You are given an integer array nums. The unique elements of an array are the elements that appear ex...

You are working in a ball factory where you have n balls numbered from lowLimit up to highLimit incl...

You are given a string time in the form of hh:mm, where some of the digits in the string are hidden ...

There is a biker going on a road trip. The road trip consists of n + 1 points at different altitudes...

You are given an array rectangles where rectangles[i] = [li, wi] represents the ith rectangle of len...

There is a hidden integer array arr that consists of n non-negative integers. It was encoded into an...

Hercy wants to save money for his first car. He puts money in the Leetcode bank every day. He starts...

You are assigned to put some amount of boxes onto one truck. You are given a 2D array boxTypes, wher...

You are given a string s of even length. Split this string into two halves of equal lengths, and let...

The school cafeteria offers circular and square sandwiches at lunch break, referred to by numbers 0 ...