import java.util.Scanner;
class BubbleSort {
public static void main(String []args) {
int n, c, d, swap;
Scanner in = new Scanner(System.in);
System.out.println("Input number of integers to sort");
n = in.nextInt();
int array[] = new int[n];
System.out.println("Enter " + n + " integers");
for (c = 0; c < n; c++)
array[c] = in.nextInt();
for (c = 0; c < ( n - 1 ); c++) {
for (d = 0; d < n - c - 1; d++) {
if (array[d] > array[d+1]) /* For descending order use < */
{
swap = array[d];
array[d] = array[d+1];
array[d+1] = swap;
}
}
}
System.out.println("Sorted list of numbers:");
for (c = 0; c < n; c++)
System.out.println(array[c]);
}
}
2 Quicksort
class Quicksort
{
static void quicksort(int A[],int p,int r)
{
if (p < r)
{
int q = Partition(A, p, r);
quicksort(A, p, q-1);
quicksort(A, q+1 , r);
}
}
static int Partition(int A[],int p,int r)
{
int temp;
int x = A[r];
int i = p - 1;
for (int j=p;j<=r-1; j++)
{
if (A[j] <= x)
{
i = i + 1;
temp=A[i];
A[i]=A[j];
A[j]=temp;
}
}
temp=A[i+1];
A[i+1]=A[r];
A[r]=temp;
return i+1;
}
public static void main(String args[])
{
int A[]={23,16,78,9,11,112};
quicksort(A,0,A.length-1);
System.out.println("\n sorted array");
for(int i=0; i< A.length; i++)
{
System.out.println(A[i]+ "");
}
}
}
No comments:
Post a Comment