Suppose, we have a grid of dimensions h x w. The grid is represented in a 2D array called ‘initGrid’, where each cell in the grid is either represented by a '#' or a '.'. '#' means that the grid contains an obstacle and '.' means that there is a ... Read More

Suppose, we have a n x n matrix. Each element in the matrix is unique and is an integer number between 1 and n2. Now we can perform the operations below in any amount and any order.We pick any two integers x and y that are in the matrix, where ... Read More

Suppose, we are given a grid of dimensions h x w. Each cell in the grid contains some positive integer number. Now there is a path-finding robot placed on a particular cell (p, q) (where p is the row number and q is the column number of a cell) and ... Read More

Suppose, we are making a cleaning robot that works on a grid. The grid is of dimensions h x w. There are m dirty cells that need to be cleaned that are given in an array of integer pairs 'dirt'. The cleaning robot, if placed in a particular cell; can ... Read More

Suppose we have a value n, we have to find the number of pairs (a, b) [a < b], that exist such that the equation a*x + b*y = n, has at least one solution.So, if the input is like n = 4, then the output will be 2 because ... Read More

Suppose we have a number n. We have to find smallest number m, such that factorial of m has at least n number of 0s.So, if the input is like n = 2, then the output will be 10 because 10! = 3628800 and 9! = 362880, minimum number with ... Read More

Suppose we have k number of candies. We have to distribute them among children. Now there are some rulesith child will get i^2 number of candiesany children at index i will not get any candy until all children from index 1 to i-i are servedIf ith children does not get ... Read More

Suppose we have two numbers n and m. We have to find the remainder after dividing n number of 1s by m.So, if the input is like n = 4 m = 27, then the output will be 4, because 1111 mod 27 = 4.To solve this, we will follow ... Read More

Suppose we have a number n and another value k, consider we have an array A with first N natural numbers, we have to find the total number of pairs of elements A[i] and A[j] from A, such that, i < j and their sum is divisible by k.So, if ... Read More

Suppose we have two long integer values maximum and minimum. We have to find a common fraction n/d such that min