How do you do selection sort in descending order?

How do you do selection sort in descending order?

4 Answers

  1. Multiply all the numbers by -1 and apply the original selection sort to sort for ascending order. After sorting is complete multiply all the numbers by -1 to get back originwl numbers but now they are sorted in descending order.
  2. Try changing the comparison condition if(data[j] < data[min_idx])

How do you perform a selection sort in Java?

Selection Sort Java Example

  1. public class SelectionSortExample {
  2. public static void selectionSort(int[] arr){
  3. for (int i = 0; i < arr.length – 1; i++)
  4. {
  5. int index = i;
  6. for (int j = i + 1; j < arr.length; j++){
  7. if (arr[j] < arr[index]){
  8. index = j;//searching for lowest index.

Is insertion sort ascending or descending?

Suppose, an array is in ascending order, and you want to sort it in descending order. In this case, worst case complexity occurs….Insertion Sort Complexity.

Time Complexity
Best O(n)
Worst O(n2)
Average O(n2)
Space Complexity O(1)

Is selection sort the same as insertion sort?

The difference is in what the inner loop does: In selection sort, the inner loop is over the unsorted elements. Each pass selects one element, and moves it to its final location (at the current end of the sorted region). In insertion sort, each pass of the inner loop iterates over the sorted elements.

What is difference between insertion sort and selection sort?

The main difference between insertion sort and selection sort is that insertion sort performs sorting by exchanging an element at a time with the partially sorted array while selection sort performs sorting by selecting the smallest element from the remaining elements and exchanging it with the element in the correct …

Can insertion sort be in descending order?

Insertion Sort :-Insertion sort is a simple sorting algorithm that works out how to sort cards playing in our hands. Descending order :- Numbers are said to be in descending order when they are arranged from largest to smallest number. Such as 21, 17, 13, 9 and 3 are arranged in descending order.

What is selection sort algorithm?

Selection sort is an effective and efficient sort algorithm based on comparison operations.

  • It adds one element in each iteration.
  • You need to select the smallest element in the array and move it to the beginning of the array by swapping with the front element.
  • What is selection sort method?

    Selection sort is a method in which an input array will be divided into two subarrays in order to keep them sorted and unsorted elements. The minimum element in the array will be swapped with the element in the first position, and the process continues until a sorted array is formed.

    What is a selection sort?

    Selection sort is a simple sorting algorithm. This sorting algorithm is an in-place comparison-based algorithm in which the list is divided into two parts, the sorted part at the left end and the unsorted part at the right end. Initially, the sorted part is empty and the unsorted part is the entire list.

    How to selection sort Java?

    an object ‘ob’ of the class is created to call the required functions

  • an array ‘array[]’ is initialized with length 4
  • ob.inputArray (int[],int) is called to take input integer elements from the user and store them in the array
  • ob.selectionSort (int[],int) is called to sort the elements of the array with the algorithm explained above