Answer Posted / srinivas pentakota

A singleton is an class that can be instantiated once, and
only once. This is a fairly unique property, but useful in a
wide range of object designs. Creating an implementation of
the singleton pattern is fairly straightforward - simple
block off access to all constructors, provide a static
method for getting an instance of the singleton, and prevent
cloning.


public class SingletonObject
{
private SingletonObject()
{
// no code req'd
}

public static SingletonObject getSingletonObject()
{
if (ref == null)
// it's ok, we can call this constructor
ref = new SingletonObject();
return ref;
}

private static SingletonObject ref;
}

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For ease of programming you can consider the maze as a 2D array with colors represented by below integer and characters (in capital letters). • B - Black • W -White • G- Green • R- Red R B W B W W W W W W B W B B W W W W W W W B W B W W W B W W W W B B W W W B W W W B W W B B B B W B W B W W B W W W B W W W B B B W W B W W W B W W B W B W W W B W B W W W W B B W W W W B W W W W W G Shortest Route Problem: • Solution that finds the shortest Route between Red and Green  White will have 1 Weight.  Red and Green carry no weights.  Shortest path is the path with less weight when you add up the weights in the path.

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