Cody

Problem 40. Reverse Run-Length Encoder

Solution 206078

Submitted on 19 Feb 2013
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Test Suite

Test Status Code Input and Output
1   Fail
%% x = [2 5 1 2 4 1 1 3]; correct = [5 5 2 1 1 1 1 3]; assert(isequal(correct, RevCountSeq(x)));

Error: Evaluation of ' y=[];while ~isempty(x);y=[y repmat(x(2),1,x(1))]; x(1:2)=[];end;end;' failed: Error using RevCountSeq (line 2) Error: Illegal use of reserved keyword "end".

2   Fail
%% x = [1 9]; correct = [9]; assert(isequal(correct, RevCountSeq(x)));

Error: Evaluation of ' y=[];while ~isempty(x);y=[y repmat(x(2),1,x(1))]; x(1:2)=[];end;end;' failed: Error using RevCountSeq (line 2) Error: Illegal use of reserved keyword "end".

3   Fail
%% x = [9 1]; correct = ones(1,9); assert(isequal(correct, RevCountSeq(x)));

Error: Evaluation of ' y=[];while ~isempty(x);y=[y repmat(x(2),1,x(1))]; x(1:2)=[];end;end;' failed: Error using RevCountSeq (line 2) Error: Illegal use of reserved keyword "end".

4   Fail
%% x = [1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9]; correct = 1:9; assert(isequal(correct, RevCountSeq(x)));

Error: Evaluation of ' y=[];while ~isempty(x);y=[y repmat(x(2),1,x(1))]; x(1:2)=[];end;end;' failed: Error using RevCountSeq (line 2) Error: Illegal use of reserved keyword "end".