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Solved
Convert Celsius temperature to Fahrenheit
Given a temperature in Celsius, return the equivalent in Fahrenheit. Formula: F = C * 9/5 + 32Example: cel2fahr(100) returns 212...
1 day ago
Solved
Find the Longest Consecutive Increasing Path in a Matrix
Given a 2D matrix of integers, find the length of the longest path where each step moves to an adjacent cell (up, down, left, ri...
1 day ago
Solved
Web App POST using system curl (405 error fix)
This challenge is to create a curl command to interact with a Google Web App that takes a JSON input and returns the JSON and a ...
1 day ago
Solved
Triangle Area Using Heron's Formula
Given the three side lengths a, b, and c of a triangle, calculate its area using Heron's formula and round to 4 decimal places. ...
2 days ago
Solved
Count the vowels in a string
Given a string, return the number of vowels (a, e, i, o, u — case insensitive). Example: count_vowels('Hello World') returns 3
2 days ago
Solved
Replace All Below-Average Elements in a Matrix with Zero
Given a 2D matrix of numbers, find the mean of all elements. Replace any element that is strictly below the mean with 0. Return ...
2 days ago
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Keep Only Even Numbers
Given a vector, return a new vector containing only the even numbers in their original order. Example: keep_evens([1 2 3 4 5 6])...
2 days ago
Solved
Reverse the characters of a string
Given a string, return the string with characters in reverse order. Example: rev_string('hello') returns 'olleh'
2 days ago
Solved
Sum the main diagonal of a matrix
Given a square matrix, return the sum of its main diagonal elements. Example: diag_sum([1 2 3; 4 5 6; 7 8 9]) returns 15
2 days ago
Solved
Determine if a number is prime
Given a positive integer n, return 1 if it is prime, 0 otherwise. Example: is_prime(7) returns 1, is_prime(4) returns 0
2 days ago
Solved
Count how many elements are above the mean
Given a vector, return the count of elements strictly greater than the mean of the vector. Example: above_mean_count([1 2 3 4 5]...
2 days ago
Solved
Move Array Element by Offset with Optional Ring Mode
Move Element by Offset Write a function moveab(x, A, B, option) that moves the element at index A in array x by B positions. P...
2 days ago
Solved
The Optimal 2D Guillotine Cutting Stock Problem
You are working in a factory that produces rectangular glass sheets. You have a large stock plate of size W x H. Customers have ...
6 days ago
Solved
Create array of all Distances between two Sets of Points
This Challenge is a subsection of Martian Pranks based on Tim's efficient Distance calculation between sets of points. Given Po...
8 days ago
Solved
Form Blocks in a 1D array
Lets say I have an array of size (10,1); I want to divide it into the num number of blocks which are given by user no_of_b...
8 days ago
Solved
Robust Main Diagonal Sum with Special Value Handling in Arrays
Compute the sum of the diagonal elements of an array (vector or matrix). If array is not square return the char array: 'no-squa...
8 days ago
Problem
Robust Main Diagonal Sum with Special Value Handling in Arrays
Compute the sum of the diagonal elements of an array (vector or matrix). If array is not square return the char array: 'no-squa...
8 days ago | 0 | 5 solvers
Solved
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...
9 days ago
Solved
DNA N-Gram Distribution
Given a string s and a number n, find the most frequently occurring n-gram in the string, where the n-grams can begin at any poi...
9 days ago
Solved
Mandelbrot Numbers
The <http://en.wikipedia.org/wiki/Mandelbrot_set Mandelbrot Set> is built around a simple iterative equation. z(1) = c z...
9 days ago
Solved
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...
9 days ago
Solved
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 ...
9 days ago
Solved
Who Has the Most Change?
You have a matrix for which each row is a person and the columns represent the number of quarters, nickels, dimes, and pennies t...
9 days ago
Solved
Orthogonalize 3 column vectors using the Gram-Schmidt process
Use the Gram-Schmidt process to orthogonalize three linearly independent column vectors. Return three output column vectors that...
9 days ago
Solved
Condition number of Kronecker product
Given NxN matrix A and MxM matrix B, where M,N<=1000, write a routine to compute the condition number of kron(A,B).
9 days ago
Solved
Determine Matrix Dimensions Without Using size or length
Write a function that takes a matrix A as input and returns a row vector containing the number of rows and the number of columns...
9 days ago
Solved
Find the closest e-abundant numbers
An abundant number is an integer whose sum of its positive proper divisors—or the sum of its divisors excluding itself—exceeds ...
9 days ago
Solved
Get factory-defined property values
Given a property name (e.g. 'AxesUnits', 'LineMarkerSize', 'UicontrolBackgroundColor'), return the factory-defined value for tha...
10 days ago
