You are given a sentence consisting of words separated by spaces. You must transform it into Goat Latin according to these rules: For each word in order: Example: Another example: Problem Understanding Important details: Logic Explained in Simple English Here’s the simplest way to think about this transformation: Why this works: Step-by-Step Approach Java Implementation…

You are given two integers: Your task: Return all non-negative integers of length n such that: Example: Another example: Problem Understanding We must generate numbers with: Important details: This is a number construction problem, not a checking problem. Logic Explained in Simple English A simple way to think about building valid numbers: This naturally suggests…

You are given: Candies must be distributed in this repeating pattern: 1st person gets 1 candy2nd person gets 2 candies3rd person gets 3 candies… and so on When reaching the last person, distribution continues again from the first person, increasing the next giveaway amount each time. If candies run out, give the remaining amount to…

This is a challenging problem involving topological sorting, grouping, and dependency ordering. You are given: If no valid ordering exists, return an empty list. Example: Problem Understanding Key details: So ordering constraints exist at two levels: 1. Between groups If any item in group A depends on an item in group B,then group B must…

You are given an array where each element represents the price of a stock on a given day. Your task: Find the maximum profit achievable with at most TWO buy-and-sell transactions. Rules: Example: Problem Understanding This is an extension of earlier stock problems: Problem Allowed Transactions 121 1 transaction 122 unlimited 123 at most 2…

You are given an array of intervals where each interval has a start and end value. Your task is: Remove the minimum number of intervals so that the remaining intervals do not overlap. Return the minimum number of intervals that must be removed. Example: Another example: Problem Understanding Two intervals overlap if: We want the…

Given a string containing uppercase and lowercase characters, you must determine the length of the longest palindrome that can be formed using the characters in the string. Examples: Problem Understanding A palindrome reads the same forward and backward. To build the longest possible palindrome: So the key question becomes: How many characters can we pair,…

This problem asks you to design a data structure that generates combinations of characters from a given string, in lexicographical order, one at a time, through two methods: You must implement: Example: Problem Understanding Given: You must: Important notes: Logic Explained in Simple English To solve this problem cleanly, think about it like this: Why…

This problem asks you to return a specific row of Pascal’s Triangle, indexed starting from 0. Examples: Problem Understanding Pascal’s Triangle is built with these rules: Example rows: But in this problem, you must return only the requested row, not the entire triangle. Logic Explained in Simple English There are two main ways to build…

You are given an array where each element represents the number of citations a researcher has received for each of their papers. The goal is to compute the H-Index. The H-Index is defined as: A researcher has an H-index of h if h of their papers have at least h citations each, and the remaining…