The Overlapping Rectangles using CSS and Javascript
Make three rectangles as shown in the above figure. Clicking on any rectangle should alert the name of the rectangle. Three Rectangles in HTML Div Containers The Three rectangles …
How to Count the Distinct Pairs using HashMap?
Given an array of integers and a target value, find the number of distinct pairs that sum to the target. The pairs (x,y) and (x’, y’) where x smaller …
Comparing Left and Right Branch of a Complete Binary Tree
A complete binary tree is a binary tree that each level except possibiliy the last level, is completed filled. Suppose you are giving a binary tree represented as an …
How to Find Words That Can Be Formed by Characters?
You are given an array of strings words and a string chars. A string is good if it can be formed by characters from chars (each character can only …
How to Compute the Maximum Difference Between Node and Ancestor?
Given the root of a binary tree, find the maximum value V for which there exists different nodes A and B where V = |A.val – B.val| and A …
How to Compute the Day of the Year?
Given a string date representing a Gregorian calendar date formatted as YYYY-MM-DD, return the day number of the year. Example 1: Input: date = “2019-01-09” Output: 9 Explanation: Given …