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Solved
Number Puzzle - 113
Give an example of a six-digit prime number abcdef for which bcde and cd are also prime numbers.
21 hours ago
Solved
Summing Rows and Columns
Create a matrix y of size (n+1) whose last column's elements are the summation of the elements of all the other columns and last...
22 hours ago
Solved
Perfect shuffle
We call "perfect shuffle" the process of cutting a deck of cards into two equal halves, and then perfectly interleaving them: on...
1 day ago
Solved
Sum the 'edge' values of a matrix
Sum the 'edge' values of an input matrix (the values along the perimeter). Example [1 2 3 4 5 6 7 8 9] Output = ...
1 day ago
Solved
Matlab Basics II - Determine if an array has a 3rd dimension
For an array A, determine whether it has 3 dimensions, return 0 if x is only 2D, and 1 if x is 3D
1 day ago
Solved
Zero or hero
A number will be given as an input. You can be hero if it's not zero. (Just for fun)
2 days ago
Solved
For a given linear index as input for n sized square matrix, find corresponding row and column.
If input is 1, the row and column will be 1 and 1 respectively.
2 days ago
Solved
Calculate feeling temperature before climbing a mountain
I sometimes climb a mountain. As is well known, when the altitude becomes 100 (m) higher, the temperature lowers by 0.6 degrees...
2 days ago
Solved
"Find out the best cricket"
This is how I originally read Problem 2013, so let's just go with it. Give me the first and last name of the best cricket, rega...
2 days ago
Solved
Fuel-Air Equivalence Ratio (Lambda)
Lambda (λ) is the ratio of actual air-fuel ratio to the stoichiometric air-fuel ratio. λ = 1 is perfect stoichiometry, λ < 1...
2 days ago
Solved
Calculate the Compression of a Spring
A mechanical engineer wants to determine how much a spring will compress when a force is applied to it. According to Hooke’s Law...
2 days ago
Solved
Twins in a Window
<http://en.wikipedia.org/wiki/Twin_primes Twin primes> are prime numbers that differ by 2, such as [11,13] or [41,43]. Write a f...
3 days ago
Solved
Twin Primes
Twin primes are pairs of primes that are immediately next to each other (difference of two). The lesser of twin primes are 3, 5,...
3 days ago
Solved
Extra safe primes
Did you know that the number 5 is the first safe prime? A safe prime is a prime number that can be expressed as 2p+1, where p is...
3 days ago
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Find the nearest prime number
Happy 5th birthday, Cody! Since 5 is a prime number, let's have some fun looking for other prime numbers. Given a positive in...
3 days ago
Solved
Covering a four-pointed star polygon by rectangles
Given the area, A, of a star polygon formed by the rectangle, with dimensions L×2L, and four triangles, with height h from their...
4 days ago
Solved
Covering a four-pointed star polygon by circles
Given the area, A, of a star polygon formed by the rectangle, with dimensions L×2L, and four triangles, with height h from their...
4 days ago
Solved
Slicing a 4-pointed star polygon
Given the area, A, of a 4-pointed star polygon formed by the rectangle, with dimensions L×2L, and four triangles, with height h ...
4 days ago
Solved
Covering a 4-pointed star polygon by a circle sector
Given the area, A, of a 4-pointed star polygon formed by the rectangle, with dimensions L×2L, and four triangles, with height h ...
4 days ago
Solved
Rotate array 90 degrees
Rotate the given matrix by 90 degrees. Example, A = [1 2 3 ; 4 5 6 ] B = rotated(A) = [ 3 6; 2 5; 1 4 ]
4 days ago
Solved
Volume of a box
Given a box with a length a, width b, and height c. Solve the volume of the box.
4 days ago
Solved
Remove All elements less than 5
Given an input vector x, remove all elements of x less than 5 . Example: Input x = [ 1 2 5 7 3 ] Output y is [ 5 7 ...
4 days ago
Solved
Initialize a Natural Number matrix.
Given length of matrix initialize a matrix consisting of natural numbers from 1 to n: n = 10; x = [ 1 2 3 4 5 6 7 8 9 10]; ...
4 days ago
