Data Structures

A selection sort is slightly more complicated. but relatively easy to understand and to code. It is one of the slow sorting technique. Given an unsorted array of integer values, a selection sort visits each element of the array, in turn.

In this example, we will see Bubble sort algorithm with example. In bubble sort we'll compare each element of list to the element that follows it. If the current element is greater than the element at next location, then they are in the wrong order, and we'll swap them.

In this example, we will see Insertion sort algorithm with example. An insertion sort is quite simple to understand and simple to implement. An insertion sort visits each element of the array, in turn. As it visits a particular element, it scans the array from the beginning to end to determines where in that segment of the array the current value belongs.

Sorting is the problem of taking an arbitrary permutation of n items and rearranging them into the total order. Sorting algorithms are used in all kinds of applications and are necessary for instance, if we plan to use efficient searching algorithms like Binary Search or Interpolation Search since these require their data to be sorted.

Before we reading through Binary search algorithm, let us recap sequential search or linear search. In Linear search algorithm searching begins with searching every element of the list till the required record is found. Also it doesn't demand the sequence or order of elements in the list. If the list is quite huge, then this approach is not optimal. The drawbacks of sequential search can be eliminated by using Binary search algorithm.

Sequential Search is the most natural searching method. In this method, the searching begins with searching every element of the list till the required record is found. It makes no demands on the ordering of records. It takes considerably amount of time and is slower.

Searching methods are designed to take advantage of the file organisation and optimize the search for a particular record or to establish its absence. The file organisation and searching method chosen can make a substantial difference to an application's performance.