How to check # occurrences in nested arrays using recursion? (JS)
I have an array with an unknown amount of nested arrays. I have a number that I am looking for N, and a number to see if it is present K amount of times. I need to use recursion to…
Get flatten 2d array from a multidimensional array with parent-child relationships and inconsistent scalar data – Php
I have a multidimensional array with parent-child relationships and I want to flatten its data into a 2d array of the scalar data from each level using recursion. [ 'children' => [ [ 'id' => 123, 'title' => 'test', 'children'…
Visual Studio Code – computing pi using recursion. Why didn't this program work?
EDIT: it seems that this code snippet works, but in visual studio it doesn't work, i don't know why this program takes a command line argument "c" and it has to approximate pi using the recursive formula, #include <stdio.h> #include…
How can I convert an array to a binary tree with JavaScript?
I need a refresher on traversing trees. I'm about to start interviewing, and tech interviewers LOVE to give binary tree questions. This one is a practice question from Hired.com. (I wouldn't dare ask for this on an actual interview question…
How is it that a parameter reverts to its previous value after returning from a recursive function call? – Javascript
I am relatively new to JavaScript and i can't wrap around my head on how this code is executing function foo(i) { if (i < 0) { return; } console.log(`begin: ${i}`); foo(i - 1); console.log(`end: ${i}`); } foo(3); the output…
recursing filter array js – Javascript
i have array: [ {id: 1, name: 'Parent1'}, {id: 2, name: 'Child1', parent: {id: 1, name: 'Parent1'}}, {id: 3, name: 'Child2', parent: {id: 1, name: 'Parent1'}}, {id: 4, name: 'GrandChild1', parent: {id: 3, name: 'Child2'}}, {id: 5, name: 'GrandChild2', parent:…
Checking equality of two strings is not working properly in javascript
function playerSelection() { let choice = prompt("Enter you choice."); while(choice != "rock" && choice != "paper" && choice != "scissor"){ alert("Wrong entry"); playerSelection(); } return choice; } This code works just fine until you enter a string that makes the…
How to build a string with tags through nested class? – Html
Could you please help me to build a html document by nested classes? My main aim is to build a string with html markup like this <html> <div> <p>123</p> <div> <div> 123 <a>123</a> </div> </div> </div> </html> I have a…
Recursive ArrayPush in Javascript to get all combination
var Combination = []; function Reduce(List, Target) { if(List.length > 1) { return Reduce(List.filter(word => word !== List[0]), List[1]); } else { return List[0]; } } If user input X = ["AB, "DE", "SZ", "YY"], above function have to return…
check childId match with parentId or not in js – Javascript
Here I have created a function that will compile whether an object's parentid matches its childId or not, so id 1 is a parent Id that has a child with 11,12, so if I call that function checkParentId(obj, 1, 12),…