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# selection sort example

Example: For example, if the index of the minimum value is 3, then the value of the element with index 3 is placed at index 0 while the value that was at index 0 is placed at index 3. Selection sort 1. procedure selection sort list : array of items n : size of list for i = 1 to n - 1 /* set current element as minimum*/ min = i /* check the element to be minimum */ for j = i+1 to n if list[j] < list[min] then min = j; end if end for /* swap the minimum element with the current element*/ if indexMin != i then swap list[min] and list[i] end if end for end procedure Consider the following depicted array as an example. In one part all elements are sorted and in another part the items are unsorted. Selection sort is basically a selection of an element position from the start with the other rest of the elements. In every iteration of selection sort, the minimum element (considering ascending order) from the unsorted subarray is picked and moved to the sorted subarray. We swap these values. This program uses Nested For Loop to sort the array elements using selection sort. Comparison among Bubble Sort, Selection Sort and Insertion Sort, Program to sort an array of strings using Selection Sort, C++ program for Sorting Dates using Selection Sort, Recursive selection sort for singly linked list | Swapping node links, A sorting algorithm that slightly improves on selection sort, Sorting Algorithms Visualization | Selection Sort, C program for Time Complexity plot of Bubble, Insertion and Selection Sort using Gnuplot, Job Selection Problem - Loss Minimization Strategy | Set 2. Selection Sort Algorithm Space Complexity is O(1). Auxiliary Space: O(1) Selection sort is one of the widely uses technique to sort an arrays in C++ programming. Selection sort. Please use ide.geeksforgeeks.org, After getting the data (say minimum) we place it at the beginning of the list by replacing the data of first place with the minimum data. Selection sort is conceptually the most simplest sorting algorithm. T e c h g e e k b u z z ——–> b c e e e g h k t z z Sort an array of strings using Selection Sort. Consider L is an array which is having n number of elements. Stability : The default implementation is not stable. void selection_sort (int A[ ], int n) { // temporary variable to store the position of minimum element int minimum; // reduces the effective size of the array by one in each iteration. Following example explains the above steps: edit If the second element is smaller than minimum, assign the second element as minimum. Selection Sort in C. For example- See the following list of alphabets and then sorted list after arranging in alphabetical order. For the first position in the sorted list, the whole list is scanned sequentially. First, find the smallest element of the array and place it on the first position. In selection sort, the smallest value among the unsorted elements of the array is selected in every pass and inserted to its appropriate position into the array. We first check for smallest element in the list and swap it with the first element of the list. How to swap two numbers without using a temporary variable? Selection Sort is the easiest approach to sorting. How the Selection Sort Algorithm? An algorithm to sort the given array of elements in ascending or descending order. Experience. Again, if the third element is smaller, then assign minimum to the third element otherwise do nothing. Unsorted subarray to keep the unsorted elements. The first position where 14 is stored presently, we search the whole list and find that 10 is the lowest value. The selection sort is a combination of searching and sorting. Sundeep Saradhi Kanthety 58,251 views. 2) Remaining subarray which is unsorted. Selection Sort is one of the most simple sorting algorithm that sorts the data items into either ascending or descending order, which comes under the category of in-place comparison sort algorithm. Sorted subarray to keep the sorted elements 2. In Place : Yes, it does not require extra space. The algorithm maintains two subarrays in a given array. Selection Sort Algorithm using C++. Selection Sort Example. Its method works in such a way to find the minimum value in an array and put it to the minimum index, then it find the other values in an ascending order and puts them in their proper positions excluding the previous values. After two iterations, two least values are positioned at the beginning in a sorted manner. Given below is a tabular representation for the illustration: Unsorted list Least element Sorted list {17,10,7,29,2} 2 {} {17,10,7,29} 7 {2} {17,10,29} 10 {2,7} They are: 1. This process continues moving unsorted array boundary by one element to the right. Selection sort is one of the simplest sorting algorithms. Selection Sort in Java with examples of fibonacci series, armstrong number, prime number, palindrome number, factorial number, bubble sort, selection sort, insertion sort, swapping numbers … Initially, the sorted part is empty and the unsorted part is the entire list. it will find that 1 is the minimum element. The first element is 10. Sort an array of strings using Selection Sort. We have to do this n-1 times to sort the array. We find that 14 is the second lowest value in the list and it should appear at the second place. In the selection sort technique, the list is divided into two parts. 1. Selection sort works in a simple manner where it keeps two subarrays from the input array. This algorithm is not suitable for large data sets as its average and worst case complexities are of Ο(n2), where n is the number of items. Time Complexity: O(n2) as there are two nested loops. Best Case Running Time:Ω( n ) 2. 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