Shell Sort in Java2 min read

In this tutorial, we will learn how to implement Shell Sort in java. First, we will start by understanding the Shell Sort algorithm.

Shell Sort Algorithm

Shell sort is an in-place comparison-based sorting algorithm and variation of Insertion sort. It is a better version of Insertion sort in comparison-based. It can compare the elements far apart whereas Insertion compares adjacent elements.

In shell sort, we make the array h-sorted for a large value of h. We keep reducing the value of h until it becomes 1. An array is said to be h-sorted if all sublists of every h’th element are sorted.

Shell sort

Time Complexity of Shell Sort:

  • Best case:  0(nlogn)
  • Average case:  0(n(logn)^2)
  • Worst case:  0(n(logn)^2)

Before we begin, you need to have an idea of the following:


Implementation of Shell sort in java

The output of shell Sort Algorithm in java:


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