More Problems

• Given a string of lowercase letters, rearrange the characters so that adjacent characters are different and the string is lexicographically smallest.
• You are given a grid representing a city, where each cell has a number representing the cost to pass through. Find the minimum cost to travel from the top-left corner to the bottom-right corner of the grid.
• Given an array of integers, maximize the sum of selected elements such that no two selected elements are adjacent.
• You are given a list of people with weights and a boat with a maximum weight capacity. Find the minimum number of boat trips required to transport all people.
• Given an array of tasks and their completion times, find the minimum time required to complete all tasks using two processors where tasks are assigned greedily.
• You are given an array of integers representing the energy required to move between stones on a river. Find the minimum energy needed to reach the last stone.
• Given a list of buildings, each with a start and end time, find the maximum number of buildings that can be constructed without overlapping construction times.
• You are given a list of trains arriving and departing at a station. Find the maximum number of trains that can be accommodated on the station’s platforms without overlap.