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In this program, we will do the sort in the function. Selection Sort Program in C: However, it uses very small amount of memory to replace the elements. In this tutorial I will explain about algorithm for selection sort in C and C++ using program example. The first ‘for loop’ takes care of the element to be matched. Binary Search In C: Everything You Need To Know Binary Search. Let us continue with this article on Selection Sort in C and see how the algorithm works, Step 2 − Search the minimum element in the array, Step 3 – swap the first location with the minimum value in the array. The new array is [1,5,2,10] Again, this process is repeated. This sorting algorithm, iterates through the array and finds the smallest number in the array and swaps it with the first element if it is smaller than the first element. It first finds the smallest element from the unsorted list of elements, swaps with the first position element, finds the second smallest element, swaps with the second position element, t his process continues till all the elements are sorted. It takes a constant amount of space and does not require any auxiliary data structure for sorting. Selection sort works by finding the smallest unsorted item in the list and swapping it with the item in the current position. Step 2-Swap smallest value with the first element of the list. int main(){  int array, n, c, d, position, t; printf("Enter number of elements\n");  scanf("%d", &n); for (c = 0; c < n; c++)    scanf("%d", &array[c]); for (c = 0; c < (n - 1); c++) // finding minimum element (n-1) times  {    position = c; for (d = c + 1; d < n; d++)    {      if (array[position] > array[d])        position = d;    }    if (position != c)    {      t = array[c];      array[c] = array[position];      array[position] = t;    }  }. The execution of the program is the same, but the only difference is that in this program a function is called to do the sorting. 1) The subarray which is already sorted… Pictorial Presentation : Selection Sort. Implementation in C Ltd. All rights Reserved. It has an O (n2) time complexity, which makes it inefficient on large lists, and generally performs worse than the similar insertion sort. Selection sort considered one of the prominent and straightforward sorting algorithms. It is also similar. Then, it is checked if the position variable is not equal to i. The selection sort method is used to sort an array in ascending order. We have to do this n-1 times to sort the array. Example: Let us consider the array as given below: Selection sort in C to sort numbers of an array in ascending order. Submitted by Sneha Dujaniya, on June 19, 2020 Selection sort is an unstable, in-place 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. One of the simplest techniques is a selection sort. C Program for Selection Sort : How to write a C Program to Sort Array using Selection Sort using For loop, While loop, fucntions, and pointers with example. Next, it goes on to the second element and so on until all elements are sorted. The next part we must find the smallest number from the remaining array. So, we replace 10 by 1. This is the simple sorting algorithm used in C programming. j holds the index of the smallest element. With this we come to the end of this blog on ‘Selection Sort In C’. Finally, we get the sorted array as [1,2,5,10]. With a little modification, it arranges numbers in descending order. It is similar to the hand picking where we take the smallest element and put it in the first position and the second smallest at the second position and so on. Let us now move to the final bit of this article on Selection Sort in C. There are other ways to do the selection sort. Example of Selection Sort In the first iteration, the value in the first element is assumed to be the 3 smallest. C Programming Tutorial: The Basics you Need to Master C, Everything You Need To Know About Basic Structure of a C Program. This C Program implements a Selection sort. Then the second smallest element is exchanged with the second element of the unsorted list of elements and so on until all the elements are sorted. How To Carry Out Swapping of Two Numbers in C? It is used for sorting … The smallest number from 5 2 and 1 is 1. Program will be the same logic C++ using selection sort c example that is used for arrays. To replace the elements array has n elements, n-1iterations are required to sort a of. 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