You are given an integer array nums. Two players, Player 1 and Player 2, take turns to pick numbers from either end of the array. Each player adds the selected number to their score. The goal is to determine if Player 1 can win the game. Player 1 wins if they have a higher score or if the scores are tied.
You are given an integer array nums and an integer target. You must build an expression by adding ‘+’ or ‘-’ before each element in nums and concatenate them to form an expression. Return the number of different expressions that result in the target value.
You are given an array of non-overlapping axis-aligned rectangles. Each rectangle is represented by its bottom-left and top-right corner. Your task is to design a system that can pick a random integer point from the space covered by one of the given rectangles. A point on the perimeter of a rectangle is considered inside the rectangle.
You are given an m x n matrix. The task is to return an array that contains all the elements of the matrix in diagonal order, starting from the top-left and moving diagonally towards the bottom-right. The diagonal order alternates between upward and downward diagonals.
Given an array of strings strs, determine the length of the longest uncommon subsequence between them. An uncommon subsequence is a string that is a subsequence of one string but not the others. If no such subsequence exists, return -1.
