This is a C++ program to sort the given data using Shaker Sort.

1. Shaker sort, unlike bubble sort, orders the array in both directions.

2. The worst case time complexity is O(n^2).

1. In each iteration, sorting is done in two parts.

2. Firstly set the highest value to the highest index and decrement the index.

3. Then lowest value to the lowest index and increment the index.

4. Display the result.

5. Exit.

C++ program to implement Shaker Sort.

This program is successfully run on Dev-C++ using TDM-GCC 4.9.2 MinGW compiler on a Windows system.

#include<iostream> using namespace std; // A function to swap values using call by reference. void swap(int *a, int *b) { int temp; temp = *a; *a = *b; *b = temp; } // A function implementing shaker sort. void ShakerSort(int a[], int n) { int i, j, k; for(i = 0; i < n;) { // First phase for ascending highest value to the highest unsorted index. for(j = i+1; j < n; j++) { if(a[j] < a[j-1]) swap(&a[j], &a[j-1]); } // Decrementing highest index. n--; // Second phase for descending lowest value to the lowest unsorted index. for(k = n-1; k > i; k--) { if(a[k] < a[k-1]) swap(&a[k], &a[k-1]); } // Incrementing lowest index. i++; } } int main() { int n, i; cout<<"\nEnter the number of data element to be sorted: "; cin>>n; int arr[n]; for(i = 0; i < n; i++) { cout<<"Enter element "<<i+1<<": "; cin>>arr[i]; } ShakerSort(arr, n); // Printing the sorted data. cout<<"\nSorted Data "; for (i = 0; i < n; i++) cout<<"->"<<arr[i]; return 0; }

1. Take input of data.

2. Call ShakerSort() function with ‘arr’ the array of data and ‘n’ the number of values, in the argument list.

3. Implement Sorting algorithm using nested for loops.

4. The parent loop will run on ‘i’ from 0 to n-1 and contains two loops inside.

5. The first loop will run on ‘j’ from i+1 to n-1 and use swap() if a[j] < a[j-1].
6. Decrement n.
7. The second loop will run on 'k' from n-1 to i+1 and use swap() if a[k] < a[k-1].
8. Increment i.
9. Return to main and display the result.
10. Exit.

Case 1:(average case) Enter the number of data element to be sorted: 5 Enter element 1: 998 Enter element 2: 451 Enter element 3: 2 Enter element 4: 35 Enter element 5: 1206 Sorted Data ->2->35->451->998->1206 Case 2:(best case) Enter the number of data element to be sorted: 5 Enter element 1: 2 Enter element 2: 332 Enter element 3: 456 Enter element 4: 1024 Enter element 5: 16565 Sorted Data ->2->332->456->1024->16565 case 3: (worst case) Enter the number of data element to be sorted: 5 Enter element 1: 99845 Enter element 2: 564 Enter element 3: 332 Enter element 4: 86 Enter element 5: 1 Sorted Data ->1->86->332->564->99845

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