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Extract diagonal of sparse quadratic form

Consider the matrix A and vector v given by, A=round(sprand(5e3,1e4,1/1e4*100)*100); v=randi(10,width(A),1); Write a rout...

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TingTing

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2x2 binning of a large sparse matrix

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Compute the dispersion coefficient

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List Ormiston prime pairs

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Area of a rectangle

FInd the area of a rectangle with a length L and width W. Round to the nearest integer.

15 days ago

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Extend the digamma function to negative arguments

While solving one of Ramon Villamangca’s problems, I needed the value of , where is the digamma function. However, MATLAB’s fun...

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Describe n from right to left

If you were to describe the number 46 from right to left, you could say “one 6, one 4”, or 1614. The number 8663 would be “one 3...

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Find out if the given number is a square of natural number.

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Explore the twin prime Goldbach conjecture

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Moyenne pondérée

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Add two numbers

assign any value to two variable a, b and store their sum in variable c

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Create an empty array

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ICFP2024 010: Lambdaman Optimal-Crawler-Backfill

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ICFP2024 009: Lambdaman Crawler-Backfill

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ICFP2024 007: Lambdaman 1, 2, 3 Breadth Solver

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The Prime Days of Christmas

On the first day of Christmas my true love sent to me partridges in a pear tree. On the second day of Christmas my true love s...

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Conditional transpose II

As in problem 60734, you're given two vectors, x and y, which might be row or a column vectors. Your task is to ensure that y ha...

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ICFP2024 006: Lambda 21 - 3D

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Delete some elements in the natural set and find the sum of the first n terms

Delete the number (except 0，1) with a complete square number from the natural set of numbers, form a new set of numbers, find th...

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Conditional transpose

You're given two vectors of the same length, x and y, which might be row or a column vectors. Your task is to ensure that y has ...

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Find the closest geyser prime

My wife and I celebrated our honeymoon and our recent anniversary in Yellowstone and Grand Teton National Parks. After returning...

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Wheatstone bridge

Determine if a set of resistors maintain Wheatstone bridge equilibrium

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Organic Chemistry

Determine the names of the organic component formed with carbon and hydrogen. For example, if n=1 the name is methane

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Remove the diagonal of a square matrix

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ICFP2024 005: Lambdaman 1, 2, 3

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3 months ago

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Convert RGB to Grayscale

Convert a 3 element RGB array to its correspoding grayscale pixel (a scalar) *Hint: a formula exists!

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Palindrome Checker

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