title: How to filter list of lists using streams on the basis of a value in a list?
body: <p>I have a <code>List&lt;List&lt;Double&gt;&gt;</code>. I want to filter rows on the basis of an index i.e. if value of an element at index 4 is less than 0.2 then, skip that row? The resultant <code>List&lt;List&lt;Double&gt;&gt;</code> should be smaller or same as the input one. </p>