Suppose, we are given a grid that contains two types of cells; black cells, and white cells. The black cells are represented as '#' and the white cells are represented as '.'. The grid is given to us in an array of strings. Now, we have to perform the following.We ... Read More

Suppose, there is a building that has center coordinates xc, yc, and height h. We don't know the center coordinates of the building, but we are provided with n pieces of information that contain x and y coordinates and an altitude value a. The altitude of coordinates (x, y) is ... Read More

Suppose, we are given two integers n and m and there are k tuples of integers that contain four integer numbers {ai, bi, ci, di}. Four arrays a, b, c, d are given, and a[i] signifies the i-th tuple's a value. Now, let us consider a sequence dp that has ... Read More

Suppose n stations are connected by m tracks. The stations are named from 1 to n. The tracks are bidirectional, and we have to reach station dest from station src. Thes source and destination stations of the i-th railroad is given in the array 'roads' where roads[i] is of the ... Read More

Suppose, we are given a grid of dimensions h * w. The cells in the grid can contain either a bulb or obstacles. A light bulb cell illuminates the cells in its right, left, up, and down and the light can shine through the cells unless an obstacle cell blocks ... Read More

Suppose, we are given a grid of dimensions h * w. The cells in the grid can contain either bulbs or obstacles. A light bulb cell illuminates itself and the cells in its right, left, up, and down and the light can shine through the cells unless an obstacle cell ... Read More

Suppose, we are given an unweighted, undirected graph that contains n vertices and m edges. A bridge edge in a graph is an edge whose removal causes the graph to be disconnected. We have to find out the number of such graphs in a given graph. The graph does not ... Read More

Suppose, we are given n numbers in array nums. We have to choose a pair of two numbers from the array, and there is a condition that the difference of their positions in the array is equal to the sum of the two numbers. There can be a total of ... Read More

Suppose, we have n integers in an array nums. We have to find out if the numbers in the array are pairwise coprime, setwise coprime, or not coprime.Two numbers nums[i] and nums[j] are said to be pairwise coprime if gcd(nums[i], nums[j]) = 1. This should hold for every number pair ... Read More

Suppose, there are 2n number of letters and each of them has an integer number between 1 to n written on them. There are exactly two letters that have the same number written on them. These letters are arranged into m stacks and stack i has letters stack[i] on it. ... Read More