Cody

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

Solution 875054

Submitted on 15 Apr 2016 by Kirsten Findlay
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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))

x = 0 NaN 1 2 NaN 17 3 -4 NaN a = 0 1 0 0 1 0 0 0 1 b = 2 x = 0 0 1 2 NaN 17 3 -4 NaN a = 0 0 0 0 1 0 0 0 1 b = 5 x = 0 0 1 2 2 17 3 -4 NaN a = 0 0 0 0 0 0 0 0 1 b = 9 x = 0 0 1 2 2 17 3 -4 -4 x = 0 1 2 2 17 3 -4 -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))

x = 0 NaN 1 2 NaN NaN 17 3 -4 NaN a = 0 1 0 0 1 1 0 0 0 1 b = 2 x = 0 0 1 2 NaN NaN 17 3 -4 NaN a = 0 0 0 0 1 1 0 0 0 1 b = 5 x = 0 0 1 2 2 NaN 17 3 -4 NaN a = 0 0 0 0 0 1 0 0 0 1 b = 6 x = 0 0 1 2 2 2 17 3 -4 NaN a = 0 0 0 0 0 0 0 0 0 1 b = 10 x = 0 0 1 2 2 2 17 3 -4 -4 x = 0 1 2 2 2 17 3 -4 -4

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

x = 0 NaN NaN NaN NaN a = 0 1 1 1 1 b = 2 x = 0 0 NaN NaN NaN a = 0 0 1 1 1 b = 3 x = 0 0 0 NaN NaN a = 0 0 0 1 1 b = 4 x = 0 0 0 0 NaN a = 0 0 0 0 1 b = 5 x = 0 0 0 0 0 x = 0 0 0 0

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

x = 0 1 2 3 4 5 6 7 8 9 10 NaN a = 0 0 0 0 0 0 0 0 0 0 0 1 b = 12 x = 0 1 2 3 4 5 6 7 8 9 10 10 x = 1 2 3 4 5 6 7 8 9 10 10