For the problem Leetcode problem here, here's my solution in PHP. Most examples found are Python and so much shorter using Sets. The question itself has not target space or time complexity and my question is if there is a…
I'm doing Leetcode Question Number 49.. I entered this but it did not work. var groupAnagrams = function(strs) { if (strs.length <= 1) { return [strs] } const hashMap = {} for(let i = 0; i < strs.length; i++) {…
Here is the detail: Eg: [1,1,2,4] (init) -> gen1 [2,1,2,4] -> gen2 [4,1,2,4] -> gen3 [4,2,2,4] -> gen4 [4,4,2,4] -> gen5 (no change) -> gen6 [4,4,4,4] each generation: odd step: +1 or zero even step: +2 or zero in order…
Given the following test environment ... const nodeList = document.querySelectorAll('p'); const testArray = Array.from(nodeList); testArray.every(function (elmNode) { if (elmNode.classList.contains('ipsum')) { console.log( 'All element nodes do feature the `ipsum` css-class name.' ); } }); .lorem { font-family: courier new, courier; }…
I’m facing a cache invalidation problem in Redis, particularly with relational data. For example, I have a User object: { "id": 1, "name": "John" } And a UserClass object: { "user_id": 1, "class_id": 3 } I have an API that…
I try to make a function that returns an arrays of fib sequence up to Nth term. I've done this using iteration and returning n-th term alone with recursion but I can't understand how to save the terms in the…
So I'm working on this problem: Given the root of a binary tree, return the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in…
Using an Angular application which inserts 'ng-star-inserted' to every node element. I need to check if the target element class exists inside array var footerElementClassList = [ 'footer-links__link', 'social__link-icon', 'bottom__link', ]; const filtered = footerElementClassList.includes('bottom__link ng-star-inserted'); console.log(filtered); Tried below options…
I have text objects (text1, text2, etc) with formatting information (eg. [bold, italic]). Now I want to concat these texts and format them in HTML. For a simple case it would transform the following text1[bold,italic] text2[] text3[bold] into this HTML:…
I have JavaScript code that draws vertical bars and changes their color based on the average music frequency. I tried to change the color of each bar to match the color of the previous bar, but I got a different…