Top 5% contributor
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".
4 years ago
Given n (always odd), return output a that has concentric rings of the numbers 1 through (n+1)/2 around the center point.
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...
Remove the nth column from input matrix A and return the resulting matrix in output B.
A = [1 2 3; 4 5 6];
Given a and b, return the sum a+b in c.
Replace NaNs with the number that appears to its left in the row.
If there are more than one consecutive NaNs, they should all ...
Given a string such as
s = '011110010000000100010111'
find the length of the longest string of consecutive 1's. In this examp...
Find the sum of all the numbers of the input vector x.
Input x = [1 2 3 5]
Output y is 11
Input x ...
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1.
Remove all the vowels in the given phrase.
Input s1 = 'Jack and Jill went up the hill'
Output s2 is 'Jck nd Jll wn...
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach conjecture> asserts that every even integer greater than 2 can ...
Given the input n, return true if n is odd or false if n is even.
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...
Check if sorted.
Input x = [1 2 0]
Output y is 0
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.]
There will always be at least one prime in the matrix.
Input in = [ 8 3
5 9 ]
Output out is 4...
In MATLAB, you create a vector by enclosing the elements in square brackets like so:
x = [1 2 3 4]
Commas are optional, s...
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...
Given two lists of numbers, determine the weighted average.
[1 2 3] and [10 15 20]
should result in
Triangle numbers are the sums of successive integers. So 6 is a triangle number because
6 = 1 + 2 + 3
which can be displa...
Regardless of input, output the string 'yes'.
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...
Try out this test problem first.
Given the variable x as your input, multiply it by two and put the result in y.
Choose your country to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a location from the following list:
See all countries