Problem


Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if x = [1 2...

fast 15 Jahre vor | 23 | 5255 Lösungsvorschläge

Problem


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 15 Jahre vor | 19 | 2902 Lösungsvorschläge

Problem


Pascal's Triangle
Given an integer n >= 0, generate the length n+1 row vector representing the n-th row of <http://en.wikipedia.org/wiki/Pascals_t...

fast 15 Jahre vor | 26 | 4520 Lösungsvorschläge

Problem


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 15 Jahre vor | 13 | 2161 Lösungsvorschläge

Problem


Quote Doubler
Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

fast 15 Jahre vor | 17 | 3911 Lösungsvorschläge

Problem


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...

fast 15 Jahre vor | 49 | 4895 Lösungsvorschläge

Problem


Create times-tables
At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

fast 15 Jahre vor | 115 | 19979 Lösungsvorschläge

Problem


Most nonzero elements in row
Given the matrix a, return the index r of the row with the most nonzero elements. Assume there will always be exactly one row th...

fast 15 Jahre vor | 41 | 7506 Lösungsvorschläge

Problem


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 15 Jahre vor | 28 | 2736 Lösungsvorschläge

Problem


Sort a list of complex numbers based on far they are from the origin.
Given a list of complex numbers z, return a list zSorted such that the numbers that are farthest from the origin (0+0i) appear f...

fast 15 Jahre vor | 29 | 5822 Lösungsvorschläge

Problem


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

fast 15 Jahre vor | 47 | 5172 Lösungsvorschläge

Problem


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...

fast 15 Jahre vor | 17 | 3826 Lösungsvorschläge

Problem


Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

fast 15 Jahre vor | 122 | 22581 Lösungsvorschläge

Problem


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

fast 15 Jahre vor | 75 | 8796 Lösungsvorschläge

Problem


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 15 Jahre vor | 61 | 2256 Lösungsvorschläge

Problem


Finding Perfect Squares
Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

fast 15 Jahre vor | 191 | 21958 Lösungsvorschläge

Problem


Remove the vowels
Remove all the vowels in the given phrase. Example: Input s1 = 'Jack and Jill went up the hill' Output s2 is 'Jck nd Jll wn...

fast 15 Jahre vor | 30 | 6465 Lösungsvorschläge

Problem


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

fast 15 Jahre vor | 38 | 4016 Lösungsvorschläge

Problem


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...

fast 15 Jahre vor | 82 | 8540 Lösungsvorschläge

Problem


Summing digits
Given n, find the sum of the digits that make up 2^n. Example: Input n = 7 Output b = 11 since 2^7 = 128, and 1 + ...

fast 15 Jahre vor | 36 | 7891 Lösungsvorschläge

Problem


Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

fast 15 Jahre vor | 119 | 23306 Lösungsvorschläge

Problem


Bullseye Matrix
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point. Exampl...

fast 15 Jahre vor | 99 | 6111 Lösungsvorschläge

Problem


Find the longest sequence of 1's in a binary sequence.
Given a string such as s = '011110010000000100010111' find the length of the longest string of consecutive 1's. In this examp...

fast 15 Jahre vor | 81 | 6866 Lösungsvorschläge

Problem


Find all elements less than 0 or greater than 10 and replace them with NaN
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

fast 15 Jahre vor | 73 | 15822 Lösungsvorschläge

Problem


Return the largest number that is adjacent to a zero
This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

fast 15 Jahre vor | 28 | 5549 Lösungsvorschläge

Problem


Find the numeric mean of the prime numbers in a matrix.
There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

fast 15 Jahre vor | 48 | 9177 Lösungsvorschläge

Problem


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 ...

fast 15 Jahre vor | 26 | 4202 Lösungsvorschläge

Problem


Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

fast 15 Jahre vor | 109 | 14403 Lösungsvorschläge

Problem


Back and Forth Rows
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 wind back and forth along the rows as shown in the...

fast 15 Jahre vor | 58 | 7003 Lösungsvorschläge

Problem


Determine whether a vector is monotonically increasing
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

fast 15 Jahre vor | 164 | 23618 Lösungsvorschläge

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