A résolu


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...

plus de 9 ans il y a

A résolu


find the roots of a quadratic equation
for e.g x = [ 2 -1 -3] y = [1.5 -1]

plus de 9 ans il y a

A résolu


Tic Tac Toe FTW
Given a tic tac toe board: * 1 represents X * 0 represents empty. * -1 represents O It is X's move. If there is an imme...

plus de 9 ans il y a

A résolu


Counting Sequence
Given a vector x, find the "counting sequence" y. A counting sequence is formed by "counting" the entries in a given sequence...

plus de 9 ans il y a

A résolu


Extract leading non-zero digit
<http://en.wikipedia.org/wiki/Benford%27s_law Benford's Law> states that the distribution of leading digits is not random. This...

plus de 9 ans il y a

A résolu


Area of a Square
Inside a square is a circle with radius r. What is the area of the square?

plus de 9 ans il y a

A résolu


middleAsColumn: Return all but first and last element as a column vector
Given input A, return all but the first and last elements, arranged as a column vector. (I.e., all dimensions after the first s...

plus de 9 ans il y a

A résolu


Equal to their cube
Tell me three real numbers that are equal to their cubes?

plus de 9 ans il y a

A résolu


Increment a number, given its digits
Take as input an array of digits (e.g. x = [1 2 3]) and output an array of digits that is that number "incremented" properly, (i...

plus de 9 ans il y a

A résolu


High school cafeteria
Given an input vector of positive integers, return a row vector with the primes first (in increasing order) and the composites n...

plus de 9 ans il y a

A résolu


Find nearest prime number less than input number
Find nearest prime number less than input number . For example: if the input number is 125, then the nearest prime number whi...

plus de 9 ans il y a

A résolu


First N Perfect Squares
*Description* Return the first N perfect squares *Example* input = 4; output = [ 1 4 9 16 ];

plus de 9 ans il y a

A résolu


Polite numbers. Politeness.
A polite number is an integer that sums of two or more consecutive positive integers. Politeness of a positive integer is a num...

plus de 9 ans il y a

A résolu


Smith numbers
Return true if the input is a Smith number in base ten. Otherwise, return false. Read about Smith numbers at <http://en.wikipedi...

plus de 9 ans il y a

A résolu


Armstrong Number
Determine whether the given input n-digit number is Armstrong Number or not. Return True if it is an Armstrong Number. An n-D...

plus de 9 ans il y a

A résolu


Generate N equally spaced intervals between -L and L
Given N and L, return a list of numbers (in ascending order) that divides the interval [-L L] into N equal-length segments. F...

plus de 9 ans il y a

A résolu


Can the given sides form a triangle?
Can the three given sides form a triangle?

plus de 9 ans il y a

A résolu


Make a 1 hot vector
Make a vector of length _N_ that consists of all zeros except at index _k_, where it has the value 1. Example: Input ...

plus de 9 ans il y a

A résolu


Angle between Two Vectors
The dot product relationship, a dot b = | a | | b | cos(theta), can be used to determine the acute angle between vector a and ve...

plus de 9 ans il y a

A résolu


Bottles of beer
Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

plus de 9 ans il y a

A résolu


N-Queens Checker
Picture a chessboard populated with a number of queens (i.e. pieces that can move like a queen in chess). The board is a matrix,...

plus de 9 ans il y a

A résolu


Project Euler: Problem 2, Sum of even Fibonacci
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 te...

plus de 9 ans il y a

A résolu


Volume of this donut
Given hole diameter a, and outermost diameter b, determine the volume y of the resulting donut.

plus de 9 ans il y a

A résolu


Number of 1s in the Binary Representation of a Number
*Description* Return the number of 1s in the (unsigned integer) binary representation of a number. This function should be ab...

plus de 9 ans il y a

A résolu


Replace multiples of 5 with NaN
It is required to replace all values in a vector that are multiples of 5 with NaN. Example: input: x = [1 2 5 12 10 7] ...

plus de 9 ans il y a

A résolu


Balanced Ternary Numbers: Easy as |, |-, |o
This problem concerns the so-called <http://en.wikipedia.org/wiki/Balanced_ternary balanced ternary> system for representing num...

plus de 9 ans il y a

A résolu


Given an unsigned integer x, find the largest y by rearranging the bits in x
Given an unsigned integer x, find the largest y by rearranging the bits in x. Example: Input x = 10 Output y is 12 ...

plus de 9 ans il y a

A résolu


First use of arrayfun() and anonymous function @(x)
Create an anonymous function using @(x) for a parabola equation for the given coefficients stored in s with s(1)x2 + s(2)x +...

plus de 9 ans il y a

A résolu


Recycled Numbers (CodeJam Qualification Round 2012)
Let's say a pair of distinct positive integers ( _n_ , _m_ ) is recycled if you can obtain _m_ by moving some digits from the ...

plus de 9 ans il y a

A résolu


Length of a short side
Calculate the length of the short side, a, of a right-angled triangle with hypotenuse of length c, and other short side of lengt...

plus de 9 ans il y a

Charger plus