Bubble sort is a straightforward sorting method. This sorting algorithm is a comparison-based method that compares each pair of adjacent elements and swaps them if they are not in order. Because its average and worst-case complexity are Ο(n2), where n is the number of items, this approach is not suitable for huge data sets.
We assume list is an array of n elements. We further assume that swap function swaps the values of the given array elements.
begin BubbleSort(list) for all elements of list if list[i] > list[i+1] swap(list[i], list[i+1]) end if end for return list end BubbleSort
procedure bubbleSort( list : array of items ) loop = list.count; for i = 0 to loop-1 do: swapped = false for j = 0 to loop-1 do: /* compare the adjacent elements */ if list[j] > list[j+1] then /* swap them */ swap( list[j], list[j+1] ) swapped = true end if end for /*if no number was swapped that means array is sorted now, break the loop.*/ if(not swapped) then break end if end for end procedure return list
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