how to generate a random sequence by excluding random number for each trial?
7 views (last 30 days)
Show older comments
Mudasir Ahmed
on 30 Dec 2015
Commented: Mudasir Ahmed
on 30 Dec 2015
hi
i want to generate two random numbers in between sequence 1 to 5. like 1 and 3, or 2 and 5, or 1 and 4. but the sequence is subject to one condition. which is like, generate two random numbers from 1 to 5 by excluding one random number. for e.g.
if x=3
it means generate two numbers in between [1 2 4 5] but not 3 . 3 is excluded from the choice. the result must be like
1 and 4. or 2 and 5 etc
Kindly help me :)
with best regards mudasir ahmed
0 Comments
Accepted Answer
Image Analyst
on 30 Dec 2015
I show both cases, where it's totally random so that the number may possibly repeat, and pseudo random where no repeat is allowed. Not sure which you wanted so I had to do both:
% Get two numbers in range with possible repeats.
iMin = 1;
iMax = 5;
% Get 100 numbers between iMin and iMax
r = randi([iMin, iMax], 100);
% Get rid of one certain number
numberToRemove = 3;
r(r==numberToRemove) = []; % r is smaller now.
% Now get two numbers from that by taking the first two.
r = r(1:2)
% Get two numbers in range without any repeats.
iMin = 1;
iMax = 5;
numToTake = 2; % Must be less than iMax - iMin
% Get (iMax-iMin) numbers between iMin and iMax
r = randperm(iMax-iMin) + iMin;
% Get rid of one certain number
numberToRemove = 3;
r(r==numberToRemove) = []; % r is smaller now.
% Now get two numbers from that by taking the first two.
r = r(1:2)
More Answers (0)
See Also
Categories
Find more on Creating and Concatenating Matrices in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!