write a program for optimal merge pattern in c or c

It remains to empty the other input list. While A is not empty and B is not empty do if head(A) ≤ head(B) then : 104 The function head yields the first element of a list 'dropping' an element means removing it from its list, typically by incrementing a pointer or index.Īlgorithm merge(A, B) is inputs A, B : list The following pseudocode demonstrates an algorithm that merges input lists (either linked lists or arrays) A and B into a new list C. Merging two sorted lists into one can be done in linear time and linear or constant space (depending on the data access model). The sorted partitions are then merged to produce larger, sorted, partitions, until 1 partition, the sorted array, is left.

The array is divided into 7 partitions each partition contains 1 element and is sorted. It starts with an unsorted array of 7 integers. The merge algorithm is used repeatedly in the merge sort algorithm.Īn example merge sort is given in the illustration.

Repeatedly merge sublists to create a new sorted sublist until the single list contains all elements.

A list containing a single element is, by definition, sorted.

Recursively divide the list into sublists of (roughly) equal length, until each sublist contains only one element, or in the case of iterative (bottom up) merge sort, consider a list of n elements as n sub-lists of size 1.

Conceptually, the merge sort algorithm consists of two steps:

The merge algorithm plays a critical role in the merge sort algorithm, a comparison-based sorting algorithm.

These algorithms are used as subroutines in various sorting algorithms, most famously merge sort.Īpplication An example for merge sort Merge algorithms are a family of algorithms that take multiple sorted lists as input and produce a single list as output, containing all the elements of the inputs lists in sorted order. Algorithm that combines multiple sorted lists into one

Write a program for optimal merge pattern in c or c