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xiexiezaijian


626 total contributions since 2016

A USTCer major in physics and do the research with the help of MATLAB.

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Solved


ASCII Birthday Cake
Given an age and a name, give draw an ASCII birthday cake. For example, given the name "CODY" and the age 5, return a string wit...

2년 이하 ago

Solved


Pentagonal Numbers
Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

2년 이하 ago

Solved


Energy of a photon
Given the frequency F of a photon in giga hertz. Find energy E of this photon in giga electron volts. Assume h, Planck's ...

2년 이하 ago

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How to subtract?
* Imagine you need to subtract a few numbers using MATLAB. * You will not be using eval for this task. * Given two ASCII strin...

2년 이하 ago

Solved


Quote Doubler
Given a string s1, find all occurrences of the single quote character and replace them with two occurrences of the single quote ...

약 2년 ago

Solved


Which doors are open?
There are n doors in an alley. Initially they are all shut. You have been tasked to go down the alley n times, and open/shut the...

약 2년 ago

Answered
How to draw the collision of two ball with Matlab?
I think using these built-in functions will help: 1. handle01 = plot([X1,X2],[Y1,Y2],'.','MarkerSize',10);% draw two points t...

3년 이하 ago | 2

| accepted

Answered
Please I need help in MATLAB!!
since no loops and no bin2dec, this work could be done using the definition of binary number and vecterization operation. Take b...

3년 이하 ago | 1

Answered
How to do it?
I see, if no boundary, it will be easy with the help of built-in functions: 1. [x,y] = meshgrid(input arguments)% get the mes...

3년 이하 ago | 1

Solved


Special matrix
Make a square matrix with this shape. For n=4 M = 1 1 0 0 1 0 1 0 0 1 0 ...

3년 이하 ago

Solved


What is the distance from point P(x,y) to the line Ax + By + C = 0?
Given a point, P(x,y), find the distance from this point to a linear line. INPUTS: x, y, A, B, C OUTPUTS: d, the distance ...

3년 이하 ago

Solved


What is Sum Of all elements of Matrix
Given the matrix x, return the sum of all elements of matrix. Example: Input x = [ 1 2 0 0 0 0 6 9 3 3 ] ...

3년 이하 ago

Solved


Simple date to serial no. conversion
Convert a date string to a serial date number. For example if you take x='19-May-2001' then the result is 730990 x...

3년 이하 ago

Solved


Volume of a sphere given its surface area
You just measured its surface area, that is the input.

3년 이하 ago

Solved


Remove the Zero
Given an array n, remove all zeros

3년 이하 ago

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subtract central cross
Given an n-by-n square matrix, where n is an odd number, return the matrix without the central row and the central column.

3년 이하 ago

Solved


Create an index-powered vector
Given a input vector x, return y as index-powered vector as shown below. Example x = [2 3 6 9] then y should be [...

3년 이하 ago

Solved


Matrix of almost all zeros, except for main diagonal
Write a program to input an integer n and build a n-by-n matrix with the numbers 1,2,...,n on the main diagonal and zeros elsewh...

3년 이하 ago

Solved


Is My Wife Wrong?
Answer the question. (see also <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right Problem 149: Is my ...

3년 이하 ago

Solved


Square a Number
Given an input x, return y, which is equal to the square of x.

3년 이하 ago

Solved


Multiples of a Number in a Given Range
Given an integer factor _f_ and a range defined by _xlow_ and _xhigh_ inclusive, return a vector of the multiples of _f_ that fa...

3년 이하 ago

Solved


root?
* Given a function 'foo', and a position 'there', find the root near 'there'. * For example: If foo=@sin, and there=3.1, then r...

3년 이하 ago

Solved


Getting the indices from a matrice
Getting the indices from a matrice. Inspired by Problem 645. Getting the indices from a vector by the great Doug Hull. Given a...

3년 이하 ago

Solved


Vector of numbers divisible by 3
* Input(n) - any integer * Output(v) - vector with numbers divisible by 3(exept 0) starting from n to 0 Examples: * n=6...

3년 이하 ago

Solved


Relative ratio of "1" in binary number
Input(n) is positive integer number Output(r) is (number of "1" in binary input) / (number of bits). Example: * n=0; r=...

3년 이하 ago

Solved


Half-Swap
Given a vector with an even number of elements, rearrange it so that the elements in its first half are switched with those i...

3년 이하 ago

Solved


square number
Square a number

3년 이하 ago

Solved


Area of a circle
Find the value for area of the circle if diameter is given

3년 이하 ago

Solved


Elapsed time is -0.005204 seconds.
Write a function that takes less than zero seconds to execute, as measured using tic and toc. For repeatability, the test case p...

3년 이하 ago

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