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Articles by Arnab Chakraborty
Page 49 of 377
Program to find all upside down numbers of length n in Python
Suppose we have a value n. We have to find all upside down numbers of length n. As we knot the upside down number is one that appears the same when flipped 180 degrees.So, if the input is like n = 2, then the output will be ['11', '69', '88', '96'].To solve this, we will follow these steps −Define a function middle() . This will take xif x is 0, thenreturn list of a blank stringif x is same as 1, thenreturn a new list of elements 0, 1, 8ret := a new listmid := middle(x − 2)for each m ...
Read MoreProgram to find sum of concatenated pairs of all each element in a list in Python?\\n
Suppose we have a list of numbers called nums. We have to find the sum of every concatenation of every pair of numbers in nums. Here the pair (i, j) and pair (j, i) are considered different.So, if the input is like nums = [5, 3], then the output will be 176, as We have the following concatenations: (nums[0] + nums[0]) = (5 concat 5) = 55, (nums[0] + nums[1]) = (5 concat 3) = 53, (nums[1] + nums[0]) = (3 concat 5) = 35, (nums[0] + nums[0]) = (3 concat 3) = 33, then the sum is 55 + ...
Read MoreProgram to check whether given list is in valid state or not in Python
Suppose we have a list of numbers called nums, we have to check whether every number can be grouped using one of the following rules: 1. Contiguous pairs (a, a) 2. Contiguous triplets (a, a, a) 3. Contiguous triplets (a, a + 1, a + 2)So, if the input is like nums = [7, 7, 3, 4, 5], then the output will be True, as We can group [7, 7] together and [3, 4, 5] together.To solve this, we will follow these steps −n := size of numsdp := a list of size n+1, first value is True, others are ...
Read MoreProgram to find a matrix for each condominium's height is increased to the maximum possible height in Python?
Suppose we have a 2D matrix, where matrix [r, c] represents the height of a condominium in a city. The west-east skyline is visible by taking the maximum of each row in the matrix. And the north-south skyline can be visible by taking the maximum of each column. We have to find a new matrix where each condominium's height is increased to the maximum possible height while keeping the same west-east and north-south skyline.So, if the input is like23456789104447778910as the west-east skyline is [4, 7, 10] and north-south skyline is [8, 9, 10]. We can increase everything in the first ...
Read MoreProgram to find length of longest possible stick in Python?
Suppose we have a list of integers sticks. Here each element in the list represents a stick with two ends, these values are between 1 and 6. These are representing each end. We can connect two sticks together if any of their ends are same. The resulting stick's ends will be the leftover ends and its length is increased. We have to find the length of the longest stick possible.So, if the input is like sticks = [ [2, 3], [2, 4], [3, 5], [6, 6] ], then the output will be 3, as we can connect [2, 3] and ...
Read MoreProgram to find next state of next cell matrix state in Python?
Suppose we have a 2D binary matrix where a 1 means a live cell and a 0 means a dead cell. A cell's neighbors are its immediate horizontal, vertical and diagonal cells. We have to find the next state of the matrix using these rulesAny living cell with two or three living neighbors lives.Any dead cell with three living neighbors becomes a live cell.All other cells die.So, if the input is like1100010001011101then the output will be1100010001001100To solve this, we will follow these steps:n := row size of matrix, m := column size of matrixres := a matrix of size n ...
Read MoreProgram to print maximum number of characters by copy pasting in n steps in Python?
Suppose we have a number n; we have to find the maximum number of characters we can enter using n operations where each operation is likeInserting the character "x".Copy all characters.PasteSo, if the input is like n = 12, then the output will be 81.To solve this, we will follow these stepsif n
Read MoreProgram to find cost to remove consecutive duplicate characters with costs in C++?
Suppose we have a string with lowercase letters and we also have a list of non-negative values called costs, the string and the list have the same length. We can delete character s[i] for cost costs[i], and then both s[i] and costs[i] is removed. We have to find the minimum cost to delete all consecutively repeating characters.So, if the input is like s = "xxyyx" nums = [2, 3, 10, 4, 6], then the output will be 6, as we can delete s[0] and s[3] for a total cost of 2 + 4 = 6.To solve this, we will follow ...
Read MoreProgram to find length of longest diminishing word chain in Python?
Suppose we have a list of valid words, and have a string s also, we have to find the length of the longest chain of diminishing words that can be generated by starting at s and removing single letters and still make valid words.So, if the input is like words = ["lii", "limit", "limi", "li", "coffee", "jug", "pool", "type"] s = "limit", then the output will be 4, as we can make the chain, starting from the word "limit", "limit" -> "limi" -> "lii" -> "li".To solve this, we will follow these stepsDefine a function solve() . This will take ...
Read MoreProgram to find a pair (i, j) where nums[i] + nums[j] + (i -j) is maximized in Python?
Suppose we have a list of numbers called nums, we have to find a pair (i, j) where i < j, and nums[i] + nums[j] + (i - j) is maximized.So, if the input is like nums = [6, 6, 2, 2, 2, 8], then the output will be 11, as if we pick the two 6 then its score is 6 + 6 + 0 - 1 = 11.To solve this, we will follow these steps:large := nums[0]maxi := 0for i in range 1 to size of nums, dolarge := large - 1maxi := maximum of large + nums[i] ...
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