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A Mathematical Problem
Find the kth digit of the inverse of a number 'n'. Assumption: n>1

3 months ago

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Solve the matrix equation AXB + X + C = 0 for X
Let A, B, and C be square matrices of equal size, and let the matrix X be defined by the matrix equation A * X * B + X + ...

3 months ago

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Array size along k-th dimension
Given an n-dimensional array M, find the size of M along the k-th dimension (1 <= k <= n), without using size(), height() or wid...

3 months ago

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Find out the smallest number 9 times greater
What is the smallest natural number where the result of moving the digit on the far right to the front of the number is a number...

3 months ago

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Find the 2023 Russian Lunar Lander (LUNA-25)
Locate the LUNA-25, 2023 Russian Lander, by comparing Pre and Post-Landing Lunar images. Give the [row,col] of the approximate...

3 months ago

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Compute the maximal product of any two numbers whose concatenation is n
Write a function that takes an input and computes the maximal product of numbers that concatenate to . For example, if , then t...

3 months ago

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The Hacker Parole Problem
The hacker parole problem 100 hackers have been imprisoned, but have been given a way to get parole. Each of the 100 prisone...

3 months ago

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Determine aquifer properties: steady pump test in a leaky confined aquifer
Problem statement Write a function to determine the hydraulic conductivity of a leaky confined aquifer and the hydraulic condu...

3 months ago

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Determine aquifer properties: steady pump test in confined or unconfined aquifers
Problem statement Write a function to determine the hydraulic conductivity and radius of influence using data from a steady p...

3 months ago

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Primitive Root Modulo n
Given a positive integer n > 2, return a vector, v, of positive integers smaller than n that are primitive roots modulo n. If no...

3 months ago

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Roman to Integer Conversion
The idea behind this cody problem is to write a code that converts the Roman Numerals to Integers. A numeral system known as R...

3 months ago

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Compute the sum of distances from a point to the sides of an equilateral triangle
Write a function to compute the sum of the (shortest) distances from a point inside an equilateral triangle to the sides of the ...

3 months ago

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Count the ones in a divisibility matrix
Cody Problem 59506 asked solvers to compute the determinant of matrix consisting of ones in the first column and anywhere the ro...

3 months ago

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Beam me up, Scotty!
It's the mid 22nd century. You, Montgomery Scott, are appointed the chief engineer of the Starship Enterprise. The Starship is...

3 months ago

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Update course numbers and abbreviations
Suppose that the educational institution where you teach purchases new software to handle many essential functions, including co...

3 months ago

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Palindrome Checker
Create a MATLAB function that checks whether a given string is a palindrome or not. A palindrome is a word, phrase, number, or o...

3 months ago

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List the ways to write 1/n as the sum of two unit fractions
Cody Problem 59841 involved counting the ways that can be written as the sum of two unit fractions (those with a numerator of 1...

3 months ago

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Find the triplet
Given an array x of size n > 3 and an integer N, return the indices of three elements in the array that sum up to the given inte...

3 months ago

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Interval Compression
Given a set of integers, the task is to create a list of closed intervals where each interval includes its endpoints. For exampl...

3 months ago

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Compute the area of a lune
Write a function to compute the area of the shaded moon-shaped region in the figure below—that is, the area of a smaller circle ...

3 months ago

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Robust Corner Product with Special Value Handling in Arrays
Compute the product of the corner elements of an array (vector or matrix). If any corner element is NaN, return NaN. If any co...

3 months ago

Problem

Robust Corner Product with Special Value Handling in Arrays
Compute the product of the corner elements of an array (vector or matrix). If any corner element is NaN, return NaN. If any co...

3 months ago | 0 | 7 solvers

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Determine the mass of a bat which strikes a ball
Given the speed, the force of the impact and the length of the trajectory calculate the mass of the bat which the player holds p...

3 months ago

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Reversing Maximal Ascending Subsequences
Create and return a new array that contains the same elements as the input array, but with the elements within each strictly inc...

3 months ago

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Extract diagonal of sparse quadratic form
Consider the matrix A and vector v given by, A=round(sprand(5e3,1e4,1/1e4*100)*100); v=randi(10,width(A),1); Write a rout...

3 months ago

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List the first of three consecutive square-free numbers
The numbers 13, 14, and 15 are consecutive, of course, but they also share the property of being square-free. That is, each numb...

3 months ago

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Express numbers as the sum of a prime, a square, and a cube
While traveling on an interstate highway, I noticed a sign that gave distances to three places. The distances were 3, 8, and 9 m...

3 months ago

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Calculating distance of lightning based on time delay
If we know the time delay between when we see lightning and hear thunder then we can calculate approximate distance(in meters) o...

3 months ago

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finding vector pair with min angle between them
given a matrix with more than one row , compare row vectors of the given matrix and find the pair with the minumum angle between...

3 months ago

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Merge two integers
We want to merge the digits of two integers having the same number of digits to obtain a new integer whose digits are obtained b...

3 months ago