Determine if input is a perfect number
A <http://en.wikipedia.org/wiki/Perfect_number/ perfect number> occurs whent the sum of all divisors of a positive integer, exce...
約4年 前
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Matlab Basics - Rounding I
Write a script to round x DOWN to the next lowest integer:
e.g. x = 2.3 --> x = 2 also: x = 2.7 --> x = 2
約4年 前
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"mirror" matrix
Create n x 2n "mirror" matrix of this type:
Examples
For n = 2
m = [ 1 2 2 1
1 2 2 1 ]
For n = 3
m = ...
約4年 前
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Fibonacci sequence
Calculate the nth Fibonacci number.
Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ...
Examples:
Inpu...
Find the Best Hotels
Given three input variables:
* |hotels| - a list of hotel names
* |ratings| - their ratings in a city
* |cutoff| - the rat...
約4年 前
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Verify Law of Large Numbers
If a large number of fair N-sided dice are rolled, the average of the simulated rolls is likely to be close to the mean of 1,2,....
Sum all integers from 1 to 2^n
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.
約4年 前
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Solve a System of Linear Equations
Example:
If a system of linear equations in x₁ and x₂ is:
2x₁ + x₂ = 2
x₁ - 4 x₂ = 3
Then the coefficient matrix (A) is:
2 ...
約4年 前
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Find the Oldest Person in a Room
Given two input vectors:
* |name| - user last names
* |age| - corresponding age of the person
Return the name of the ol...
約4年 前
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Convert from Fahrenheit to Celsius
Given an input vector |F| containing temperature values in Fahrenheit, return an output vector |C| that contains the values in C...
約4年 前
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Calculate Amount of Cake Frosting
Given two input variables |r| and |h|, which stand for the radius and height of a cake, calculate the surface area of the cake y...
ZigZag matrix with reflected format
ZigZag MATRIX with REFLECTED format.
We have only input x. We have to create a matrix in the following pattern.
input n=5...