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General Midterm Questions about CSNS code

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lmann2 Posts: 156	Posted 20:46 Feb 15, 2015 \| I have two questions so far: 1)I don't know if this is the appropriate topic for this question, but why did you use a hashSet to store question choices for class ChoiceQuestion? I assume it has something to do with AnswerIndex (column section_index), but I don't quite see it. 2) I noticed this custom tag popping up in many of the jsp, is it important for the midterm? <csns:help name="txtlength" img="false">Text Length</csns:help>:
cysun Posts: 2935	Posted 21:34 Feb 15, 2015 \| 1. A List is used to store the choices. The HashSet is to store the correct solutions. A HashSet allows us to check whether a selection is correct in constant time. 2. No, custom tags are not important.

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lmann2

Posts: 156

Posted 20:46 Feb 15, 2015 |

I have two questions so far:

1)I don't know if this is the appropriate topic for this question, but why did you use a hashSet to store question choices for class ChoiceQuestion? I assume it has something to do with AnswerIndex (column section_index), but I don't quite see it.

2) I noticed this custom tag popping up in many of the jsp, is it important for the midterm?

<csns:help name="txtlength" img="false">Text Length</csns:help>:

cysun

Posts: 2935

Posted 21:34 Feb 15, 2015 |

1. A List is used to store the choices. The HashSet is to store the correct solutions. A HashSet allows us to check whether a selection is correct in constant time.

2. No, custom tags are not important.