Maximum Number (Retrieve Maximun Number Of Array)

 

In our recent lab exercise, our professor presented us with a deceptively simple yet intellectually stimulating challenge: retrieving the maximum number from an array of integers using Java. At first glance, this task seemed like a basic exercise in array manipulation. However, as we began to explore different approaches and optimize our solutions, we realized the depth of understanding required to efficiently handle large datasets and edge cases. This exercise not only honed our skills in Java programming but also deepened our appreciation for algorithmic thinking and performance optimization.  This task helps new us understand fundamental programming concepts like loops, conditionals, and array manipulation. In this article, we’ll revisit this essential exercise by breaking down a Java program that identifies the largest number in a given array of integers.

public class MaximumNumber {
    public static void main(String[] args) {
        int[] numbers = {3, 4, 5, 7};
        int max = 0;

        for (int i = 0; i < numbers.length; i++) {
            if (numbers[i] > max) {
                max = numbers[i];
            }
        }
        System.out.println("Max Number In Array : " + max);
    }
}

Step-by-Step Breakdown

    1. Class and Main Method

• We define a public class called MaximumNumber.
• Inside this class, we define a main method, which serves as the entry point of the program.

    2. Declaring and Initializing the Array

• We create an integer array named numbers and initialize it with values {3, 4, 5, 7}.
• This array contains the values we want to analyze.

    3. Setting Up the Maximum Variable

• We declare an integer variable max and initialize it to 0.
• This variable will keep track of the maximum value as we iterate through the array.

    4. Looping Through the Array

• We use a for loop to traverse each element in the numbers array.
• The loop goes from 0 to numbers.length - 1.

    5. Comparing Each Element

• Inside the loop, we use an if statement to check if the current array element (numbers[i]) is greater than the current value of max.
• If the condition is true, we update max with the new maximum value found.

    6. Displaying the Maximum Value

• After the loop completes, we print out the maximum number stored in max.

Output of the Program

When you run the program, it displays the following output:

Max Number In Array : 7

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