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Problem 73. Replace NaNs with the number that appears to its left in the row.

Solution 254470

Submitted on 5 Jun 2013 by Krzysztof
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Test Suite

Test Status Code Input and Output
1   Pass
%% x = [NaN 1 2 NaN 17 3 -4 NaN]; y_correct = [0 1 2 2 17 3 -4 -4]; assert(isequal(replace_nans(x),y_correct))

y = 0 1 2 NaN 17 3 -4 NaN poprz = 0 poprz = 1 poprz = 2 y = 0 1 2 2 17 3 -4 NaN poprz = 2 poprz = 17 poprz = 3 poprz = -4 y = 0 1 2 2 17 3 -4 -4 poprz = -4

2   Pass
%% x = [NaN 1 2 NaN NaN 17 3 -4 NaN]; y_correct = [ 0 1 2 2 2 17 3 -4 -4]; assert(isequal(replace_nans(x),y_correct))

y = 0 1 2 NaN NaN 17 3 -4 NaN poprz = 0 poprz = 1 poprz = 2 y = 0 1 2 2 NaN 17 3 -4 NaN poprz = 2 y = 0 1 2 2 2 17 3 -4 NaN poprz = 2 poprz = 17 poprz = 3 poprz = -4 y = 0 1 2 2 2 17 3 -4 -4 poprz = -4

3   Pass
%% x = [NaN NaN NaN NaN]; y_correct = [ 0 0 0 0]; assert(isequal(replace_nans(x),y_correct))

y = 0 NaN NaN NaN poprz = 0 y = 0 0 NaN NaN poprz = 0 y = 0 0 0 NaN poprz = 0 y = 0 0 0 0 poprz = 0

4   Pass
%% x = [1:10 NaN]; y_correct = [ 1:10 10]; assert(isequal(replace_nans(x),y_correct))

poprz = 1 poprz = 2 poprz = 3 poprz = 4 poprz = 5 poprz = 6 poprz = 7 poprz = 8 poprz = 9 poprz = 10 y = 1 2 3 4 5 6 7 8 9 10 10 poprz = 10

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