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Federico


TU Berlin

2011 年からアクティブ

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質問


Customizing tab completion
I have a function that accepts paired name/value arguments, e.g. solve(A,b,'accuracy',1e-13,'method','LU','threshold',1e-...

約12年 前 | 1 件の回答 | 0

1

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問題


Column norms of a matrix
Given a matrix M, return a vector y such that for each k y(k)=norm(M(:,k)) (y(k) is the Euclidean norm of the k-th col...

約12年 前 | 9 | 428 個のソルバー

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Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

約12年 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".

約12年 前

解決済み


Column norms of a matrix
Given a matrix M, return a vector y such that for each k y(k)=norm(M(:,k)) (y(k) is the Euclidean norm of the k-th col...

約12年 前

回答済み
return value optimization when overwriting
It seems that you can indeed, see http://blogs.mathworks.com/loren/2007/03/22/in-place-operations-on-data/? I cannot understa...

約12年 前 | 0

質問


overloading x=[a b; c d]
Suppose a,b,c,d are instances of a custom Matlab class. I can redefine [a b] and [a;b] by overloading horzcat() and vertcat(); h...

約12年 前 | 1 件の回答 | 2

1

回答

解決済み


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

約12年 前

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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...

約12年 前

解決済み


Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

約12年 前

解決済み


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...

約12年 前

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Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

約12年 前

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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 ...

約12年 前

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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.

約12年 前

解決済み


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

約12年 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.

約12年 前

解決済み


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:...

約12年 前

質問


return value optimization when overwriting
Consider the following scenario. function A=frobnicate(A) A(1)=1; end X=zeros(2000,2000); X=frobnicate(X); ...

約12年 前 | 2 件の回答 | 0

2

回答

質問


Detecting "a and b are the same variable" in O(1) via pointers
I know Matlab uses copy-on-write; that is, if I assign |a=b| and then never modify |a| and |b|, they point to the same chunk of ...

約12年 前 | 2 件の回答 | 0

2

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質問


GLOBAL could be very inefficient
I am using a GLOBAL statement inside an if command, so that I import the global variable into the local namespace only if it is ...

12年以上 前 | 1 件の回答 | 0

1

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質問


GLOBAL could be very inefficient
I am using the GLOBAL instruction inside an if statement, to create a global variable only if it is needed. However, the code an...

12年以上 前 | 0 件の回答 | 0

0

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