Cody

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

Solution 2100134

Submitted on 20 Jan 2020
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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))

n = 8 y = 0 0 0 0 0 0 0 0 y = 0 0 0 0 0 0 0 0 y = 0 1 0 0 0 0 0 0 y = 0 1 2 0 0 0 0 0 y = 0 1 2 2 0 0 0 0 y = 0 1 2 2 17 0 0 0 y = 0 1 2 2 17 3 0 0 y = 0 1 2 2 17 3 -4 0 y = 0 1 2 2 17 3 -4 -4

2   Fail
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))

n = 9 y = 0 0 0 0 0 0 0 0 0 y = 0 0 0 0 0 0 0 0 0 y = 0 1 0 0 0 0 0 0 0 y = 0 1 2 0 0 0 0 0 0 y = 0 1 2 2 0 0 0 0 0 y = 0 1 2 2 NaN 0 0 0 0 y = 0 1 2 2 NaN 17 0 0 0 y = 0 1 2 2 NaN 17 3 0 0 y = 0 1 2 2 NaN 17 3 -4 0 y = 0 1 2 2 NaN 17 3 -4 -4

Assertion failed.

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

n = 4 y = 0 0 0 0 y = 0 0 0 0 y = 0 NaN 0 0 y = 0 NaN NaN 0 y = 0 NaN NaN NaN

Assertion failed.

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

n = 11 y = 0 0 0 0 0 0 0 0 0 0 0 y = 1 0 0 0 0 0 0 0 0 0 0 y = 1 2 0 0 0 0 0 0 0 0 0 y = 1 2 3 0 0 0 0 0 0 0 0 y = 1 2 3 4 0 0 0 0 0 0 0 y = 1 2 3 4 5 0 0 0 0 0 0 y = 1 2 3 4 5 6 0 0 0 0 0 y = 1 2 3 4 5 6 7 0 0 0 0 y = 1 2 3 4 5 6 7 8 0 0 0 y = 1 2 3 4 5 6 7 8 9 0 0 y = 1 2 3 4 5 6 7 8 9 10 0 y = 1 2 3 4 5 6 7 8 9 10 10