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

Created by Doug Hull

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6671 Solutions
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Last Solution submitted on Jan 24, 2022

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Solution 6811235

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Josh Klueber on 2 Nov 2021

nice!

Solution 5671665

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john perkins on 4 May 2021

good problem

Isabella Stellitano on 3 Nov 2021

good problem

Solution 5420650

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TIMOTHY PIERGIOVANNI on 21 Apr 2021

randperm(n);

Solution 3205506

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Muhammad Akmal Afibuddin Putra on 14 Oct 2020

thanks for the clue at description

Solution 2586403

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Piero Cimule on 20 Jun 2020

vec = randperm(n);

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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