Gelöst

Consecutive Powers
Return 2 numbers and 2 powers such that their difference is 1 A 4 element row vector is expected: x where x(1)^x(2) - x(...

mehr als 12 Jahre vor

Gelöst

Lowest sum from a group of digits
Hi there. It's James's daughter here again, and my third grade math teacher is up to her old tricks. This time, she's giving u...

fast 13 Jahre vor

Gelöst

Signed Magnitude
For a given input vector, return the value that is furthest from zero. For example, if x = [1 2 -12] return -12.

fast 13 Jahre vor

Gelöst

Convert this color - RGB Vector to Hex String
Given a 3 element RGB vector corresponding to a color (given by the MATLAB color spec <http://www.mathworks.com/help/matlab/ref/...

fast 13 Jahre vor

Gelöst

Fibonacci-Sum of Squares
Given the Fibonacci sequence defined by the following recursive relation, * F_n = F_(n-1) + F_(n-2) * where F_0 = 0 and F_1 ...

fast 13 Jahre vor

Gelöst

Better Index Number
Let's say you want to save many, many files and append these files with a certain sortable index number. As you probably know, y...

fast 13 Jahre vor

Gelöst

Add a row of zeros on top of a matrix
Given a matrix, insert a row of zeros as the top row.

fast 13 Jahre vor

Gelöst

Remove element(s) from cell array
You can easily remove an element (or a column in any dimension) from a normal matrix, but assigning that value (or range) empty....

fast 13 Jahre vor

Gelöst

Convert matrix to 3D array of triangular matrices
Given a 2D numeric array x in which each column represents the vectorized form of an upper triangular matrix, return a 3D array ...

fast 13 Jahre vor

Gelöst

Count decimal digits of a number
* Given an integer number you have to return the number of its digits. * For example 248 has 3 digits and 1589 has 4 digits ...

fast 13 Jahre vor

Gelöst

Write a cubic formula function
Create a function that will output the three roots of a cubic equation specified by the 4 coefficients listed as input. The outp...

fast 13 Jahre vor

Gelöst

Check if equal
Return true if all the elements of an nD array are equal, false otherwise.

fast 13 Jahre vor

Gelöst

Hello Everyone !!!
Who is the new cat in the block?

fast 13 Jahre vor

Gelöst

Get ranking of a combination
I have the numbers pulled without replacement from the set [1 2 3 4 5 6 7 8 9 10 11 12 13]; They are then ordered from least to...

fast 13 Jahre vor

Gelöst

QWERTY coordinates
Given a lowercase letter or a digit as input, return the row where that letter appears on a <http://en.wikipedia.org/wiki/Keyboa...

fast 13 Jahre vor

Gelöst

Making change
Given an amount of currency, return a vector of this form: [100 50 20 10 5 2 1 0.5 0.25 0.1 0.05 0.01] Example: Input a = ...

fast 13 Jahre vor

Gelöst

Sums with Excluded Digits
Add all the integers from 1 to n in which the digit m does not appear. m will always be a single digit integer from 0 to 9. no...

fast 13 Jahre vor

Gelöst

Maximum running product for a string of numbers
Given a string s representing a list of numbers, find the five consecutive numbers that multiply to form the largest number. Spe...

fast 13 Jahre vor

Gelöst

Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

fast 13 Jahre vor

Gelöst

Subset Sum
Given a vector v of integers and an integer n, return the the indices of v (as a row vector in ascending order) that sum to n. I...

fast 13 Jahre vor

Gelöst

Find the alphabetic word product
If the input string s is a word like 'hello', then the output word product p is a number based on the correspondence a=1, b=2, ....

fast 13 Jahre vor

Gelöst

Make a Palindrome Number
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...

fast 13 Jahre vor

Gelöst

Extract leading non-zero digit
<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

fast 13 Jahre vor

Gelöst

Reverse Run-Length Encoder
Given a "counting sequence" vector x, construct the original sequence y. A counting sequence is formed by "counting" the entrie...

fast 13 Jahre vor

Gelöst

Find relatively common elements in matrix rows
You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

fast 13 Jahre vor

Gelöst

Return a list sorted by number of occurrences
Given a vector x, return a vector y of the unique values in x sorted by the number of occurrences in x. Ties are resolved by a ...

fast 13 Jahre vor

Gelöst

Remove all the words that end with "ain"
Given the string s1, return the string s2 with the target characters removed. For example, given s1 = 'the main event' your ...

fast 13 Jahre vor

Gelöst

Function Iterator
Given a handle fh to a function which takes a scalar input and returns a scalar output and an integer n >= 1, return a handle f...

fast 13 Jahre vor

Gelöst

Upper triangular matrix
Create a function to retrieve the upper triangular matrix of a matrix (without using tril). The matrix will always be square. ...

fast 13 Jahre vor

Gelöst

The sum of individual numbers...
Well this one is taking a number and then summing the individual parts till you reach a value of 1, 2, 3, 4, 5, 6, 7, 8, 9, or 0...

fast 13 Jahre vor