static void MaxHeapify(SortingArray array, int n, int i)
{
int largest = i;
int l = 2 * i + 1;
int r = 2 * i + 2;
if (l < n)
{
if (array.IsBigger(l, largest))
{
largest = l;
}
Updated(array);
}
if (r < n)
{
if (array.IsBigger(r, largest))
{
largest = r;
}
Updated(array);
}
if (largest != i)
{
array.Swap(i, largest);
Updated(array);
MaxHeapify(array, n, largest);
}
}
public Drawer(SortingArray arrayToDraw, Graphics graph, RectangleF drawingArea)
{
NextFrameDrawings = new Dictionary <int, DrawingOptions>();
this.arrayToDraw = arrayToDraw;
this.graph = graph;
this.drawingArea = drawingArea;
}
public static void ShellSort(SortingArray array)
{
int distance = array.Length / 2;
while (distance > 1)
{
for (int i = distance; i < array.Length; i++)
{
int j = i;
while (j >= 0)
{
Updated(array);
j -= distance;
if (array.IsBigger(j, j + distance))
{
array.Swap(j, j + distance);
}
else
{
break;
}
}
}
distance = (distance + 1) / 2;
}
InsertionSort(array);
}
public static void CocktailSort(SortingArray array)
{
int left = 0;
int right = array.Length - 1;
while (left < right)
{
for (int i = left; i < right; i++)
{
if (array.IsBigger(i, i + 1))
{
array.Swap(i, i + 1);
}
Updated(array);
}
for (int i = right; i > left; i--)
{
if (array.IsSmaller(i, i - 1))
{
array.Swap(i, i - 1);
}
Updated(array);
}
left++;
right--;
}
}
public static void OddEvenSort(SortingArray array)
{
var sorted = false;
while (!sorted)
{
sorted = true;
for (var i = 1; i < array.Length - 1; i += 2)
{
if (array.IsBigger(i, i + 1))
{
array.Swap(i, i + 1);
sorted = false;
}
Updated(array);
}
for (var i = 0; i < array.Length - 1; i += 2)
{
if (array.IsBigger(i, i + 1))
{
array.Swap(i, i + 1);
sorted = false;
}
Updated(array);
}
}
}
static void QuickSortRecursion(SortingArray array, int left, int right)
{
if (left < right)
{
int pivot = right;
int l = left;
int r = right;
while (l < r)
{
if (array.IsBigger(l, pivot))
{
while (l < r && array.IsBiggerOrEqual(r, pivot))
{
r--;
Updated(array);
}
array.Swap(l, r);
}
l++;
Updated(array);
}
if (l > left)
{
QuickSortRecursion(array, left, l - 1);
}
if (r < right)
{
array.Swap(r, pivot);
QuickSortRecursion(array, r, right);
}
}
}
static void BitonicCompare(SortingArray array, int source, int destination, bool direction)
{
if (direction == array.IsBigger(source, destination))
{
array.Swap(source, destination);
}
Updated(array);
}
public static void GenerateReversed(SortingArray array)
{
for (int i = 0; i < array.Length; i++)
{
array.Modify(i, array.Length - i);
Updated(array);
}
}
public static void GenerateRandomAscending(SortingArray array)
{
for (int i = 0; i < array.Length; i++)
{
StandardGenerator rand = new StandardGenerator();
int value = rand.Next(i, array.Length) + 1;
array.Modify(i, value);
Updated(array);
}
}
public static void GenerateRandom(SortingArray array)
{
for (int i = 0; i < array.Length; i++)
{
StandardGenerator rand = new StandardGenerator();
int val = rand.Next(1, array.Length + 1);
array.Modify(i, val);
Updated(array);
}
}
public static void Shuffle(SortingArray array)
{
for (int i = 0; i < array.Length; i++)
{
StandardGenerator rand = new StandardGenerator();
int pos = rand.Next(0, array.Length);
array.Swap(i, pos);
Updated(array);
}
}
public void StartAsync(SortingArray array, Algorithm algorithm)
