024 年からアクティブ

Followers: 0   Following: 1

I'm a postgraduate of Henan University of Science and Technology

Programming Languages:
Python
Spoken Languages:
Chinese
Pronouns:
He/him

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Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

2ヶ月 前

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Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

2ヶ月 前

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Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

2ヶ月 前

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Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false. Example...

2ヶ月 前

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Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

2ヶ月 前

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Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

2ヶ月 前

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

2ヶ月 前

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displayed ...

2ヶ月 前

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Add two numbers
Calculate the sum of two numbers. Example input = [2 3] output = 5

2ヶ月 前

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Energy of a photon
&#9883 &#9762 &#9883 &#9762 &#9883 &#9762 &#9883 Given the frequency F of a photon in giga hertz. Find energy E of this photon...

2ヶ月 前

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Convert radians to degrees
Given input in radians, output to degrees

2ヶ月 前

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Double all elements in the array
Duplicate all elements in the array

2ヶ月 前

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Find the max element of the array
Find the max element of the array

2ヶ月 前

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the average value of the elements
Calculate the average value of the elements in the array

2ヶ月 前

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Find the largest value in the 3D matrix
Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...

2ヶ月 前

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Sorted highest to lowest?
Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1

2ヶ月 前

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Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

2ヶ月 前

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Sum of diagonal of a square matrix
If x = [1 2 4; 3 4 5; 5 6 7] then y should be the sum of the diagonals of the matrix y = 1 + 4 + 7 = 12

2ヶ月 前

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Tell me the slope
Tell me the slope, given a vector with horizontal run first and vertical rise next. Example input: x = [10 2];

2ヶ月 前

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calculate the length of matrix
input 1 array, calculate the length

2ヶ月 前

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Square root
Given x (a matrix), give back another matrix, where all the elements are the square roots of x's elements.

2ヶ月 前

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Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

2ヶ月 前

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Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

2ヶ月 前

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radius of a spherical planet
You just measured its surface area, that is the input.

2ヶ月 前

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The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

2ヶ月 前

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Simple equation: Annual salary
Given an hourly wage, compute an annual salary

2ヶ月 前

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Rounding off numbers to n decimals
Inspired by a mistake in one of the problems I created, I created this problem where you have to round off a floating point numb...

2ヶ月 前

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Check if sorted
Check if sorted. Example: Input x = [1 2 0] Output y is 0

2ヶ月 前

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MATLAB Basic: rounding IV
Do rounding towards plus infinity. Example: -8.8, answer -8 +8.1 answer 9 +8.50 answer 9

2ヶ月 前

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MATLAB Basic: rounding III
Do rounding towards minus infinity. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 8

2ヶ月 前

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