Given a number N as input. The goal is to find numbers m upto N that satisfy the following condition. Here N

Given a string str containing a number and a sum total as input. The goal is to find numbers upto str that have sum of digits equal to total.Let us understand with examples.For ExampleInput - N=”110”  sum=5Output - Count of numbers smaller than or equal to N with given digit ... Read More

Given a row x col matrix as input. The goal is to find all submatrices within the matrix[row][col] such that the sum of elements of that submatrix is divisible by integer k.If the matrix is mat[3][3] and k is 4 then submatrices will be as shown below:- Let us understand with ... Read More

Given a range of numbers between start and end. The goal is to find the count of numbers that have the first digit equal to the last digit and fall in the range [ first, last ].All single digit numbers will be counted if they lie in the range.Let us ... Read More

Given a positive number as the number of digits and a sum. The goal is to find all d digit numbers that have sum of digits equal to the input sum. The numbers having leading zeros will not be considered as d digit numbers.The ranges are digits between 1 to ... Read More

Given a long variable containing a positive number as input. The goal is to find the count of alphabets whose ASCII value digits are present in the digits of the number.Pick any two digits from the number and arrange them in a manner such that they form an ASCII value ... Read More

Given a positive number N as input. The goal is to find the number of ways in which we can express N as a sum of 1s, 3s and 4s only. For example, if N is 4 then it can be represented as 1+1+1+1, 3+1, 1+3, 4 so the number ... Read More

Given a matrix [ ][ ] having dimensions as row x col. The goal is to find the count of cells of matrix that meet the given condition:Value of cell matrix [i][j] + no. of adjacent cells to it = a Fibonacci numberNumbers in Fibonacci series:- 0, 1, 1, 2, ... Read More

Given three numbers 'a', 'b' and 'c' as input. The goal is to find the count/value of 'a', 'b' and 'c' after n seconds such that the rate of reproductions are:-Every a changes to b after every 2 secondsEvery b changes to c after every 5 secondsEvery c changes to ... Read More

Given two numbers start and end as range variables. The goal is to find the count of numbers that lie in this range [start, end] and have a difference of sum of digits at even and sum of digits at odd positions as Prime.That is (sum of digits at even ... Read More