Yes, Radix Sort and Counting Sort are O(N). They are NOT comparison-based sorts, which have been proven to have Ω(N log N) lower bound. To be precise, Radix Sort is O(kN), where k is the number of digits in the values to be sorted. Counting Sort is O(N + k), where k is the range … Read more
This link explains how to print to the screen in a MIPS simulator like QTSPIM or MARS. As for the code, there were a few bugs. The line li $a0, 0 is overwriting the work done by the initial la $a0, Array instruction because the li is setting the base address of your array to 0. Instead, you should move the la instruction into the loop so … Read more
First sort the keys by the associated value. Then get the values (e.g. by using a hash slice). Or if you have a hash reference.
Move them to an array, sort that array, and then use that array for your purposes. Here’s a solution: Once you have the array, you could rebuild the object from the array in the order you like, thus achieving exactly what you set out to do. That would work in all the browsers I know … Read more
For lists, we use the Collections.sort(List) method. What if we want to sort a HashSet?
Since Date implements Comparable, it has a compareTo method just like String does. So your custom Comparator could look like this: The compare() method must return an int, so you couldn’t directly return a boolean like you were planning to anyway. Your sorting code would be just about like you wrote: A slightly shorter way to write all this, if you don’t need to reuse your comparator, is to … Read more
You don’t really need all that much code: Supports whitespace in elements (as long as it’s not a newline), and works in Bash 3.x. e.g.: Note: @sorontar has pointed out that care is required if elements contain wildcards such as * or ?: The sorted=($(…)) part is using the “split and glob” operator. You should … Read more
Got it. I assumed it’d figure out that the > operator returned a bool (per documentation). But apparently it is not so.
What you want to do is actually again a groupby (on the result of the first groupby): sort and take the first three elements per group. Starting from the result of the first groupby: We group by the first level of the index: Then we want to sort (‘order’) each group and take the first … Read more