Suppose we have a number n, we have to find the number of ways we can fill a (3 x n) block with 1 x 2 dominos. We can rotate the dominos when required. If the answer is very large then return this mod 10^9 + 7.So, if the input ... Read More

Suppose we have four numbers n, a, b, and c. We have to find the nth (0 indexed) term of the sorted sequence of numbers divisible by a, b or c.So, if the input is like n = 8 a = 3 b = 7 c = 9, then the ... Read More

Suppose we have a list of unique numbers called nums, so we have to find the largest subset such that every pair of elements in the subset like (i, j) satisfies either i % j = 0 or j % i = 0. So we have to find the size ... Read More

Suppose we have a list of words and another value k. We have to find the number of sublists in the given words such that there are exactly k different words.So, if the input is like words = ["Kolkata", "Delhi", "Delhi", "Kolkata"] k = 2, then the output will be ... Read More

Suppose we have a number and a list of edges. These n different nodes labeled as 0 to N. These nodes are forming a network. Each edge is in the form (a, b, t) of an undirected graph, this is representing if we try to send message from a to ... Read More

Suppose we have a list of words called dictionary and we have another two strings start and end. We want to reach from start to end by changing one character at a time and each resulting word should also be in the dictionary. Words are case-sensitive. So we have to ... Read More

Suppose we have an undirected graph we have to check whether we can find an odd length cycle inside it or not.So, if the input is like adj_list = [[1, 2], [0, 3, 4], [0, 3, 4], [1, 2, 4], [1, 2, 3]]then the output will be True as there ... Read More

Suppose we have a list of distinct values and we want to remove each number in non-decreasing order. We have to find the indices of numbers in order of their deletion.So, if the input is like nums = [4, 6, 2, 5, 3, 1], then the output will be [5, ... Read More

Suppose we have two numbers called numerator and denominator representing a rational number in the form (numerator / denominator). We have to find its decimal representation as a string. If there are some recurring numbers, then surround them with brackets.So, if the input is like numerator = 164 denominator = ... Read More

Suppose we have a list of requests where each list contains elements like [uid, time_sec] (uid is the user id and time_sec is the timestamp). This indicates the user whose id is uid has requested to a website at timestamp time_sec. We also have two values u and g where ... Read More