The for loop will ask i to iterate over the values of an iterable, and you’re providing a single int instead of an iterable object You should iterate over range(0,len(highscores)): or better, iterate directly over the array
I am assuming you are talking about Java here. So the loop will cost O(n) time, my question is that will Arrays.sort() cost more time? Yes, Arrays.sort(int[]) in all Java standard library implementations that I know, is an example of a comparison-based sort and thus must have worst-case complexity Ω(n log n). In particular, Oracle Java 7 uses … Read more
Using Commons Lang (to convert) + Collections (to min/max) Note that Arrays.asList() wraps the underlying array, so it should not be too memory intensive and it should not perform a copy on the elements of the array.
You cannot make an empty array and then let it grow dynamically whenever the user enters a number in the command line. You should read the numbers and put them in an ArrayList instead. An ArrayList does not require a initial size and does grow dynamically. Something like this: Ofcourse you won’t use while(true)and you won’t … Read more
Local arrays are created on the stack, and have automatic storage duration — you don’t need to manually manage memory, but they get destroyed when the function they’re in ends. They necessarily have a fixed size: Arrays created with operator new[] have dynamic storage duration and are stored on the heap (technically the “free store”). They can … Read more
append() creates a new array which can be the old array with the appended element. I think it’s more normal to use the proper method for adding an element:
First, array_length should be an integer and not a string: Second, your for loop should be constructed using range: Third, i will increment automatically, so delete the following line: Note, one could also just zip the two lists given that they have the same length:
You can use concat to merge arrays: Run code snippetExpand snippet Using the apply method of concat will just take the second parameter as an array, so the last line is identical to this: There is also the Array.prototype.flat() method (introduced in ES2019) which you could use to flatten the arrays, although it is only available in Node.js starting with version 11, and not … Read more
Use numpy.delete() – returns a new array with sub-arrays along an axis deleted For your specific question: Note that numpy.delete() returns a new array since array scalars are immutable, similar to strings in Python, so each time a change is made to it, a new object is created. I.e., to quote the delete() docs: “A copy of arr with the elements specified by obj removed. Note that delete … Read more
A different way to return an empty array is to use a constant as all empty arrays of a given type are the same.