# Write a selection sort algorithm in java

Selection sort is noted for its simplicity, and also has performance advantages over more complicated algorithms in certain situations.

Given an array of integers, sort it using selection sort algorithm. On the other hand, as we counded in the previous paragraph, the number of all possible permutatioins is n!.

For smaller values of N input size the selection sort may in fact be considerably faster, especially if the swap times are much larger than the comparison times. 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.

Even though both the bubble sort and selection sort algorithms have average case time complexities of O n2bubble sort is almost all time outperformed by the selection sort. Selection sort is to repetitively pick up the smallest element and put it into the right position: Selection sort is a sorting algorithm, specifically an in-place comparison sort and is used for sorting an array of integers.

We will also discuss the algorithm and performance of the Selection Sort Implementation in Java. On the downside, selection sort is very inefficient at sorting lists containing large quantities of data.

Selection sort is explained in an easy way in Sorting an array using selection sort in Java. You will need to download the following files onto your local computer:.

Time complexity of selection sort is O N 2 which is same as the time complexity of bubble sort but the number of swaps required are comparatively lesser in Selection sort than Bubble sort.

## Selection sort in c with explanation

This is more efficient, but you shouldn't be writing your own sort - use java. Then, from the remaining N-1 elements, the element with the smallest key is found and exchanged with the second element, and so forth. Bubble sort: repeatedly compare neighbor pairs and swap if necessary. Selection Sort in Java. Here we wish to sort an array of integers in Java; this can be easily extended to other data types and collections. The selection sort improves over the bubble sort by reducing the number of swapping necessary from O n 2 to O n. Fact, that selection sort requires n - 1 number of swaps at most, makes it very efficient in situations, when write operation is significantly more expensive, than read operation.

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