Suppose we have a number n. We have to print a triangle with n rows and each line will hold line number i, i number of times.So, if the input is like n = 5, then the output will be1 22 333 4444 55555To solve this, we will follow these ... Read More

Suppose we have an array with n different English letters. We also have another value k. We can select k different indices (1-indexed) with uniform distribution. We have to find the probability that at least one of the k indices selected will contain the letter 'a'.So, if the input is ... Read More

Suppose we have a number n. We have to find a triangle with n rows and each row contains palindrome.So, if the input is like n = 5, then the output will be1 121 12321 1234321 123454321To solve this, we will follow these steps −for i in range 1 to ... Read More

Suppose we have a number n. We have to find the nth Fibonacci term by defining a recursive function.So, if the input is like n = 8, then the output will be 13 as first few Fibonacci terms are 0, 1, 1, 2, 3, 5, 8, 13, 21, 34...To solve ... Read More

Suppose we have an array nums containing size of n different cubes, they are placed horizontally. We have to make a pile of cubes vertically. The new cube should follow −if ith cube is on top of jth cube, then side length of jth one must be greater or equal ... Read More

Suppose we have two numbers a and b. We have to find the GCD of these two numbers in recursive way. To get the GCD we shall use the Euclidean algorithm.So, if the input is like a = 25 b = 45, then the output will be 5To solve this, ... Read More

Suppose we have a company name as string. We have to find the most common three characters from the company name and show them by following these rules −Pick most frequent three lettersSort them in descending orderIf the frequencies of some characters are same then take by their alphabetical orderSo, ... Read More

Suppose we have a list of ordered points represents a simple polygon endpoint on a 2D plane. We have to find the area of this polygon.So, if the input is like points = [(0, 0), (0, 5), (3, 5), (3, 0)], then the output will be 15.To solve this, we ... Read More

Suppose we have a numeric string s contains few digits. The digits may occur multiple times. We have to return some pairs (digit, count) represents which digit has occurred consecutively how many times in s. To solve this problem we can use the groupby() function that comes under itertools library. ... Read More

Suppose we have a list of words. These words may occur multiple times. We have to show the frequencies of these words and count how many distinct words are there.So, if the input is like words = ["Book", "Sound", "Language", "Computer", "Book", "Language"], then the output will be (4, '2 ... Read More