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Is heyristic an algorithm?

A heuristic is not an algorithm, but rather a general rule of thumb. It doesn't always work, but it's fairly decent.


What is the importance of analysis in the design of an algorithm?

There are two main reasons we analyze an algorithm: correctness and efficiency. By far the most important reason to analyze an algorithm is to make sure it will correctly solve your problem. If our algorithm doesn't work, nothing else matters. So we must analyze it to prove that it will always work as expected. We must also look at the efficiency of our algorithm. If it solves our problem, but does so in O(nn) time (or space!), then we should probably look at a redesign.


What is the difference between implementation and algorithm?

An algorithm is a instruction for solving a problem. It is typically illustrated using prose, pseudo code or flowcharts, but other methods exist. The algorithm is the "here's how it's going to work" part of the solution. An implementation (of an algorithm) is a specific expression of this algorithm, using a specific programming language or any other suitable means. The implementation is the "here's how I've done it" part of the solution.


Will either kruskal or prim's algorithm work on negative edge graph?

The correctness of either Prim's or Kruskal's algorithm, is not affected by negative edges in the graph. They both work fine with negative edges. The question boils down to "Does a Priority Queue of numbers work with negative numbers?" because of the fact that both Prim's and Kruskal's algorithm use a priority queue. Of course -- as negative numbers are simply numbers smaller than 0. The "<" sign will still work with negative numbers.


What is algorithm to write algorithm to the program to access a pointer variable in structure?

Here is the algorithm of the algorithm to write an algorithm to access a pointer in a variable. Algorithmically.name_of_the_structure dot name_of_the _field,eg:mystruct.pointerfield