Data Structures and Algorithms: Converting Python Program to Java

Can you convert the Python program below to Java?

Graph.py
import random
class Vertex(object):
def __init__(self, key, index, payload=None):

Answer:

Yes, it is possible to convert the provided Python program to Java. Below is the Java code equivalent to the given Python program:

        
            import java.util.Random;

            class Vertex {
                private int key;
                private int index;
                private Object payload;

                public Vertex(int key, int index, Object payload) {
                    this.key = key;
                    this.index = index;
                    this.payload = payload;
                }

                public Vertex(int key, int index) {
                    this(key, index, null);
                }

                public int getKey() {
                    return key;
                }

                public int getIndex() {
                    return index;
                }

                public Object getPayload() {
                    return payload;
                }

                public void setPayload(Object payload) {
                    this.payload = payload;
                }
            }

            public class Graph {
                public static void main(String[] args) {
                    // Create instances of Vertex or perform other tasks here
                }
            }
        
    

To convert the Python program to Java, you need to define a Java class named 'Vertex' with similar members and methods as in the Python 'Vertex' class. The Java code uses Java's syntax for class declaration, constructors, methods, and variable types.

The Java 'Vertex' class has constructors to initialize the key, index, and payload of a vertex object. It also includes getter and setter methods to access and modify the key, index, and payload values. Additionally, a main method in the 'Graph' class can be used to create instances of the 'Vertex' class or perform other tasks.

By following this Java code structure, you can successfully convert the Python program to Java while ensuring the functionality remains intact.