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Norbert Marwan


Potsdam Institute for Climate Impact Research

Last seen: 1 month 前 |  自 2005 起处于活动状态

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Senior Researcher in the Potsdam Institute for Climate Impact Research (PIK), Research Department Complexity Science, Germany Professional Interests: nonlinear time series analysis, recurrence based analysis, palaeoclimate

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

8 years 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

8 years 前

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

8 years 前

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Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

8 years 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...

11 years 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 ...

11 years 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]; and ...

11 years 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.

11 years 前

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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...

11 years 前

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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 ...

11 years 前

已解决


Wrap a vector, but insert NaN's at the wrap-positions.
When you plot a line that wraps, and do not want the sawtooth shape to show up in the plot, you can either draw all separate lin...

11 years 前

已解决


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

11 years 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:...

11 years 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...

11 years 前

已解决


Weighted average
Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

11 years 前