Java Exercises: Shell Sort Algorithm
Java Sorting Algorithm: Exercise-16 with Solution
Write a Java program to sort an array of given integers Shell Sort Algorithm.
According to Wikipedia "Shell sort or Shell's method, is an in-place comparison sort. It can be seen as either a generalization of sorting by exchange (bubble sort) or sorting by insertion (insertion sort). The method starts by sorting pairs of elements far apart from each other, then progressively reducing the gap between elements to be compared. Starting with far apart elements can move some out-of-place elements into position faster than a simple nearest neighbor exchange."
Sample Solution:
Java Code:
import java.util.Arrays;
public class ShellSort {
public static void shell(int[] a) {
int increment = a.length / 2;
while (increment > 0) {
for (int i = increment; i < a.length; i++) {
int j = i;
int temp = a[i];
while (j >= increment && a[j - increment] > temp) {
a[j] = a[j - increment];
j = j - increment;
}
a[j] = temp;
}
if (increment == 2) {
increment = 1;
} else {
increment *= (5.0 / 11);
}
}
}
// Method to test above
public static void main(String args[])
{
ShellSort ob = new ShellSort();
int nums[] = {7, -5, 3, 2, 1, 0, 45};
System.out.println("Original Array:");
System.out.println(Arrays.toString(nums));
ob.shell(nums);
System.out.println("Sorted Array:");
System.out.println(Arrays.toString(nums));
}
}
Sample Output:
Original Array: [7, -5, 3, 2, 1, 0, 45] Sorted Array: [-5, 0, 1, 2, 3, 7, 45]
Flowchart:
Java Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a Java program to sort an array of given integers using Permutation sort Algorithm.
Next: Write a Java program to sort an array of given non-negative integers using Sleep Sort Algorithm.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
Ref: https://bit.ly/32urdSe
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework