Top 5% contributor
I've used the nprtool to generate the script to train a neural network. I wanted to change the training algorithm from trainlm t...
Asked 4 years ago
4 years ago
Given a circle's radius, compute the circle's area. Use the built-in mathematical constant pi.
3 months ago
Reverse the vector elements.
Input x = [1,2,3,4,5,6,7,8,9]
Output y = [9,8,7,6,5,4,3,2,1]
Create a row array from 9 to 1, using the double colon operator.
Given two lists of numbers, determine the weighted average.
[1 2 3] and [10 15 20]
should result in
Check if sorted.
Input x = [1 2 0]
Output y is 0
2 years ago
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.
3 years ago
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.]
The <http://en.wikipedia.org/wiki/Goldbach's_conjecture Goldbach
conjecture> asserts that every even integer greater than 2 can ...
This question was inspired by a Stack Overflow question forwarded to me
by Matt Simoneau.
Given a vector x, make an indexed pro...
Some numbers like 323 are palindromes. Other numbers like 124 are not. But look what happens when we add that number to a revers...
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...
Given a string with text and digits, add all the numbers together.
Input str = '4 and 20 blackbirds baked in a...
Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...
Regardless of input, output the string 'yes'.
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 ...
Triangle numbers are the sums of successive integers. So 6 is a triangle number because
6 = 1 + 2 + 3
which can be displa...
Given a and b, return the sum a+b in c.
Given the number x, y must be the summation of all integers from 1 to 2^x.
For instance if x=2 then y must be 1+2+3+4=10.
Remove all the vowels in the given phrase.
Input s1 = 'Jack and Jill went up the hill'
Output s2 is 'Jck nd Jll wn...
Remove the nth column from input matrix A and return the resulting matrix in output B.
A = [1 2 3; 4 5 6];
Try out this test problem first.
Given the variable x as your input, multiply it by two and put the result in y.
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...
4 years ago
There will always be at least one prime in the matrix.
Input in = [ 8 3
5 9 ]
Output out is 4...
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...
Calculate the nth Fibonacci number.
Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ...
Given the input n, return true if n is odd or false if n is even.
Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN.
Find the sum of all the numbers of the input vector x.
Input x = [1 2 3 5]
Output y is 11
Input x ...