Basic Programming Concepts

The Algorithm

An algorithm is a set of steps that help us solve a problem. It’s like a cooking recipe, where each step must be followed in order to get the desired result.

For example, if we want to bake a cake, we have to follow an algorithm that tells us the steps: mix the ingredients, put the mixture in a mold, bake the cake, and then decorate it. If we follow the steps correctly, we’ll have a delicious cake to enjoy.

In Java, we can write algorithms as code:

int numero1 = 5;
int numero2 = 3;
int resultado = numero1 + numero2;
System.out.println("El resultado es: " + resultado);

Here, we’re declaring two variables, numero1 and numero2, adding them and storing the result in a third variable, resultado.

Instructions

Instructions are the set of commands we give a computer program to perform a specific task. Each instruction represents an action the program must carry out.

Some examples:

  • Value assignment: int numero = 5;
  • Math operations: int resultado = 5 + 3;
  • Conditionals:
if (numero1 > numero2) {
    System.out.println("El número 1 es mayor que el número 2");
}

Good Programming Practices

  1. Descriptive names: Use names that reflect the purpose of the variable or function.
  2. Clear comments: Explain the “why” and not just the “what”.
  3. Divide and conquer: Break your code into small, cohesive functions.
  4. Avoid duplication: If you see repeated code, encapsulate it.
  5. Keep it simple: Avoid overly complicated solutions.
  6. Error handling: Use mechanisms like try-catch.
  7. Format and style: Keep consistent indentation and style.
  8. Test your code: Run thorough tests.
  9. Learn from others: Read code from other developers.
  10. Practice regularly: Consistency is the key to improvement.