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Java Array Exercises: Get the difference between the largest and smallest values in an array of integers

Java Array: Exercise-28 with Solution

Write a Java program to get the difference between the largest and smallest values in an array of integers. The length of the array must be 1 and above.

Pictorial Presentation:

Java Array Exercises: Get the difference between the largest and smallest values in an array of integers

Sample Solution:

Java Code:

import java.util.Arrays; 
 public class Exercise28 {
 public static void main(String[] args)
 {
    int[] array_nums = {5, 7, 2, 4, 9};
	System.out.println("Original Array: "+Arrays.toString(array_nums)); 
	int max_val = array_nums[0];
	int min = array_nums[0];
	for(int i = 1; i < array_nums.length; i++)
	{
		if(array_nums[i] > max_val)
			max_val = array_nums[i];
		else if(array_nums[i] < min)
			min = array_nums[i];
	}
	System.out.println("Difference between the largest and smallest values of the said array: "+(max_val-min));	
 }
}

Sample Output:

                                                                              
Original Array: [5, 7, 2, 4, 9]                                        
Difference between the largest and smallest values of the said array: 7

Flowchart:

Flowchart: Java exercises: Get the difference between the largest and smallest values in an array of integers

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Java Code Editor:

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Previous: Write a Java program to find the number of even and odd integers in a given array of integers.
Next: Write a Java program to compute the average value of an array of integers except the largest and smallest values.

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Java: Tips of the Day

Different between parseInt() and valueOf() in java?

Well, the API for Integer.valueOf(String) does indeed say that the String is interpreted exactly as if it were given to Integer.parseInt(String). However, valueOf(String) returns a new Integer() object whereas parseInt(String) returns a primitive int.

If you want to enjoy the potential caching benefits of Integer.valueOf(int), you could also use this eyesore:

Integer k = Integer.valueOf(Integer.parseInt("123"))

Now, if what you want is the object and not the primitive, then using valueOf(String) may be more attractive than making a new object out of parseInt(String) because the former is consistently present across Integer, Long, Double, etc.

Ref: https://bit.ly/3vRuIPY