39. Combination Sum Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. You may return the combinations in any order. The same number may be chosen from candidates an unlimited number…

21. Merge Two Sorted Lists Merge two sorted linked lists and return it as a sorted list. The list should be made by splicing together the nodes of the first two lists. Example 1: Input: l1 = [1,2,4], l2 = [1,3,4] Output: [1,1,2,3,4,4] Example 2: Input: l1 = [], l2…

360. Sort Transformed Array Given a sorted integer array nums and three integers a, b and c, apply a quadratic function of the form f(x) = ax2 + bx + c to each element nums[i] in the array, and return the array in a sorted order. Example 1: Input: nums…

1196. How Many Apples Can You Put into the Basket You have some apples, where arr[i] is the weight of the i-th apple. You also have a basket that can carry up to 5000 units of weight. Return the maximum number of apples you can put in the basket. Example…

Nested Lists Given the names and grades for each student in a class of students N, store them in a nested list and print the name(s) of any student(s) having the second lowest grade. Note: If there are multiple students with the second lowest grade, order their names alphabetically and print each…

262. Trips and Users Table: Trips +-------------+----------+ | Column Name | Type | +-------------+----------+ | Id | int | | Client_Id | int | | Driver_Id | int…

An extra day is added to the calendar almost every four years as February 29, and the day is called a leap day. It corrects the calendar for the fact that our planet takes approximately 365.25 days to orbit the sun. A leap year contains a leap day. In the…