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# Renwen Lin

### Shanghai University of Finance and Economics

Last seen: Today Active since 2012

Professional Interests: History

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Solved

Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

etwa 13 Stunden ago

Solved

We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

ein Tag ago

Solved

Construct an index vector from two input vectors in vectorized fashion
Create an index vector defined by two input vectors, one defining the beginnings of one or more index ranges, and the other defi...

2 Tage ago

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Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...

4 Monate ago

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Longest run of consecutive numbers
Given a vector a, find the number(s) that is/are repeated consecutively most often. For example, if you have a = [1 2 2 2 1 ...

4 Monate ago

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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...

5 Monate ago

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

5 Monate ago

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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...

6 Monate ago

Solved

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

6 Monate ago

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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...

6 Monate ago

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Length of the hypotenuse
Given short sides of lengths a and b, calculate the length c of the hypotenuse of the right-angled triangle. <<https://i.imgu...

6 Monate ago

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Is my wife right?
Regardless of input, output the string 'yes'.

6 Monate ago

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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 ...

6 Monate ago

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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.

6 Monate ago

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Return area of square
Side of square=input=a Area=output=b

6 Monate ago

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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 other numbers. Otherwise return false. E...

6 Monate ago

Submitted

tableAgent: A chain-method table class in Matlab
@tableAgent: A class for applying chain method on table in Matlab, and providing with many useful methods functions

Is there a faster way than str2double() to convert from a string array into a matrix containing doubles?
Try this！ Fast String to Double Conversion

mehr als 2 Jahre ago | 1

Submitted

Create Matlab Snippet for Your Own Toolbox
For VS Code user, create a matlab-snippet for your ower toolbox.

Submitted

bygroupRetimeMonthlyData
For every city or group, this function make sure that each year have 12 months with Matlab

Solved

Joining Ranges
You are given a n-by-2 matrix. Each row represents a numeric range, e.g. x = [0 5; 10 3; 20 15; 16 19; 25 25] contains...

fast 3 Jahre ago

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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 ...

fast 3 Jahre ago

Solved

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:...

fast 3 Jahre ago

Submitted

mergecellkey: Merge cell by key
mergecellkey: Merge cell by key

Submitted

cell2vars: Transform cell to vars
cell2vars: Transform cell's columns' to variables in workplace

Submitted

vars2cell
% PURPOSE: Convert selected variables in matlab workspace to the cell's columns

Submitted

strcatrobust: Combine num, char and cell to one cellstr
% B = strcatrobust(1, {'a' 'b'},[2 , 3], 't') % B is {'1a2t' '1b3t'};

Submitted

idrepetition: Find the index for the repetition terms in a cell
Find the index for the repetition terms in a cell % [ids a] = idrepetition(A) % linrenwen@gmail.co

Submitted

isrepetition: Determine TRUE or FALSE for repetition terms in a cell
Determine TRUE or FALSE for repetition terms in a cell % tfs = isrepetition(A)