I have been searching around. Many people have asked similar questions, like "How to list all the permutations of a string". However, all these answers are just listing out the possible character arrangements in the string like permuter(givenArray) or permuter(givenString)…
In javascript, I want to have a function with this declaration: function sumOfTwoItemExist(arr:number[],total:number)=>boolean the first parameter would be an array of numbers and the 2nd would be a number, now I want to return true if the sum of any…
I have a database where the routes table contains only fromstationid and tostationid. What I need to find is the shortest path to go from station Number 2 to station Number 6. Note: I can't make any changes to database…
Background I'm providing a map-based search for paddle boards, including searching by date - think "check in" / "check out" dates in a hotel search, where only hotels available for that entire date range are included in the results. I…
I'm trying to draw visual representation of sorting algorithms. Bubble Sort is working fine, but Selection Sort don't care about how much time I put in the setInterval timer, he runs on the same speed no matter what (until I…
Array.prototype.myFilter = function (callback) { const newArray = []; // Only change code below this line for (let i = 0; i < this.length; i++) { if (callback(this[i], i, this) == true) { newArray.push(this[i]); } } //This function works like…
I'm trying to understand a specific pattern where each term is the sum of the previous term and the current Fibonacci number. The pattern follows this sequence: 1 1 + 1 = 2 1 + 1 + 2 = 4…
I am working on a circular carousel. Given an array of n items, n>6 in my case, i want to calculate all the items within the array that are less than or equal to 3 positions away from a particular…
Let's say I have an array as follows: [100,2,3,4,200,35,42,300,4,4,4,6,7,400,2] And I want to create a map, like so: { { key: 100, value: 2 }, { key: 100, value: 3 } { key: 100, value: 4 }, { key: 200,…
I have 12 bytes saved as 24 HEX chars array, for example: "0123456789abcdef12345678" and I must storage this hex string as a lot of double variables (in time-series database). Yes, this is crazy, but in SaaS aplications, time to time…