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Articles by Sunidhi Bansal
Page 22 of 81
Count the total number of squares that can be visited by Bishop in one move in C++
On a chessboard represented as 8 X 8 grid we are given the position of Bishop in form of row and column position. The goal is to find the total number of squares that Bishop can visit in one move. We know the Bishop can move in all directions (diagonally left up/down and right up/down).For ExampleInputrow = 5, column = 4OutputCount of total number of squares that can be visited by Bishop in one move are: 13ExplanationAs shown in above figure the squares that Bishop can cover are 9.Inputrow = 1, column = 1OutputCount of total number of squares that ...
Read MoreCount the numbers that can be reduced to zero or less in a gamein C++
Given an array of positive numbers and two integers A and B. Two players are playing a game in which they will reduce numbers in the array. Player 1 can decrease any element of the array by A and player 2 can increase any element of the array by B. The goal is to find the count of numbers that can be reduced to 0 or less by player 1. The first player makes the first move. The number once reduced to 0 or less can’t be taken into consideration by player 2.For ExampleInputarr[] = { 1, 4, 5, 2 ...
Read MoreCount the number of ways to traverse a Matrix in C++
Given a 2D matrix with dimensions row X col. The goal is to count the number of ways one can traverse the matrix from cell 0, 0 to cell row, col using only right and down moves, i.e. first move can be 0, 0 to 0, 1 (down) or 1, 0 (right) and not 1, 1(diagonal).For ExampleInputcol = 2; row = 4OutputCount of number of ways to traverse a Matrix are: 4ExplanationThe ways in which we can reach from cell 0, 0 to 2, 4 is shown −Inputcol = 4; row = 3OutputCount of number of ways to traverse a ...
Read MoreCount the number of ways to tile the floor of size n x m using 1 x m size tiles in C++
Given two numbers n and m representing the length and breadth of the floor of a room. The goal is to count the number of ways in which this floor can be tiled using the tiles of size 1Xm.For ExampleInputn=3 m=2OutputCount the number of ways to tile the floor of size n x m using 1 x m size tiles are: 3ExplanationThe ways will be three 1x2 tiles arranged as shown below −Inputn=3 m=3OutputCount the number of ways to tile the floor of size n x m using 1 x m size tiles are: 2ExplanationThe ways will be three 1x3 ...
Read MoreCount the number of vowels occurring in all the substrings of given string in C++
Given a string str containing English alphabets. The goal is to find the number of vowels occurring in all the substrings of str. If string is “abcde” then substrings will be “a”, “b”, “c”, “d”, “e”, “ab”, “bc”, “cd”, “de”, “abc”, “bcd”, “cde”, “abcd”, “bcde”, “abcde”. The count of vowels in these substrings is 10. (a and e)For ExampleInputstr = ”aloe”OutputCount the number of vowels occurring in all the substrings of given string are: 14ExplanationThe substrings are: “a”, “l”, “o”, “e”, “al”, “lo”, “oe”, “alo”, “loe”, “aloe”. Total vowels in these are: 14Inputstr=”http”OutputCount the number of vowels occurring in all ...
Read MoreCount the number of sub-arrays such that the average of elements present in the subarray is greater than that not present in the sub-array in C++
Given an array arr[ ] of positive integers. The goal is to find the count of subarrays of arr[ ] that have an average of its elements greater than the average of the rest of the elements of arr[ ] that are not present in it.For ExampleInputarr[ ] = { 3, 2, 4 }OutputCount of number of sub-arrays such that the average of elements present in the sub−array is greater than that do not present in the sub−array are: 2ExplanationThe subarrays are − [ 3 ], [ 2 ], [ 4 ], [ 3, 2 ], [ 2, 4 ], ...
Read MoreCount of suffix increment/decrement operations to construct a given array in C++
We are given a target array arr[] containing positive integers. The goal is to construct the target array arr[] using an initial array with all 0s. The operations that can be applied on a given empty array with all 0s will suffix increment/decrement operations.If we choose any index say i, then in case of suffix increment operation we will add 1 to all elements from index i till last index.In case of suffix decrement operation we will subtract 1 from all elements from index i till last index.Let us understand with examplesInput − arr[]= { 1, 2, 3 }Output − ...
Read MoreCount the number of rectangles such that ratio of sides lies in the range [a,b] in C++.
Given sides of rectangles in and range variables first and last. The goal is to find the count of rectangles that have a ratio of their side’s length/breadth lying in the range [ first, last].For ExampleInputrec[] = { { 200, 210 }, { 100, 50 }, { 300, 190}, {180, 200}, {300, 200}} and first = 1.0, last = 1.6OutputCount of number of rectangles such that ratio of sides lies in the range [a, b] are: 4ExplanationThe sides that have ratio in the range [ 1.0, 1.6 ] are : {200, 210}, {300, 190}, {180, 200}, {300, 200}Inputrec[] = { ...
Read MoreCount of total anagram substrings in C++
We are given a string str[] as input. The goal is to count the number of anagram substrings present in str[]. Two strings are anagrams of each other if they contain the same number of characters and all characters occur in both. The order of characters can be different.“abc” is an anagram of “cba”, “bca” etc.Let us understand with examples.Input − str[] = “abccb”Output − Count of total anagram substrings are − 4Explanation − Anagrams are − (b, b), (c, c), (bc, cb), (bcc, ccb)Input − str = “aaa”Output − Count of total anagram substrings are − 4Explanation − Anagrams ...
Read MoreCount number of subsets of a set with GCD equal to a given number in C++
Given an array ar, containing positive numbers and an array GCD[] containing gcd values.The goal is to find the number of subsets of elements of arr[] that have gcd values as given in GCD[].For ExampleInputarr[] = {10, 5, 6, 3}, GCD[] = {2, 3, 5}OutputCount of number of subsets of a set with GCD equal to a given number are: 1 2 2ExplanationThe subsets with GCD equal to 2 is [ 10, 6 ]. Subsets with GCD equal to 3 is [ 3 ], [ 6, 3 ] Subsets with GCD equal to 5 is [ 5 ], [ 10, ...
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