Problem 641. Make a random, non-repeating vector.

Created by Doug Hull

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This is a basic MATLAB operation. It is for instructional purposes.

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If you want to get a random permutation of integers randperm will help.

Given n, put the integers [1 2 3... N] in a random order.

Yes, the test suite is not conclusive, but it is pretty close!

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Last Solution submitted on Jul 14, 2020

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Solution 2586403

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Piero Cimule on 20 Jun 2020 at 0:15

vec = randperm(n);

Solution 1936837

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David Motson on 4 Nov 2019

Surely these ! echo "function assert(~) " >./assert.m solutions are not valid?

Solution 1917732

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Timothy Chavez on 31 Aug 2019

This solution seems to run correctly in MATLAB (desktop)... can anyone tell me why it is coming back with an "Assertion Failed"?

function vec = makeRandomOrdering(n)
vec = zeros(1, numel(n));
flags = zeros(1, numel(n));
index = 1;
while (sum(flags) ~= numel(n))
pos = randi(numel(n));
if (flags(pos) ~= 1)
vec(index) = n(pos);
index = index + 1;
flags(pos) = 1;
end
end
end

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Problem 641. Make a random, non-repeating vector.

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Problem 641. Make a random, non-repeating vector.

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Last 200 Solutions

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Problem Recent Solvers1728

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