|
Revision 407, 443 bytes
(checked in by tapted, 4 years ago)
|
|
Import of some matlab code written during honours
|
| Line | |
|---|
| 1 | function idxs = randindex(asize) |
|---|
| 2 | % Returns an array of random indirect indexes for an array of size asize |
|---|
| 3 | % |
|---|
| 4 | % Author: Trent Apted / tapted / 0010433 |
|---|
| 5 | |
|---|
| 6 | for i=1:asize, |
|---|
| 7 | idxs(i) = i; |
|---|
| 8 | end |
|---|
| 9 | for i=1:asize, |
|---|
| 10 | x=randBetween(i, asize); |
|---|
| 11 | tmp=idxs(i); |
|---|
| 12 | idxs(i) = idxs(x); |
|---|
| 13 | idxs(x) = tmp; |
|---|
| 14 | end |
|---|
| 15 | |
|---|
| 16 | |
|---|
| 17 | function idx = randBetween(m, n) |
|---|
| 18 | r = rand(1); |
|---|
| 19 | if r == 1.0 |
|---|
| 20 | r = 1.0 - eps; |
|---|
| 21 | end |
|---|
| 22 | idx = floor(r*(n-m+1)) + m; |
|---|
