Xiaoli Zhang

Active since 2016

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Volume of a box
Given a box with a length a, width b, and height c. Solve the volume of the box.

mer än 7 år ago

Solved

Generate a Parasitic Number
This problem is the next step up from Problem 156. Rather than determining if an input is a parasitic number, you will be asked ...

mer än 8 år ago

Solved

Generalised Hamming Number
Inspired by Project Euler n°204 and Problem 1308 by James A generalised Hamming number of type n, has no prime factor larger ...

mer än 8 år ago

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nth Rational Number
Return the nth rational number. This is the inverse to Problem <http://www.mathworks.com/matlabcentral/cody/problems/1471 1...

mer än 8 år ago

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Polygonal numbers
The task of <http://www.mathworks.co.uk/matlabcentral/cody/problems/5 Problem 5> is to calculate triangular numbers. By playing ...

mer än 8 år ago

Solved

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...

mer än 8 år ago

Solved

For loops: Odds sum
Write a for loop that assigns summedValue with the sum of all odd values from 1 to userNum. Assume userNume is always greater th...

mer än 8 år ago

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N-th Odious
Given index n return n-th <https://oeis.org/A000069 odious number>.

mer än 8 år ago

Solved

Bell Number calculator
Calculate a vector of Bell numbers for sets up to length n. Bell numbers are the maximum number of partitions of a set. See the ...

mer än 8 år ago

Solved

Polite numbers. N-th polite number.
A polite number is an integer that sums of at least two consecutive positive integers. For example _7 = 3+4_ so 7 is a polite...

mer än 8 år ago

Solved

Bridge toll
Complete the example to calculate finalToll. The base toll for a bridge is baseToll. If the vehicle's weight is over 5,000 pound...

mer än 8 år ago

Solved

Perfect Square or not
find Given input x is perfect square or not,if yes then output y=1.else y=0

mer än 8 år ago

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Find the logic
There exists one logic in between input and output. Find it (easy math). Example 1: x=13 then y=339; Example 2: x=26...

mer än 8 år ago

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Writing a while loop
Write a while loop that continues to increment userValue by 5 until userValue is less than 0.

mer än 8 år ago

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Food safety
Assign safeTemperature with 1 if foodTemperature is less than 40 or greater than 165.

mer än 8 år ago

Solved

Derivative of polynomial
Compute the derivative of a given polynomial. The input is an <http://www.mathworks.com/help/matlab/math/representing-polynomial...

mer än 8 år ago

Solved

Sophie Germain prime
In number theory, a prime number p is a *Sophie Germain prime* if 2p + 1 is also prime. For example, 23 is a Sophie Germain prim...

mer än 8 år ago

Solved

Is it an Armstrong number?
An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself. Fo...

mer än 8 år ago

Solved

Close MATLAB with keyboard
Close MATLAB with keyboard without using mouse

mer än 8 år ago

Solved

Gauss Eliminate 2-by-2 example
Use forward elimination to make the coefficient matrix, A, an upper triangular matrix, and then solve using back substitution, f...

mer än 8 år ago

Solved

While loop: Summation
Write a while loop that assigns summedValue with the sum of all values from 1 to userNum. Assume userNum is always greater than ...

mer än 8 år ago

Solved

Matlab Basics - Rounding II
Write a script to round a variable x to 3 decimal places: e.g. x = 2.3456 --> y = 2.346

mer än 8 år ago

Solved

Roots
Find out the roots of a given polynomial equation.Given are the coefficients of the equation.

mer än 8 år ago

Solved

Duplicate a character
Duplicate a character 'n' times. Example 1: str='a' n=5 output='aaaaa' Example 2: str='*' n=3 output='***'

mer än 8 år ago

Solved

matrix of natural number
Given a number n, create an n-by-n matrix in which the integers from 1 to n^2 resides seially as shown in the examples below. ...

mer än 8 år ago

Solved

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

mer än 8 år ago

Solved

ASCii Code
Using Matlab get the ASCii for '?'

mer än 8 år ago

Solved

Swap two numbers
Example Input: a = 10 b = 20 Output a = 20 b = 10

mer än 8 år ago

Solved

DC chopper
Input x is the sampled signal vector, may have both AC and DC components. output vector y should have AC components removed then...

mer än 8 år ago

Solved

Switch matrix to a column vector
for e.g. x = [1 2 3 4] y = 1 3 2 4

mer än 8 år ago