{
if (!IsWorking)
{
currentAlgorithm = algorithm;
currentArray = array;
workThread = new Thread(DoWork);
workThread.Start();
}
}
static void BitonicSortRecursion(SortingArray array, int index, int length, bool direction)
{
if (length > 1)
{
int median = (length / 2);
BitonicSortRecursion(array, index, median, true);
BitonicSortRecursion(array, index + median, median, false);
BitonicMerge(array, index, length, direction);
}
}
public static void MaxHeapSort(SortingArray array)
{
for (int i = array.Length / 2 - 1; i >= 0; i--)
{
MaxHeapify(array, array.Length, i);
}
for (int i = array.Length - 1; i >= 0; i--)
{
array.Swap(0, i);
Updated(array);
MaxHeapify(array, i, 0);
}
}
static void BitonicMerge(SortingArray array, int index, int length, bool direction)
{
if (length > 1)
{
int median = (length / 2);
for (int i = index; i < index + median; i++)
{
BitonicCompare(array, i, i + median, direction);
}
BitonicMerge(array, index, median, direction);
BitonicMerge(array, index + median, median, direction);
}
}
public static void BubbleSort(SortingArray array)
{
for (int i = array.Length - 1; i >= 0; i--)
{
for (int j = 0; j < i; j++)
{
if (array.IsBigger(j, j + 1))
{
array.Swap(j, j + 1);
}
Updated(array);
}
}
}
public static void GenerateCubic(SortingArray array)
{
double a = array.Length / 2;
double n = 1 / (a * a);
for (int x = 0; x < array.Length; x++)
{
double t = x - a;
int y = Math.Min(array.Length, (int)(n * (t * t * t) + a) + 1);
array.Modify(x, y);
Updated(array);
}
Shuffle(array);
}
public static void OptimizedCocktailSort(SortingArray array)
{
int left = 0;
int right = array.Length - 1;
while (left < right)
{
int nextLeft = right;
int nextRight = left;
bool sorted = true;
for (int i = left; i < right; i++)
{
if (array.IsBigger(i, i + 1))
{
array.Swap(i, i + 1);
sorted = false;
nextRight = i;
}
Updated(array);
}
if (sorted)
{
break;
}
right = nextRight;
for (int i = right; i > left; i--)
{
if (array.IsSmaller(i, i - 1))
{
array.Swap(i, i - 1);
sorted = false;
nextLeft = i;
}
Updated(array);
}
if (sorted)
{
break;
}
left = nextLeft;
}
}
public static void GenerateSortedAndShuffleNPercent(SortingArray array, int chance)
{
GenerateSorted(array);
for (int i = 0; i < array.Length; i++)
{
StandardGenerator rand = new StandardGenerator();
int randNum = rand.Next(101);
if (randNum <= chance)
{
int pos = rand.Next(array.Length);
array.Swap(i, pos);
Updated(array);
}
}
}
public static void Generate8Blocked(SortingArray array)
{
double d = array.Length / 8.0;
double val = d;
for (int i = 0; i < array.Length; i++)
{
if (i >= val)
{
val += d;
}
array.Modify(i, (int)val);
Updated(array);
}
Shuffle(array);
}
public static void SelectionSort(SortingArray array)
{
for (int i = array.Length - 1; i > 0; i--)
{
int biggest = 0;
for (int j = 0; j <= i; j++)
{
if (array.IsBiggerOrEqual(j, biggest))
{
biggest = j;
}
Updated(array);
}
array.Swap(biggest, i);
Updated(array);
}
}
public static Color GetColor(SortingArray array, int pos, DrawingColor color)
{
switch (color)
{
case DrawingColor.Default:
return(GetDefaultColor(array, pos));
case DrawingColor.Selected:
return(GetSelectedColor(array, pos));
case DrawingColor.Swapped:
return(GetSwappedColor(array, pos));
case DrawingColor.Special:
return(GetSpecialColor(array, pos));
