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# Rafael S.T. Vieira

##### Last seen: Today
3,098 2020 이후 총 참여 횟수

I'm a post-doctoral researcher of Computer Science at the Federal University of Ceará. And I hold a Ph.D. in Computer Science with an emphasis in Computer Graphics.

#### Rafael S.T. Vieira's 배지

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GJam 2011 Africa Qualifier B: Optimum Profit
This Challenge is derived from <http://code.google.com/codejam/contest/837485/dashboard#s=p1 GJam 2011 Africa: Investing at the ...

약 6시간 전

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GJam 2011 Africa Qual A: Maximum Loop Size
This Challenge is derived from <http://code.google.com/codejam/contest/837485/dashboard GJam 2011 Africa: Closing the Loop>. Sma...

약 7시간 전

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Given a vector x, return vector y with all negative elements from the vector x.
Given a vector x, return vector y with all negative elements from the vector x if x has negative elements. Otherwise return 0. ...

약 8시간 전

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GJam 2013 Veterans: Hedge
This Challenge is derived from <http://code.google.com/codejam/contest/2334486/dashboard Hedgemony>. This is the Large data set ...

약 8시간 전

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Circumscribed Pentagon?
Building off of <https://www.mathworks.com/matlabcentral/cody/problems/44368 Problem 44368>, your function will be provided with...

약 9시간 전

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Lunar Arithmetic (Multiplication)
<https://oeis.org/A087061 OEIS link for a description of lunar arithmetic> Simply take the larger digit when adding and take ...

약 14시간 전

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<https://oeis.org/A087061 OEIS link for a description of lunar arithmetic> Simply take the larger digit. Example 1: ...

약 14시간 전

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Muphry's Law of MATLAB
You're running some simple multiplication problems through MATLAB for error checking purposes, but nothing seems to come up with...

약 15시간 전

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Permutation Via Multiplication
Given two numbers a and b, determine if the product ab is a permutation of the digits of a. For example, this is always true for...

약 15시간 전

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The number of trailing zero digit of a factorial
For given positive integer n, take factorial of that number. How many trailing zeros does it have? Example: factorial(11) = 3...

약 15시간 전

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Still more miles to go before I sleep
It's time for more odometer fun. Last problem, my car's odometer hit 56789. It's coming up on 111111 now, which (barring a maj...

약 15시간 전

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Number construction III
Given a positive integer, n, return a, b and c, such that 1. n = a^1.5+b^2.5+c^3.5 2. a, b and c are all positive integers...

약 16시간 전

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Number construction II
Given a positive integer, n, return a, b, c and d, such that 1. n = a*2^b+c*3^d 2. a, b, c and d are all positive integers...

약 17시간 전

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Number construction I
Given a positive integer, n, return a, b, c and d, such that 1. n = a*sqrt(b)+c*sqrt(d) 2. a, b, c and d are all positive ...

약 17시간 전

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Convert float to base N
The matlab function dec2base converts a positive integer number to a specified base. Extend it so that it works with non intege...

약 20시간 전

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Integer complexity
Given an array, n, of positive integers, return an array, c, of the same size, in which each element is the <https://en.wikipedi...

1일 전

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Integer complexity (Large numbers)
Inspired by <http://www.mathworks.com/matlabcentral/cody/problems/42831-integer-complexity Problem 42831>, this problem aims to ...

1일 전

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Simple Past of Regular Verbs
Given a regular verb, return the simple past. Example Input verb = 'to work' Output simple_past = 'worked'

1일 전

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Find the coefficient of a number in scientifc notation
Given a non-negative real number N, find the coefficient C and the exponent E of its scientific notation (N = C 10^E). Note that...

1일 전

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Mimic foldl in functional programming
Mimic the higher-order function |foldl| ( <http://en.wikipedia.org/wiki/Fold_%28higher-order_function%29 Wikipedia:Fold (higher-...

1일 전

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GJam 2015 Rd1B: Noisy Neighbors
This Challenge is derived from <https://code.google.com/codejam/contest/8224486/dashboard#s=p1 GJam 2015 Rd 1B: Noisy Neighbors>...

1일 전

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Least Absolute Deviations (L1-norm) line fit - degree n
This is a generalization of Problem 45851 for degree n <https://www.mathworks.com/matlabcentral/cody/problems/45851-least-abs...

2일 전

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Least Absolute Deviations (L1-norm) line fit - degree 1
Matlab's polyfit function is very handy to find least-squares regression. It minimizes the (L2-norm) of the estimation errors, b...

2일 전

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Ackerman Function

2일 전

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ASCII art
Convert a grayscale image to ASCII <<http://www.alfnie.com/software/cameraman.jpg>> *Inputs:* * *img*: Grayscale imag...

2일 전

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Area-04
The dimension of a rectangle is given. There are two circles of equal size that are inscribed inside it.The circles are tangent ...

3일 전

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Area-03
There are two circles of equal size are inscribed inside a square. They are tangent to each other. <https://serving.photos.ph...

3일 전

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Area-02
Given the radius of the circle inscribed in a square, find the area of the square that can be fitted perfectly in the corner. ...

3일 전

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Can't wait for NewYear ball drop !
Given an input string of the form 'yyyy-mm-dd' or 'yyyy-mm-dd hh:mm:ss', return a string message indicating how many days, hours...

3일 전

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combine cells
A cell type variable is created. However it has other cells in itself. we want to integrate them all in a single cell. the conte...

3일 전