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package testt;

import java.util.concurrent.Delayed;

public class lekprojekt {

public static void randomlyFillArray(int[] array, int a, int b) {
for (int i = 0; i < array.length; i++) {
array[i] = randomInt(a, b);
}
}

public static int randomInt(int a, int b) {
return (int) ((b - a + 1) * Math.random() + a); // math.random --> x € R(double) , 0 < x < 1

//förstår inte slumpningen...
}

//______________Försöker fixa in en quicksort_________*
static long QSjämf = 0;
public static void quickSort(int[] array, int low, int high) {
if (array == null || array.length == 0)
return;

if (low >= high)
return;

// pick the pivot
int middle = low + (high - low) /2;
// markerar pivoten till mittersa platsen
int pivot = array[middle];

// make left < pivot and right > pivot
int i = low, j = high;
while (i <= j) {
while (array[i] < pivot) {
i++;

}

while (array[j] > pivot) {
j--;

}

if (i <= j) {
int temp = array[i];
array[i] = array[j];
array[j] = temp;
i++;
j--;

}
QSjämf++;
}
if (low < j)
quickSort(array, low, j);

if (high > i)
quickSort(array, i, high);
}

//___________________________försöker fixa in en quicksort________*

static long SelSJämf = 0;
public static void SelectionSort(int[] array) {

for (int i = 0; i < array.length - 1; i++) {
SelSJämf++;
for (int j = i + 1; j < array.length; j++) {
SelSJämf++;
if (array[i] > array[j]) {
// ... Exchange elements
int temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
}
}
static long InsSJämf = 0;
public static void insertionSort(int[] array) {
int i, j, temp;
for (i = 1; i < array.length; i++) {
InsSJämf++;
temp = array[i];
j = i;
while (j > 0 && array[j - 1] > temp) {
InsSJämf++;
array[j] = array[j - 1];
j--;
}
array[j] = temp;
}
}
static long BubSJämf = 0;
public static void bubbleSort(int[] array) {
boolean swapped = true;
int j = 0;
int temp;
while (swapped) {
//BubSJämf++;
swapped = false;
j++;
for (int i = 0; i < array.length - j; i++) {
BubSJämf++;
if (array[i] > array[i + 1]) {
temp = array[i];
array[i] = array[i + 1];
array[i + 1] = temp;
swapped = true;
}
}
}
}

public static void main(String[] args) {
int antalBrickor = 6;
int topSlump = 4;
int botSlump = 2;
// int[] array500 = new int[500]; //These are my arrays that I should do the process for //each one.
// int[] array1000 = new int[1000];
// int[] array5000 = new int[5000];
// int[] array10000 = new int[10000];
// int[] array50000 = new int[50000];
// int[] array100000 = new int[100000];
// int[] array500000 = new int[500000];
// int[] array1000000 = new int[1000000];
for (int i = 0; i <= 4; i++) {

int[] array = new int[antalBrickor];
if (i == 1) {
randomlyFillArray(array, botSlump, topSlump);

long startTime = System.currentTimeMillis();
//TESTAR BARA QUICKSORT

SelectionSort(array);
long stopTime = System.currentTimeMillis();
long elapsedTime = stopTime - startTime;

// System.out.println("Sorteringstid i ms för SelectionSort för x integers : "
// + elapsedTime );
System.out.println(" Så här många jämförelser gjorde SelectionSort : " +SelSJämf);

}
else if (i == 2) {
randomlyFillArray(array, botSlump, topSlump);

long startTime = System.currentTimeMillis();

insertionSort(array);
long stopTime = System.currentTimeMillis();
long elapsedTime = stopTime - startTime;

// System.out.println("Sorteringstid i ms för InsertionSort för x integers : "
// + elapsedTime);
System.out.println(" Så här många jämförelser gjorde InsertionSort : " +InsSJämf);

}
else if (i == 3) {
randomlyFillArray(array, botSlump, topSlump);

long startTime = System.currentTimeMillis();

bubbleSort(array);
long stopTime = System.currentTimeMillis();
long elapsedTime = stopTime - startTime;

// System.out.println(" Sorteringstid i ms för BubbleSort för x integers : "
// + elapsedTime);
System.out.println(" Så här många jämförelser gjorde BubbleSort : " +BubSJämf);

}
//TESTING BELOW
else if (i == 4) {
randomlyFillArray(array, botSlump, topSlump);

long startTime = System.currentTimeMillis();

quickSort(array,0,antalBrickor-1);
long stopTime = System.currentTimeMillis();
long elapsedTime = stopTime - startTime;

System.out.println(" Sorteringstid i ms för Quicksort för x integers : "
+ elapsedTime);
System.out.println(" Så här många jämförelser gjorde quicksort : " +QSjämf);

}
//TESTING ABOVE
}

}
}

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