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Ziwei Liu


Last seen: 4 months 前 |  自 2019 起处于活动状态

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已回答
Z score to p values
Two-tailed p value should actually be 2 * (1 - normcdf(z)). normcdf(z) gives the area under curve on the left side of z. This i...

8 months 前 | 1

已解决


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

1 year 前

已解决


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...

1 year 前

已解决


Pattern matching
Given a matrix, m-by-n, find all the rows that have the same "increase, decrease, or stay same" pattern going across the columns...

1 year 前

已解决


Target sorting
Sort the given list of numbers |a| according to how far away each element is from the target value |t|. The result should return...

1 year 前

已解决


Indexed Probability Table
This question was inspired by a Stack Overflow question forwarded to me by Matt Simoneau. Given a vector x, make an indexed pro...

1 year 前

已解决


Clean the List of Names
Given a list of names in a cell array, remove any duplications that result from different capitalizations of the same string. So...

1 year 前

已解决


De-dupe
Remove all the redundant elements in a vector, but keep the first occurrence of each value in its original location. So if a =...

1 year 前

已解决


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

1 year 前

已解决


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...

1 year 前

已解决


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 ...

1 year 前

已解决


Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

1 year 前

已解决


Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...

1 year 前

已解决


Add two numbers
Given a and b, return the sum a+b in c.

1 year 前

已解决


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

1 year 前

已解决


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

1 year 前

已解决


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

1 year 前

已解决


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

1 year 前

提问


How to change the shape/size of a HeatMap/clustergram?
Hi, I'm working on a data with a 8 by 53 matrix, and I'm trying to generate a heatmap using the HeatMap function. The figure tur...

3 years 前 | 2 个回答 | 0

2

个回答

提问


How to find maximum frequency of a 2D image after fourier transform?
Hi, I have a 2D grayscale image I, and I've done fourier transform using fft, with center shifted (fftshift). I want to find th...

5 years 前 | 1 个回答 | 0

1

个回答

提问


In Ode15s, how do I break the time span into smaller intervals and call the solver twice, so that the integration proceeds faster?
Hi, can anyone explain these lines from the Matlab website to me? and I understand how splitting the total time span in...

5 years 前 | 1 个回答 | 0

1

个回答