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Problem 951. Unique: Faster for options 'rows' and 'stable' for large array of uint8

Solution 1822994

Submitted on 22 May 2019 by James
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Test Suite

Test Status Code Input and Output
1   Pass
feval(@assignin,'caller','score',0);
2   Pass
% Warm-Up Calls c=randi(4,1000,16,'uint8')-1; out = unique_rows_stable_fast(c); out = unique_rows_stable_fast(c); out = unique_rows_stable_fast(c);
3   Pass
c=randi(4,6000000,16,'uint8')-1; ta=clock; out = unique_rows_stable_fast(c); t1=etime(clock,ta)*1000; fprintf('Elapsed time = %.0f msec\n',t1) assert(isequal(unique(c,'rows','stable'),out)) t2=min(20000,t1); % unique scores 20000 msec feval(@assignin,'caller','score',floor(t2));

Elapsed time = 7015 msec

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