Problem 42481. Low level NaN

Created by Mehmet OZC

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I have a dataset. Columns represents different variables.
A variable may start with NaN or any double type number.
If it starts with double number it continues with double type numbers.
If it starts with NaN, we do not know when it ends.
Return the row index where last NaN is observed in overall dataset. (Think column-wise)

Input

[ 1 NaN 5 NaN 2

2 NaN 4 4 8

6 NaN 8 2 4

0 0 0 0]

should return 3 because last NaN is observed in third row.

Test suite may be changed!

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41 Solutions
33 Solvers

Last Solution submitted on Jul 11, 2020

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2 Comments

2 Comments

Alfonso Nieto-Castanon on 31 Jul 2015

there seem to be some problems with the testsuite, in particular some of those matrices contain different number of elements per row (e.g. perhaps "5,7" should be "5.7"). I guess the same applies to your example dataset where the last row contains only four numbers instead of five?

Mehmet OZC on 1 Aug 2015

I have fixed test suite.

Solution Comments

Solution 709182

1 Comment

1 Comment

Nimit Dhulekar on 31 Jul 2015

The test sets 2,3,5, and 6 have a problem with x. It should probably read 5.7 and not 5,7

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Problem 42481. Low level NaN

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Problem 42481. Low level NaN

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