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import java.util.Scanner;

public class HeapSort {

private static int N;

public static void sort(int array[]) {

max_heapify(array);

for (int i = N; i > 0; i--) {

swap(array, 0, i);

N = N - 1;

maxheap(array, 0);

}

}

public static void max_heapify(int array[]) {

N = array.length - 1;

for (int i = N / 2; i > 0; i--) {

// if ((2*i)>N)

// i=0;

maxheap(array, i);

}

}

public static void maxheap(int arr[], int i) {

int left = 2 * i;

int right = 2 * i + 1;

int max = i;

if (left <= N && arr[left] > arr[i])

max = left;

if (right <= N && arr[right] > arr[max])

max = right;

if (max != i) {

swap(arr, i, max);

maxheap(arr, max);

/*

* for (int j=0;j<arr.length;j++){ System.out.print(arr[j]); }

* maxheap(arr, max);

*/

}

for (int j = 0; j < arr.length; j++) {

System.out.print(arr[j] + "\n");

}

}

public static void swap(int array[], int i, int j) {

int temp = array[i];

array[i] = array[j];

array[j] = temp;

System.out.print(" Sorted Element: " + array[j] + " " + array[i] + " ");

}

public static void main(String[] args) {

Scanner scan = new Scanner(System.in);

int n, i;

System.out.println("Enter array size");

n = scan.nextInt();

int array[] = new int[n];

System.out.println("\nEnter numbers");

for (i = 0; i < n; i++)

array[i] = scan.nextInt();

sort(array);

System.out.println("\nElements after sorting ");

for (i = 0; i < n; i++) {

System.out.print(array[i] + " ");

}

}

}