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Posts tagged data-structures
C prohibits accessing an array out of bounds even if measures were taken to ensure that what should lie outside those bounds were known: struct MyStruct { int x[2]; int y, z; }; static...
One way to remove element from array is to replace element with zero. Below is a rough snippet I am sharing: int N = sc.nextInt(); int pos = sc.nextInt(); int A[] = new int[N]; if(pos == i) { ...
I need to do a lot of calculations involving sets. There are relatively few values in the "universe" of candidates that could appear in any of the sets, but potentially very many such sets (they mi...
When using the Array.prototype.sort method, we can pass a compare function as argument. Then, this function can be used to process array's elements, so the comparison is made using some custom crit...
Suppose we have N points on XY plane, ie. (x, y) and x, y are integers and multiple queries where each query is of the form y = mx + c and m, c are integers. Is it possible to count number of poin...
I learned about the ** operator for array-repeat, and I love it. I have a struct that contains a 2-d array of inner structs, like const D1 = 30; const D2 = 40; const Inner = struct { .a: u32, ....
To get a value from an assoc and provide a default value if the value does not exist, I am using the following definition: :: at-def ( key assoc default -- value ) key assoc ?at [ drop default ] w...
I'm attempting a question to do with data structures, file streams & linked lists. The code isn't complete yet as I am still halfway working on it. I am required to use data structures in the d...
So I just started learning how to use file-streams in C & decided to attempt a question which is to do with library management in C, however I am currently encountering some problems and feel l...
Let's consider the following code: const char a[][4] = {"aa", "aaa"}; const char *b[] = {"bb", "bbb"}; const char *const c[] = {"cc", "ccc"}; For shared libraries, both b and c arrays require...
A watertight mesh is one which does not have holes, and for which each face has a designated inside and outside. Such a mesh can be "tetrahedralized", has a defined volume, and can be an operand in...
I am trying to understand this code: const iframes = iFrameResize( [{options}], [css selector] || [iframe] ); The code can be found in this documentation. Is [{options}] an array of objects an...
Credit for User:Meriton for developing the following code (first published here). function replaceIn(e) { if (e.nodeType == Node.TEXT_NODE) { e.nodeValue = e.nodeValue.replaceAll("a", "");...
I've written a class that allows to access dictionary entries of arbitrary dicts with appropriate string keys through attribute access syntax on an instance of the class. My questions are: Is...
I was trying to initialize a simple two dimensional array as follows: const arrays = Array(3).fill([]); However, when I tried to push an entry into one of the arrays, it seems like it gets push...
I have an array friends = Array.new friends[0] = "Mad man" friends[1] = "hey" There's two ways to print it (using print or puts). At first I tried print print friends which gave: ["Mad...
Suppose I am using a Java API from Kotlin and I want to call a function that takes a FloatArray (represented as float[] in Java), and I have an Iterable<Float> as my input data type. To be mo...
Could someone explain this part of the coding for data structures & linked list? I actually got this code from a textbook but no matter how I read the textbook, I still don't get the concept &a...
I would like to delete a book from the collection by a particular title from my library if the user enters 2 as input for my switch statement. How can I do that with my current code? #include<...
I have a map and a new item to add to the map and a list of keys I want to attach the new item to: => m1 {:a 1 :b 2} => itm 3 => ks [:c :d :e] => m2 {:a 1 :b 2 :c 3 :d 3 :e 3} ...
If I have a one-dimensional array, I can get the length of it quite easily: var x = moves.Length(). However, if the array is multi-dimensional, .Length() returns the total number of elements. If ...
This is the worst bug I have ever seen.. I was fetching CallLogs following way. ArrayList<HashMap<String, String>> callLog= new ArrayList<>(); HashMap<String, Strin...
I wish to fill an array with strings, using Bash scripting. The strings are in a file, one per line. Here is what I've tried: declare -a my_array=() while read line; do my_array+=( "$line"...
No, I'm not trying to get the full program written completely in C by you guys. I only need some way to implement the functionalities of each function I found confusing. In this challenge in Code ...
I understand data compression as making data structures nearer (if they are mere machine code without any abstract representation) or representing them in less and less abstract computer languages ...
In Dyalog APL, there's a predefined function in the dfns library to generate a matrix of permutations for a list of the numbers from 1 to n. I want to create the same functionality, except that it...
For holding ordered sets of keys, there are well-known data structures (the red-black tree, for example) that support O(log(n)) lookup and insertion algorithms. Of course this means that there triv...
