梁正龙

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ASCii Code
Using matlab, give the symbol that is associated with ASCii code 122

2 months ago

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Convert degrees to radians
Given input in degrees, output to radians

2 months ago

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Divide by 4
Given the variable x as your input, divide it by 4 and put the result in y.

2 months ago

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Linear Motion 1
An object travels N feet in the first second of travel, N feet again during the second second of travel and N feet again during ...

2 months ago

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Matlab Basics - Switching Assignments
Switch assignments for variables x and y, for example start with x = 1 and y = 3 end with y = 1 and x = 3 Do NOT simply r...

2 months ago

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Your favourite city!
Type your favourite city.

2 months ago

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Close MATLAB with keyboard
Close MATLAB with keyboard without using mouse

2 months ago

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Back to Basics - Find no. of elements in a matrix?
Let A be a m*n matrix. Find the total no. of elements in A ? (Hint - formula based) A = [1 2 3;4 5 6]; output = 6

2 months ago

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Generate a NaN...on purpose
The goal is to create a function that will return a single "NaN" without using the nan function. I am interested to see how many...

2 months ago

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Find the Nth Root of a Given Number
Find the Nth root of a given number x. Examples x = 4096 n = 4 y = 8 x = 625 n = 5 y = 3.6239

2 months ago

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Transpose of matrix
Transpose of matrix as per test cases

2 months ago

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文字列の最初と最後の文字だけ抜き出しましょう。
文字列の最初と最後の文字をつなげて返すような関数を作成しましょう。もし文字が一つしかない場合、その文字は最初と最後の文字のため、関数はその文字を二回返すようにしておきましょう。例: stringfirstandlast('borin...

2 months ago

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Vectorize the digits of an Integer
Create a vector of length N for an integer of N digits. x = 123045; x_vec = [1 2 3 0 4 5]; I happened upon a trick ...

2 months ago

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Vector Multiplication
Vector Multiplication of three matrix as shown in test cases.

2 months ago

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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 ...

2 months ago

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Find the product of a Vector
How would you find the product of the vector [1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0] times 2?; x = [1 : 0.5 : 6]; y ...

2 months ago

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Find out value of sine given by degree.
Find out value of sine given by degree. If theta=30, it's value must be 0.5.

2 months ago

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BASICS - sum part of vector
Please make a function, where as input you get vector "x" and and vector "c", where in "c" vector you get indexes to sum. Examp...

2 months ago

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Write a code that will follow the equation y = x * (x + x) * x.
If x = 5, y = 5 * (5+5) * 5 = 250

2 months ago

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Matlab Basics II - Free Fall
An object freely falling from rest under gravity covers a distance x given by: x = 1/2 gt^2 write a function that calculat...

2 months ago

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Positive Infinity
Round the array a towards positive infinity

2 months ago

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Find Logic 15

2 months ago

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Find Logic 3

2 months ago

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Summation of array
Given an array, Find the sum of all of the elements in it Examples: Input x = [1 2 3 5; 4 5 6 7]; Output y is 33

2 months ago

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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 = ...

2 months ago

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Evaluating a polynomial
Given the following polynomial and the value for x, determine y. y = 3x^5 – x^3 + 8x – 3 Example x = 1 y = 3 - 1 +...

2 months ago

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Kinetic Energy
Given the mass m and velocity v of an object, determine its <http://en.wikipedia.org/wiki/Kinetic_energy kinetic energy>.

2 months ago

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Linear system of equations
Solve the system of equations in three variables.

2 months ago

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Back to basics 4 - Search Path
Covering some basic topics I haven't seen elsewhere on Cody. Return a string that is the user's portion of the current search...

2 months ago

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Replacing a row
For matrix G=[1 2 3; 4 5 6; 7 8 9] Replace the 2nd row with 8s **remember to create matrix G

2 months ago