Given a M x N matrix where each cell can have value of 1, 0 or -1, where -1 denotes a unsafe cell, collect maximum number of ones starting from first cell and by visiting only safe cells (i.e. 0 or 1). We are allowed to go only left or down if the row is …
Given a pattern, count number of times the pattern appears in the given string as a subsequence.
Longest Alternating Subsequence is a problem of finding a subsequence of a given sequence in which the elements are in alternating order, and in which the sequence is as long as possible.
Given an unlimited supply of coins of given denominations, find the total number of distinct ways to get a desired change.
Given an unlimited supply of coins of given denominations, find the minimum number of coins required to get a desired change.
Given a rod of length n, find the optimal way to cut rod into smaller rods in order to maximize product of price of each of the smaller rod. Assume each rod of length i has price i.
Given a rod of length n and list of prices of rod of length i where 1 < = i
Given a positive integer N, count all N-digit binary strings without any consecutive 1’s.
Given a set of positive integers S, partition the set S into two subsets S1, S2 such that the difference between the sum of elements in S1 and the sum of elements in S2 is minimized.
Given a set of positive integers and an integer s, is there any non-empty subset whose sum to s.
Given a set of positive integers, find if it can be divided into two subsets with equal sum.
Given an array A, maximize value of the expression (A[s] – A[r] + A[q] – A[p]) where p, q, r and s are indexes of the input array and s > r > q > p.