}
return(Color.WhiteSmoke);
}
public static void InsertionSort(SortingArray array)
{
for (int i = 1; i < array.Length; i++)
{
for (int j = i; j > 0; j--)
{
if (array.IsBigger(j - 1, j))
{
array.Swap(j - 1, j);
}
else
{
Updated(array);
break;
}
Updated(array);
}
}
}
public static void CombSort(SortingArray array)
{
int distance = (int)(array.Length / 1.3);
while (distance > 1)
{
for (int i = 0; i < array.Length - distance; i++)
{
if (array.IsBigger(i, i + distance))
{
array.Swap(i, i + distance);
}
Updated(array);
}
distance = (int)(distance / 1.3);
}
OptimizedBubbleSort(array);
}
public static void OptimizedBubbleSort(SortingArray array)
{
for (int i = array.Length - 1; i >= 0; i--)
{
bool sorted = true;
for (int j = 0; j < i; j++)
{
if (array.IsBigger(j, j + 1))
{
array.Swap(j, j + 1);
sorted = false;
}
Updated(array);
}
if (sorted)
{
break;
}
}
}
static void MergeSortRecursion(SortingArray array, int[] temp, int left, int right)
{
if (left < right)
{
int len = right - left + 1;
int mid = left + len / 2;
MergeSortRecursion(array, temp, left, mid - 1);
MergeSortRecursion(array, temp, mid, right);
int p1 = left;
int p2 = mid;
for (int i = 0; i < len; i++)
{
bool first = true;
if ((p1 >= mid) | (p2 <= right && array.IsBigger(p1, p2)))
{
first = false;
}
if (first)
{
temp[i] = array.Get(p1);
p1++;
}
else
{
temp[i] = array.Get(p2);
p2++;
}
Updated(array);
}
for (int i = 0; i < len; i++)
{
array.Modify(left + i, temp[i]);
Updated(array);
}
}
}
static Color GetSpecialColor(SortingArray array, int pos)
{
switch (style)
{
case DrawingStyle.Default:
return(DefaultSpecialColor);
case DrawingStyle.Rainbow:
return(RainbowSpecialColor(array.Get(pos), array.Length - 1));
case DrawingStyle.DistanceBased:
return(DistanceSpecialColor());
case DrawingStyle.Monochrome:
return(Color.White);
case DrawingStyle.Custom:
return(CustomSpecialColor);
default:
return(Color.Gray);
}
}
static Color GetDefaultColor(SortingArray array, int pos)
{
switch (style)
{
case DrawingStyle.Default:
return(DefaultDefaultColor);
case DrawingStyle.Rainbow:
return(RainbowDefaultColor(array.Get(pos), array.Length - 1));
case DrawingStyle.DistanceBased:
return(DistanceDefaultColor(array.DistanceToSortedPosition(pos), array.Length));
case DrawingStyle.Monochrome:
return(Color.LightSlateGray);
case DrawingStyle.Custom:
return(CustomDefaultColor);
default:
return(Color.WhiteSmoke);
}
}
static Color GetSelectedColor(SortingArray array, int pos)
{
switch (style)
{
case DrawingStyle.Default:
return(DefaultSelectedColor);
case DrawingStyle.Rainbow:
return(RainbowSelectedColor(array.Get(pos), array.Length - 1));
case DrawingStyle.DistanceBased:
return(DistanceSelectedColor(array.DistanceToSortedPosition(pos), array.Length));
case DrawingStyle.Monochrome:
return(Color.LightGray);
case DrawingStyle.Custom:
return(CustomSelectedColor);
default:
return(Color.LightGray);
}
}
static Color GetSwappedColor(SortingArray array, int pos)
{
switch (style)
{
case DrawingStyle.Default:
return(DefaultSwappedColor);
case DrawingStyle.Rainbow:
return(RainbowSwappedColor());
case DrawingStyle.DistanceBased:
return(DistanceSwappedColor());
case DrawingStyle.Monochrome:
return(Color.White);
case DrawingStyle.Custom:
return(CustomSwappedColor);
default:
return(Color.LightGray);
}
}