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Sorting Algorithms Cheat Sheet by Pryl Via Cheatography.Com/66402/Cs/16808 Sorting algorithms Cheat Sheet by pryl via cheatography.com/66402/cs/16808/ Sorting algorithms and Methods Merge sort Sorting algorit​ hms Metho​ ds function merge_sort(list m) Bubble sort Exchanging ​ ​ ​ // Base case. A list of zero or one elements is sorted, by definit​ ion. Heapsort Selection ​ ​ ​ if length of m ≤ 1 then Insertion sort Insertion ​ ​ ​ ​ ​ ​ ​ r​ eturn m Introsort Partiti​ oning & Selection ​ ​ ​ // Recursive case. First, divide the list into Merge sort Merging equal-s​ ized sublists Patience sorting Insertion & Selection ​ ​ ​ // consisting of the first half and second half of Quicksort Partiti​ oning the list. Selection sort Selection ​ ​ ​ // This assumes lists start at index 0. ​ ​ ​ Timsort Insertion & Merging var left := empty list ​ ​ ​ var right := empty list Unshuffle sort Distrib​ ution and Merge ​ ​ ​ for each x with index i in m do ​ ​ ​ ​ ​ ​ ​ if i < (length of m)/2 then Best and Worst Case ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ add x to left Algor​ ithms Best Case Worst Case ​ ​ ​ ​ ​ ​ ​ else Bogosort n ∞ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ add x to right Bubble sort n n2 ​ ​ ​ // Recursi​ vely sort both sublists. Bucket sort (uniform keys) - n2k ​ ​ ​ left := merge_s​ ort​ (left) ​ ​ ​ r​ ight := merge_s​ ort​ (ri​ ght) Heap sort n log n n log n ​ ​ ​ // Then merge the now-sorted sublists. Insertion sort n n2 ​ ​ ​ r​ eturn merge(l​ eft, right) Merge sort n log n n log n 2 Quick sort n log n n Bogosort Selection sort n2 n2 while not isInOrder(deck): Shell sort n log n n4/3 ​ ​ ​ s​ huf​ fle​ (deck) Spreadsort n n(k/s+d) Timsort n n log n Bucket sort Unshuffle sort n kn function bucketSort(array, n) is ​ b​ uckets ← new array of n empty lists Insertion sort ​ for i = 0 to (length​ (ar​ ray​ )-1) do function insertionSortR(array A, int n) ​ ​ ​ i​ nsert array[i] into buckets​ [ms​ bit​ s(a​ rra​ y[i], k)] ​ ​ ​ ​ if n>0 ​ for i = 0 to n - 1 do ​ ​ ​ ​ ​ ​ ​ i​ nse​ rti​ onS​ ort​ R(A​ ,n-1) ​ ​ ​ n​ ext​ Sor​ t(b​ uck​ ets​ [i]); ​ ​ ​ ​ ​ ​ ​ x ← A[n] ​ r​ eturn the concate​ nation of buckets​ [0], ...., ​ ​ ​ ​ ​ ​ ​ j ← n-1 buckets​ [n-1] ​ ​ ​ ​ ​ ​ ​ w​ hile j >= 0 and A[j] > x ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A​ [j+1] ← A[j] Resources ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ j ← j-1 https:/​ /en​ .wi​ kip​ edi​ a.or​ g/​ wik​ i/S​ ort​ ing​ _al​ gor​ ith​ m#C​ omp​ ari​ son​ _of​ _al​ gor​ ithms ​ ​ ​ ​ ​ ​ ​ end while http://​ big​ och​ eat​ she​ et.com ​ ​ ​ ​ ​ ​ ​ A​ [j+1] ← x ​ ​ ​ ​ end if end function By pryl Published 27th August, 2018. Sponsored by CrosswordCheats.com cheatography.com/pryl/ Last updated 27th August, 2018. Learn to solve cryptic crosswords! Page 1 of 2. http://crosswordcheats.com Sorting algorithms Cheat Sheet by pryl via cheatography.com/66402/cs/16808/ Sorting algorithm complex​ ities Bubble sort (cont) Algor​ ithms Average Case Memory end procedure complex​ ity Bitonic sorter log2 n n log2 n Quicksort Bogosort n × n! 1 algorithm quicksort(A, lo, hi) is Bubble sort n2 1 ​ ​ ​ if lo < hi then ​ ​ ​ ​ ​ ​ ​ p := partiti​ on(A, lo, hi) Bucket sort (uniform n+k nk keys) ​ ​ ​ ​ ​ ​ ​ q​ uic​ kso​ rt(A, lo, p - 1 ) ​ ​ ​ ​ ​ ​ ​ q​ uic​ kso​ rt(A, p + 1, hi) Burstsort n(k/d) n(k/d) algorithm partiti​ on(A, lo, hi) is Counting sort n+r n+r ​ ​ ​ p​ ivot := A[hi] Heap sort n log n 1 ​ ​ ​ i := lo Insertion sort n2 1 ​ ​ ​ for j := lo to hi - 1 do Introsort n log n log n ​ ​ ​ ​ ​ ​ ​ if A[j] < pivot then LSD Radix Sort n(k/d) n+2d ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ swap A[i] with A[j] ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Merge sort n log n n i := i + 1 ​ ​ ​ swap A[i] with A[hi] MSD Radix Sort (in- n(k/d) 2d ​ ​ ​ ​ place) return i Patience sort - n Selection sort Pigeonhole sort n+2k 2k procedure selection sort Quicksort n log n log n ​ ​ list : array of items Selection sort n2 1 ​ ​ n : size of list Shell sort Depends on gap 1 ​ ​ for i = 1 to n - 1 sequence ​ ​ / set current element as minimum / Spaghetti sort n n2 ​ ​ ​ ​ ​ min = i Spreadsort n(k/d) (k/d)2d ​ Stooge sort n(log 3/log1.5) n ​ ​ ​ ​ ​ / check the element to be minimum / ​ ​ ​ ​ ​ for j = i+1 to n Timsort n log n n ​ ​ ​ ​ ​ ​ ​ ​ if list[j] < list[min] then Bubble sort ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ min = j; ​ ​ ​ ​ ​ ​ ​ ​ end if procedure bubbleSort( A : list of sortable items ) ​ ​ ​ ​ ​ end for ​ ​ ​ n = length(A) ​ ​ ​ ​ ​ / swap the minimum element with the current ​ ​ ​ r​ epeat element/ ​ ​ ​ ​ ​ ​ ​ s​ wapped = false ​ ​ ​ ​ ​ if indexMin != i then ​ ​ ​ ​ ​ ​ ​ for i = 1 to n-1 inclusive do ​ ​ ​ ​ ​ ​ ​ ​ swap list[min] and list[i] ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ if A[i-1] > A[i] then ​ ​ ​ ​ ​ end if ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ s​ wap​ (A[​ i-1], A[i]) ​ ​ end for ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ s​ wapped = true ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ end if end procedure ​ ​ ​ ​ ​ ​ ​ end for ​ ​ ​ ​ ​ ​ ​ n = n - 1 ​ ​ ​ u​ ntil not swapped By pryl Published 27th August, 2018. Sponsored by CrosswordCheats.com cheatography.com/pryl/ Last updated 27th August, 2018. Learn to solve cryptic crosswords! Page 2 of 2. http://crosswordcheats.com.
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