Program To Find Largest Number In An Array

In this article, we’ll write a program to find largest number in an array using programming languages such as C#, C++, Python, and Java.

Table of Contents

1 Definition of Array:
2 C#
3 C++
4 Python
5 JAVA
- 5.1 Related

Definition of Array:

An array is a data structure that allows the storage of a collection of elements of the same data type under a single identifier. Array elements are stored in contiguous memory and are accessed using numeric indexes starting at 0.

Arrays provide a structured way to organize and manage data and allow developers to work with multiple values of the same data type within a single variable.

C#

Example 1: C# program to find largest number in an array using LINQ.

using System;
using System.Linq;

class Program
{
    static void Main()
    {
        // Sample array
        int[] numbers = { 12, 45, 78, 23, 56, 89, 34, 67 };

        // Find the largest number using LINQ
        int largestNumber = numbers.Max();

        // Display the result
        Console.WriteLine("The largest number in the array is: " + largestNumber);
    }
}

Output:

The largest number in the array is: 89

Example 2: C# program to Iterate through the array and identify the largest number.

using System;

class Program
{
    static void Main()
    {
        // Sample array
        int[] numbers = { 12, 45, 78, 23, 56, 89, 34, 67 };

        // Find the largest number
        int largestNumber = FindLargestNumber(numbers);

        // Display the result
        Console.WriteLine("The largest number in the array is: " + largestNumber);
    }

    static int FindLargestNumber(int[] array)
    {
        // Initialize the largest number with the first element
        int maxNumber = array[0];

        // Iterate through the array to find the largest number
        foreach (int num in array)
        {
            if (num > maxNumber)
            {
                maxNumber = num;
            }
        }

        // Return the largest number
        return maxNumber;
    }
}

Output:

The largest number in the array is: 89

Code Explanation:

We start by defining an array of integers named numbers.
The FindLargestNumber() method is then created to iterate through the array and identify the largest number.
The Main method calls FindLargestNumber and displays the result.

C++

C++ program to find largest number in an array.

#include <iostream>
using namespace std;

int findLargestNumber(int array[], int size) {
    // Initialize the largest number with the first element
    int maxNumber = array[0];

    // Iterate through the array to find the largest number
    for (int i = 1; i < size; i++) {
        if (array[i] > maxNumber) {
            maxNumber = array[i];
        }
    }

    // Return the largest number
    return maxNumber;
}

int main() {
    // Sample array
    int numbers[] = { 12, 45, 78, 23, 56, 89, 34, 67 };
    int size = sizeof(numbers) / sizeof(numbers[0]);

    // Find the largest number
    int largestNumber = findLargestNumber(numbers, size);

    // Display the result
    cout << "The largest number in the array is: " << largestNumber << endl;

    return 0;
}

Output:

The largest number in the array is: 89

Python

Python program to find largest number in an array.

def find_largest_number(numbers):
    # Initialize the largest number with the first element
    max_number = numbers[0]

    # Iterate through the array to find the largest number
    for num in numbers[1:]:
        if num > max_number:
            max_number = num

    # Return the largest number
    return max_number

# Sample array
numbers = [12, 45, 78, 23, 56, 89, 34, 67]

# Find the largest number
largest_number = find_largest_number(numbers)

# Display the result
print("The largest number in the array is:", largest_number)

Output:

The largest number in the array is: 89

JAVA

JAVA program to find largest number in an array.

public class FindLargestNumber {
    public static void main(String[] args) {
        // Sample array
        int[] numbers = {12, 45, 78, 23, 56, 89, 34, 67};

        // Find the largest number
        int largestNumber = findLargestNumber(numbers);

        // Display the result
        System.out.println("The largest number in the array is: " + largestNumber);
    }

    static int findLargestNumber(int[] array) {
        // Initialize the largest number with the first element
        int maxNumber = array[0];

        // Iterate through the array to find the largest number
        for (int num : array) {
            if (num > maxNumber) {
                maxNumber = num;
            }
        }

        // Return the largest number
        return maxNumber;
    }
}

Output:

The largest number in the array is: 89

Conclusion

In this article, we’ve explored how to find the largest number in an array using C#, C++, Python, and Java. Understanding this fundamental task provides a solid foundation for working with arrays in various programming languages. Happy coding!

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Author
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Shekh Ali

Meet Sheikh Ali, a skilled Software engineer and passionate a blogger. He enjoys sharing his expertise in C#, Java, SQL, Design Patterns, and other related topics through his writing. When he's not coding, Sheikh Ali can often indulge in his passions for reading books and fitness training.

Definition of Array:

C#

C++

Python

JAVA

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