Refactored bogo sort and bubble sort

This commit is contained in:
nik 2018-04-09 15:24:16 +03:00
parent 65361a4445
commit b01c2cf2c6
5 changed files with 127 additions and 142 deletions

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@ -1,68 +0,0 @@
package Sorts;
import java.util.Random;
public class BogoSort {
private static <T> void swap(T array[], int first, int second){
T randomElement = array[first];
array[first] = array[second];
array[second] = randomElement;
}
private static <T extends Comparable<T>> boolean isSorted(T array[]){
for(int i = 0; i<array.length-1; i++){
if(array[i].compareTo(array[i+1]) > 0) return false;
}
return true;
}
// Randomly shuffles the array
private static <T> void nextPermutation(T array[]){
int length = array.length;
Random random = new Random();
for (int i = 0; i < array.length; i++) {
int randomIndex = i + random.nextInt(length - i);
swap(array, randomIndex, i);
}
}
public static <T extends Comparable<T>> void bogoSort(T array[]) {
while(!isSorted(array)){
nextPermutation(array);
}
}
// Driver Program
public static void main(String[] args)
{
// Integer Input
int[] arr1 = {4,23,6,78,1,54,231,9,12};
int last = arr1.length;
Integer[] array = new Integer[last];
for (int i=0;i<last;i++) {
array[i] = arr1[i];
}
bogoSort(array);
// Output => 1 4 6 9 12 23 54 78 231
for(int i=0; i<last; i++)
{
System.out.print(array[i]+"\t");
}
System.out.println();
// String Input
String[] array1 = {"c", "a", "e", "b","d"};
last = array1.length;
bogoSort(array1);
//Output => a b c d e
for(int i=0; i<last; i++)
{
System.out.print(array1[i]+"\t");
}
}
}

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@ -1,70 +0,0 @@
/**
*
* @author Varun Upadhyay (https://github.com/varunu28)
*
*/
class BubbleSort
{
/**
* This method implements the Generic Bubble Sort
*
* @param array The array to be sorted
* @param last The count of total number of elements in array
* Sorts the array in increasing order
**/
public static <T extends Comparable<T>> void BS(T array[], int last) {
//Sorting
boolean swap;
do
{
swap = false;
for (int count = 0; count < last-1; count++)
{
int comp = array[count].compareTo(array[count + 1]);
if (comp > 0)
{
T temp = array[count];
array[count] = array[count + 1];
array[count + 1] = temp;
swap = true;
}
}
last--;
} while (swap);
}
// Driver Program
public static void main(String[] args)
{
// Integer Input
int[] arr1 = {4,23,6,78,1,54,231,9,12};
int last = arr1.length;
Integer[] array = new Integer[last];
for (int i=0;i<last;i++) {
array[i] = arr1[i];
}
BS(array, last);
// Output => 1 4 6 9 12 23 54 78 231
for(int i=0; i<last; i++)
{
System.out.print(array[i]+"\t");
}
System.out.println();
// String Input
String[] array1 = {"c", "a", "e", "b","d"};
last = array1.length;
BS(array1, last);
//Output => a b c d e
for(int i=0; i<last; i++)
{
System.out.print(array1[i]+"\t");
}
}
}

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@ -3,8 +3,14 @@ package sort;
import static sort.SortUtils.less;
import static sort.SortUtils.print;
public class BinaryTreeSort{
/**
*
* @author Podshivalov Nikita (https://github.com/nikitap492)
*
* @see SortAlgorithm
*
*/
public class BinaryTreeSort implements SortAlgorithm{
interface TreeVisitor<T extends Comparable<T>> {
void visit(Node<T> node);
@ -58,7 +64,8 @@ public class BinaryTreeSort{
}
private <T extends Comparable<T>> T[] sort(T[] array) {
@Override
public <T extends Comparable<T>> T[] sort(T[] array) {
Node<T> root = new Node<>(array[0]);
for (int i = 1; i < array.length; i++) {
@ -68,7 +75,6 @@ public class BinaryTreeSort{
root.traverse(new SortVisitor<>(array));
return array;
}

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@ -0,0 +1,59 @@
package sort;
import java.util.Random;
import static sort.SortUtils.*;
/**
*
* @author Podshivalov Nikita (https://github.com/nikitap492)
*
* @see SortAlgorithm
*
*/
public class BogoSort implements SortAlgorithm{
private static final Random random = new Random();
private static <T extends Comparable<T>> boolean isSorted(T array[]){
for(int i = 0; i<array.length - 1; i++){
if(less(array[i + 1], array[i])) return false;
}
return true;
}
// Randomly shuffles the array
private static <T> void nextPermutation(T array[]){
int length = array.length;
for (int i = 0; i < array.length; i++) {
int randomIndex = i + random.nextInt(length - i);
swap(array, randomIndex, i);
}
}
public <T extends Comparable<T>> T[] sort(T array[]) {
while(!isSorted(array)){
nextPermutation(array);
}
return array;
}
// Driver Program
public static void main(String[] args) {
// Integer Input
Integer[] integers = {4, 23, 6, 78, 1, 54, 231, 9, 12};
BogoSort bogoSort = new BogoSort();
// print a sorted array
print(bogoSort.sort(integers));
// String Input
String[] strings = {"c", "a", "e", "b","d"};
print(bogoSort.sort(strings));
}
}

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@ -0,0 +1,58 @@
package sort;
import static sort.SortUtils.print;
import static sort.SortUtils.swap;
/**
*
* @author Varun Upadhyay (https://github.com/varunu28)
* @author Podshivalov Nikita (https://github.com/nikitap492)
*
* @see SortAlgorithm
*/
class BubbleSort implements SortAlgorithm{
/**
* This method implements the Generic Bubble Sort
*
* @param array The array to be sorted
* Sorts the array in increasing order
**/
@Override
public <T extends Comparable<T>> T[] sort(T array[]) {
int last = array.length;
//Sorting
boolean swap;
do {
swap = false;
for (int count = 0; count < last-1; count++) {
int comp = array[count].compareTo(array[count + 1]);
if (comp > 0) {
swap(array, count, count + 1);
swap = true;
}
}
last--;
} while (swap);
return array;
}
// Driver Program
public static void main(String[] args) {
// Integer Input
Integer[] integers = {4,23,6,78,1,54,231,9,12};
BubbleSort bubbleSort = new BubbleSort();
bubbleSort.sort(integers);
// Output => 1 4 6 9 12 23 54 78 231
print(integers);
// String Input
String[] strings = {"c", "a", "e", "b","d"};
//Output => a b c d e
print(bubbleSort.sort(strings));
}
}