Cody

Problem 722. Make a run-length companion vector

Solution 190252

Submitted on 12 Jan 2013 by Claudio Gelmi
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Test Suite

Test Status Code Input and Output
1   Pass
%% x = [5 3 3 1 0 9 9 4 4 4 4 5 1 2 2]; r_correct = [1 1 2 1 1 1 2 1 2 3 4 1 1 1 2]; assert(isequal(run_length(x),r_correct))

indices = 3 7 9 10 11 15

2   Pass
%% x = ones(1,20); r_correct = 1:20; assert(isequal(run_length(x),r_correct))

indices = Columns 1 through 16 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Columns 17 through 19 18 19 20

3   Pass
%% x = [1 1 1 2 2 3 4 4 5 5 5]; r_correct = [1 2 3 1 2 1 1 2 1 2 3]; assert(isequal(run_length(x),r_correct))

indices = 2 3 5 8 10 11

4   Pass
%% x = 1:40; r_correct = ones(size(x)); assert(isequal(run_length(x),r_correct))

indices = Empty matrix: 1-by-0

5   Pass
%% x = [-34 -17*ones(1,100)]; r_correct = [1 1:100]; assert(isequal(run_length(x),r_correct))

indices = Columns 1 through 16 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Columns 17 through 32 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Columns 33 through 48 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Columns 49 through 64 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 Columns 65 through 80 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 Columns 81 through 96 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 Columns 97 through 99 99 100 101