Solved

Prime factor digits
Consider the following number system. Calculate the prime factorization for each number n, then represent the prime factors in a...

14 years ago

Solved

Double Deal
*Description* Given an input vector _v_, return the first element as the first output, the second element as the second outpu...

14 years ago

Solved

Make an awesome ramp for a tiny motorcycle stuntman
Okay, given a vector, say v=[1 3 6 9 11], turn it into a matrix 'ramp' like so: m=[1 3 6 9 11; 3 6 9 11 0; 6 9 ...

14 years ago

Solved

Word Counting and Indexing
You are given a list of strings, each being a list of words divided by spaces. Break the strings into words, then return a maste...

14 years ago

Solved

It dseon't mettar waht oedrr the lrettes in a wrod are.
An internet meme from 2003 (read more <http://www.snopes.com/language/apocryph/cambridge.asp here>) asserted that readers are re...

14 years ago

Solved

Clean the List of Names
Given a list of names in a cell array, remove any duplications that result from different capitalizations of the same string. So...

14 years ago

Solved

Alphabetize by last name
Given a list of names in a cell array, sort the list by the last name. So if list = {'Barney Google','Snuffy Smith','Dagwood ...

14 years ago

Solved

Multiply 2 numbers
Very easy, you just have to multiply 2 numbers but you cannot use the following signs (*, /, - ,^) ,mtimes , times, cross, pro...

14 years ago

Solved

Snakes on a plane
Given the dimensions of a 2-d plane, create a matrix where a "snake" of ones occupies the plane from top left to bottom right. ...

14 years ago

Solved

Multiply to the limit?
If y = 4*x*x/pi/pi then what is the ultimate limiting result of (1+y/1/1)(1+y/3/3)(1+y/5/5)(1+y/7/7)... ... within 1000*eps?

14 years ago

Solved

Genome Sequence 004: Long 3rd Generation Segment Correction
The Melopsittacus undulates genome, Parrot Budgerigar, was successfully sequenced in July 2012 using long 3rd Gen sequences prov...

14 years ago

Problem

Hamming Weight - Size Scoring
The Hamming Weight, <http://en.wikipedia.org/wiki/Hamming_weight wiki Hamming Weight>, in its most simple form is the number of ...

14 years ago | 1 | 10 solvers

Problem

Hamming Weight - Fast
The Hamming Weight, <http://en.wikipedia.org/wiki/Hamming_weight wiki Hamming Weight>, in its most simple form is the number of ...

14 years ago | 0 | 19 solvers

Solved

Hamming Weight - Size Scoring
The Hamming Weight, <http://en.wikipedia.org/wiki/Hamming_weight wiki Hamming Weight>, in its most simple form is the number of ...

14 years ago

Solved

Hamming Weight - Fast
The Hamming Weight, <http://en.wikipedia.org/wiki/Hamming_weight wiki Hamming Weight>, in its most simple form is the number of ...

14 years ago

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...

14 years ago

Solved

Removing rows from a matrix is easy - but what about inserting rows?
Assume A is a 5-by-5 matrix. A([2,4],:) = [] is a quick way to remove rows 2 and 4. Can you find a quick way to insert rows into...

14 years ago

Solved

Create a matrix from a cell
In this problem , you must convert a cell into a matrix and pad each cell with NaN. *Example 1:* If you have the input...

14 years 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...

14 years ago

Solved

Rotate input square matrix 90 degrees CCW without rot90
Rotate input matrix (which will be square) 90 degrees counter-clockwise without using rot90,flipud,fliplr, or flipdim (or eval)....

14 years ago

Solved

Is this date a palindrome?emordnilap a etad siht sI
Take a MATLAB date number as input, and return true if the date is a palindrome, false if the date is not a palindrome. A date ...

14 years ago

Solved

Matrix spiral
Make a spiral in a (n*n) matrix. The spiral has to start in the top left, and has to rotate clockwise to the center. The spiral ...

14 years ago

Solved

Wind outward from the center ...
Create an n-by-n matrix with elements ranging from 1 to n^2 in a rectangular spiral pattern. Example if n = 5 : 21 ...

14 years ago

Solved

Cody Computer Part 3 - Detect the graphic card used on Cody Computer
In the Cody computer investigation party, you may have already solved : <http://www.mathworks.com/matlabcentral/cody/problems...

14 years ago

Solved

Converting Decimal to Binary
Given a decimal number that may include a fractional component, convert it into binary representation. The numbers you are given...

14 years ago

Solved

Genome Sequence 003R: Sequence DNA of random positioned and flipped segments
This is Challenge 003R in the series on Genome DNA Sequencing. Challenge 3R includes flipped segments. <http://en.wikipedia.org/...

14 years ago

Solved

Matrix with different incremental runs
Given a vector of positive integers a = [ 3 2 4 ]; create the matrix where the *i* th column contains the vector *1:a(i)...

14 years ago

Solved

Combinations without using nchoosek
You have to generate a matrix with all possible combinations of n elements *taken 2* at a time, *without using nchoosek(1:n,2)* ...

14 years ago

Solved

Set some matrix elements to zero
First get the maximum of each *row*, and afterwards set all the other elements to zero. For example, this matrix: 1 2 3 ...

14 years ago

Problem

Tiles Contest: Perfect Solutions for Large Unique Tile Boards
*Tiles Contest:* The Large Unique Boards/Tiles that perfectly solve (50x50) Return Perfect solutions for both boards. Scoring...

14 years ago | 1 | 1 solver