Java: Calculate the median of a given unsorted array of integers

Last update on May 12 2025 13:12:29 (UTC/GMT +8 hours)

Median of Array

Write a Java program to calculate the median of a non-sorted array of integers.
Example: {10,2,38,23,38,23,21}
Output: 23

Pictorial Presentation:

Sample Solution:

Java Code:

import java.util.*;

public class Main {
    public static void main(String[] args) {
        // Define and initialize an array of integers
        int[] nums = {10, 2, 38, 22, 38, 23};
        
        // Display the original array
        System.out.println("Original array: " + Arrays.toString(nums));
        
        // Calculate and display the median of the array
        System.out.println("Median of the said array of integers: " + getMedian(nums));
        
        // Define and initialize another array of integers
        int[] nums1 = {10, 2, 38, 23, 38, 23, 21};
        
        // Display the original array
        System.out.println("\nOriginal array: " + Arrays.toString(nums1));
        
        // Calculate and display the median of the second array
        System.out.println("Median of the said array of integers: " + getMedian(nums1));
    }

    public static int getMedian(int[] array) {
        // Check if the length of the array is even
        if (array.length % 2 == 0) {
            // Calculate the median for even-sized arrays
            int mid = array.length / 2;
            return (array[mid] + array[mid - 1]) / 2;
        }
        // Calculate the median for odd-sized arrays
        return array[array.length / 2];
    }
}

Sample Output:

Original array: [10, 2, 38, 22, 38, 23]
Median of the said array of integers: 30

Original array: [10, 2, 38, 23, 38, 23, 21]
Median of the said array of integers: 23

Flowchart:

For more Practice: Solve these Related Problems:

• Modify the program to find the median of a sorted array.
• Write a program to find the median of two sorted arrays.
• Modify the program to compute the mode (most frequent number).
• Write a program to compute the mean, median, and mode of an array.

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