You are given an integer array coins representing coins and an integer amount. Return the number of combinations that make up that amount.
You are given an integer vector coins[n] representing coins of different denominations and an integer amount representing a total amount of money.
We’ll use Rails framework and a Java service for this task. Ruby on Rails, or Rails, is a server-side web application framework written in Ruby under the MIT License.
Given a function foo(), that returns an integer between 1 and 5 with equal probability. Write a function using foo() that returns an integer between 1 and 7.
Reservoir sampling is a category of randomised algorithms for choosing a simple random sample, without replacement, of k items
Database replication is usually done to achieve HA (High Availability) and load-sharing purposes. A single member of group is designated as master for a given piece of data and is the only node allowed to modify data.
Floyd-Warshall algorithm helps in finding the shortest path between all pairs of vertices in a graph.
A graph consists of two sets, namely V (vertices) and E (Edges). V represents a non-empty sets of vertices present in the graph. While E, represents the set of edges (joining two vertices) in the graph.
Mixins help avoid problem caused by multiple inheritance namely, Diamond Problem. Diamond problem is the reason why Java doesn’t support multiple inheritance.
When Java encounters a call to a method that is found within the object it is treated as a call to that object’s method.