Since this question is still getting a lot of attention, I decided to answer it by copying this answer from Code Review.SE: You’re following the same philosophy as the bubble sort, which is very, very, very slow. Have you tried this?: Sort your unordered array with quicksort. Quicksort is much faster than bubble sort (I know, you … Read more
You’ve got it, just keep going! And be careful with the indexes… To simplify a bit I’ll assume that N and M are > k, so the complexity here is O(log k), which is O(log N + log M). Pseudo-code: For the demonstration you can use the loop invariant i + j = k, but … Read more
In C arguments are passed by values. For example if you have an integer varaible in main and the following function then if you call the function in main like this then the parameter gets the value of variable x in main. However the parameter itself occupies a different extent in memory than the argument. So any … Read more
I have searched for a similar question here, but surprisingly could not find any. In GNU bash, there is (a construct? a structure? a data type?) called “arrays“. Arrays are well documented in the bash documentation, so I think that I understand the basics. But suddenly, in the documentation there also comes up the term … Read more
The rules of C says that you can’t initialize an array using a pointer. Instead define the array then copy to it: Then you can not define empty arrays. An array must have a size. And using the array newArr in the main function is wrong anyway since the function you call returns a pointer. So newArr must be a pointer as … Read more
There is no shortcut for converting from int[] to List<Integer> as Arrays.asList does not deal with boxing and will just create a List<int[]> which is not what you want. You have to make a utility method.
The error is here: You are passing the first item of words, instead of the array. Instead, pass the array to the function: Problem solved! Here’s a breakdown of what the problem was: I’m guessing in your browser (chrome throws a different error), words[] == words[0], so when you call hasLetter(“a”,words[]);, you are actually calling hasLetter(“a”,words[0]);. So, in essence, … Read more
If you use numpy, this is easy: or if you want the 0’s, You’ll get the same result. *note that slice is actually the name of a builtin-type. Generally, I would advise giving your object a different “name”. Another way, if you’re working with lists of lists*: (Note that the 0’s here are unnecessary: [arr[i][:2] for i in range(2)] would … Read more