Cody

# Problem 42672. longest sequence of nans

Solution 2080590

Submitted on 5 Jan 2020 by Asif Newaz
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### Test Suite

Test Status Code Input and Output
1   Pass
x = [ 2 3 1 2 5 6; nan nan 5 nan 6 -9; 5 nan 8 nan 6 5; 8 nan 7 -5 5.8 5; nan 0 0 nan 5 7; nan 5 9 nan 7 nan; nan nan 10 0 nan 6; nan nan 0 1 nan 9]; y_correct = [ 4 3 0 2 2 1]; assert(isequal(longnan(x),y_correct));

y = 8×6 logical array 0 0 0 0 0 0 1 1 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 1 1 1 0 0 1 0 1 1 0 0 1 0 y1 = 0 0 0 0 0 0 1 1 0 1 0 0 0 1 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 1 1 1 0 0 1 0 1 1 0 0 1 0 a = 8 b = 6

2   Pass
x = eye(3); y_correct = [0 0 0]; assert(isequal(longnan(x),y_correct));

y = 3×3 logical array 0 0 0 0 0 0 0 0 0 y1 = 0 0 0 0 0 0 0 0 0 a = 3 b = 3

3   Pass
x = eye(3); x(1,1) = nan; y_correct = [1 0 0]; assert(isequal(longnan(x),y_correct));

y = 3×3 logical array 1 0 0 0 0 0 0 0 0 y1 = 1 0 0 0 0 0 0 0 0 a = 3 b = 3

4   Pass
x = [30 39 NaN 1 10 NaN 28 38 47 NaN 9 18 27 NaN 46 NaN NaN 17 NaN NaN 37 5 NaN NaN 25 NaN 36 NaN 13 15 NaN 33 NaN NaN NaN 21 NaN 32 41 43 3 NaN 22 31 NaN 49 2 NaN NaN]; y_correct = [0 2 5 0 3 1 4]; assert(isequal(longnan(x),y_correct));

y = 7×7 logical array 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 0 1 1 y1 = 0 0 1 0 0 1 0 0 0 1 0 0 0 1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 0 0 1 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 0 1 1 a = 7 b = 7

5   Pass
x = nan(10); y_correct = repmat(10,1,10); assert(isequal(longnan(x),y_correct));

y = 10×10 logical array 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 y1 = 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 a = 10 b = 10