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Bruce Raine


115 2010 이후 총 참여 횟수

I like to solve most kinds of maths problems that I come across. I have used MATLAB for around 7 years and really enjoy programming it to solve maths and statistics problems. I hold a Masters degree entitled: Master of Computing and Mathematical Sciences (Hons).
Professional Interests: Maths and Programming

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해결됨


Frobenius Norm
Write your own version of Frobenius Norm without using the 'norm' function.

7년 이상 전

문제


Frobenius Norm
Write your own version of Frobenius Norm without using the 'norm' function.

7년 이상 전 | 1 | 솔버 수: 101

해결됨


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...

8년 이하 전

해결됨


Find the definite integral of various linear functions
A definite integral had a minimum and maximum limit. When you solve this type of problem you must use both quad and the trapz fu...

8년 이하 전

문제


Find the definite integral of various linear functions
A definite integral had a minimum and maximum limit. When you solve this type of problem you must use both quad and the trapz fu...

8년 이하 전 | 1 | 솔버 수: 47

문제


How long do each of the stages of the rocket take to burn?
A space rocket has 3 stages: - stage 1, s1; - stage 2, s2; - stage 3, s3. If s1 burns 3 x as long as s2 which burns ...

8년 이하 전 | 0 | 솔버 수: 78

해결됨


How long do each of the stages of the rocket take to burn?
A space rocket has 3 stages: - stage 1, s1; - stage 2, s2; - stage 3, s3. If s1 burns 3 x as long as s2 which burns ...

8년 이하 전

문제


Find the nearest integer
Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...

8년 이하 전 | 1 | 솔버 수: 250

해결됨


Find the nearest integer
Given a vector of integers and a real number find the closest integer. EX: >> a = [2 4 5 6 8 10]; >> b = 4.6; >> nea...

8년 이하 전

문제


How many days does the cat take to climb out of the hole?
A cat accidentally falls down a hole with sloping but rough sides. It can climb out of the hole of height h metres, but for ever...

8년 이하 전 | 4 | 솔버 수: 64

해결됨


How many days does the cat take to climb out of the hole?
A cat accidentally falls down a hole with sloping but rough sides. It can climb out of the hole of height h metres, but for ever...

8년 이하 전

해결됨


Penny flipping - calculate winning probability (easy)
Two players are playing a fair penny flipping game. For each flip, the winner adds one penny from the loser's collection to his/...

8년 이하 전

해결됨


Sorted highest to lowest?
Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1

8년 이하 전

해결됨


inner product of two vectors
inner product of two vectors

8년 이하 전

해결됨


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 ...

약 8년 전

해결됨


radius of a spherical planet
you just measured its surface area, that is the input.

약 8년 전

해결됨


Swap the input arguments
Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

약 8년 전

해결됨


Multiply a column by a row
* Given a column vector C and and a row vector R. * Output a matrix M. * Every column of M equals to C multiplied by correspon...

약 8년 전

해결됨


Distance walked 1D
Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

약 8년 전

해결됨


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...

약 8년 전

해결됨


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] ...

약 8년 전

해결됨


Will there be a new leader?
Simply answer the title.

약 8년 전

해결됨


The Answer to Life, the Universe, and Everything
A variation of a previous Hitchhiker's Guide to the Galaxy problem. *Inputs:* Life, the Universe, and Everything *Output:*...

약 8년 전

해결됨


Rotate a Matrix by 90 degrees
Rotate a Matrix by 90 degrees Example: If the input is: X = 1 2 3 4 5 6 7 8 9 ...

8년 이상 전

해결됨


Convert from Base 10 to base 5
Convert the input number from base 10 into base 5: for example: if a(in base 10)= 5 then a(in base 5)= 10

8년 이상 전

해결됨


Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

8년 이상 전

해결됨


Compute a dot product of two vectors x and y
x and y are input vectors, d is a number and contains their dot product

9년 이하 전

해결됨


Whether the input is vector?
Given the input x, return 1 if x is vector or else 0.

9년 이하 전

문제


Is A the inverse of B?
Given a matrix A and a matrix B, is A the inverse of B? >>A=[2,4;3,5]; >>B=[-2.5,2;1.5,-1]; >>isInverse...

9년 이하 전 | 1 | 솔버 수: 309

해결됨


Sum of first n terms of a harmonic progression
Given inputs a, d and n, return the sum of the first n terms of the harmonic progression a, a/(1+d), a/(1+2d), a/(1+3d),....

9년 이하 전

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