Gelöst

Nearest Numbers
Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

etwa 7 Jahre vor

Gelöst

Pangrams!
A pangram, or holoalphabetic sentence, is a sentence using every letter of the alphabet at least once. Example: Input s ...

etwa 7 Jahre vor

Gelöst

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

etwa 7 Jahre vor

Gelöst

Find common elements in matrix rows
Given a matrix, find all elements that exist in every row. For example, given A = 1 2 3 5 9 2 5 9 3 2 5 9 ...

etwa 7 Jahre vor

Gelöst

Given a window, how many subsets of a vector sum positive
Given a vector: [1 0 -1 3 2 -3 1] and a window of 2, A sliding window would find: 1 + 0 = 1 0 - 1 = -1 ...

etwa 7 Jahre vor

Gelöst

Kaprekar Steps
6174 is the <http://en.wikipedia.org/wiki/6174_%28number%29 Kaprekar constant>. All natural numbers less than 10,000 (except som...

etwa 7 Jahre vor

Gelöst

Find the peak 3n+1 sequence value
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

etwa 7 Jahre vor

Gelöst

Return the 3n+1 sequence for n
A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

etwa 7 Jahre vor

Gelöst

Counting Money
Add the numbers given in the cell array of strings. The strings represent amounts of money using this notation: $99,999.99. E...

etwa 7 Jahre vor

Gelöst

Binary numbers
Given a positive, scalar integer n, create a (2^n)-by-n double-precision matrix containing the binary numbers from 0 through 2^n...

etwa 7 Jahre vor

Gelöst

Remove all the consonants
Remove all the consonants in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill'; Output s2 is 'a ...

etwa 7 Jahre vor

Gelöst

Find the two-word state names
Given a list of states, remove all the states that have two-word names. If s1 = 'Alabama Montana North Carolina Vermont N...

etwa 7 Jahre vor

Gelöst

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 ...

etwa 7 Jahre vor

Gelöst

Interpolator
You have a two vectors, a and b. They are monotonic and the same length. Given a value, va, where va is between a(1) and a(end...

etwa 7 Jahre vor

Gelöst

Read a column of numbers and interpolate missing data
Given an input cell array of strings s, pick out the second column and turn it into a row vector of data. Missing data will be i...

etwa 7 Jahre vor

Beantwortet
A doubt regarding a simple For loop indexing for certain rows only.
a = [1 2 3 4 % start point A 1 2 4 5 % delete 1 2 4 5 % delete 1 2 4 5 % delete 1 ...

etwa 7 Jahre vor | 1

Beantwortet
Numerical integration: quadgk vs integral
Thanks a lot for your answers. They have been very helpful. Best wishes, Mariano

mehr als 7 Jahre vor | 0

Frage

deval and fplot give strange warnings
Hello, I have found the following strange behaviour: 1) First, I solve an initial value problem for an ode numericall (say, w...

mehr als 7 Jahre vor | 0 Antworten | 0

0

Antworten

Beantwortet
Strange (lack of) round-off error using norm
I should have said version and computer: R2018b on Windows 64bits.

mehr als 7 Jahre vor | 0

Frage

Strange (lack of) round-off error using norm
Hello, I have found this behaviour: >> format hex >> p=[sqrt(2) sqrt(2)]*1e3; >> sqrt(sum(p.^2)) ans = 409f400000000001...

mehr als 7 Jahre vor | 1 Antwort | 0

1

Antwort

Beantwortet
I do not like this
Thanks for your answer. I know what I am getting. It is the same I got before with kron when I wanted it. For me .* had always...

mehr als 8 Jahre vor | 0

Frage

I do not like this
>> [1 2].*[1;2] ans = 1 2 2 4 I prefer the error message!

mehr als 8 Jahre vor | 1 Antwort | 0

1

Antwort

Gelöst

Choose the best fitting dominoes
You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be plac...

mehr als 11 Jahre vor

Gelöst

Find best domino orientation
Given a list of pairs, find the orientation they should be placed in a line, such that the sum of the absolute values of the dif...

mehr als 11 Jahre vor

Gelöst

Find best placement for ordered dominoes (harder)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

mehr als 11 Jahre vor

Gelöst

Rotate and display numbered tile
Imagine a square tile with four numbers on it, one on each edge. We will call these edges north, east, south, and west. If th...

mehr als 11 Jahre vor

Gelöst

Find perfect placement of non-rotating dominoes (easier)
Given a list of ordered pairs, find the order they should be placed in a line, such that the sum of the absolute values of the d...

mehr als 11 Jahre vor

Gelöst

Stuff the Board
You have a stack of tiles to put onto an array-like playing board. Each tile has a number (always an integer), and the board var...

mehr als 11 Jahre vor

Gelöst

Scoring for oriented dominoes
Given a list of ordered pairs, and the order they should be placed in a line, find the sum of the absolute values of the differe...

mehr als 11 Jahre vor

Gelöst

Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

mehr als 11 Jahre vor