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87 lines
1.6 KiB
C#
87 lines
1.6 KiB
C#
/*
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* C# Program to Demonstrate Heap Sort
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*/
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using System;
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class heap
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{
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int[] r = { 2,5,1,10,6,9,3,7,4,8};
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public void hsort()
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{
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int i, t;
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for (i = 5; i >= 0; i--)
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{
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adjust(i, 9);
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}
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for (i = 8; i >= 0; i--)
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{
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t = r[i + 1];
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r[i + 1] = r[0];
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r[0] = t;
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adjust(0, i);
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}
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}
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private void adjust(int i, int n)
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{
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int t, j;
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try
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{
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t = r[i];
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j = 2 * i;
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while (j <= n)
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{
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if (j < n && r[j] < r[j + 1])
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j++;
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if (t >=r[j])
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break;
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r[j / 2] = r[j];
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j *= 2;
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}
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r[j / 2] = t;
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}
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catch (IndexOutOfRangeException e)
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{
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Console.WriteLine("Array Out of Bounds ", e);
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}
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}
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public void print()
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{
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for (int i = 0; i < 10; i++)
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{
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Console.WriteLine("{0}", r[i]);
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}
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}
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public static void Main()
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{
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heap obj = new heap();
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Console.WriteLine("Elements Before sorting : ");
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obj.print();
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obj.hsort();
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Console.WriteLine("Elements After sorting : ");
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obj.print();
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Console.Read();
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}
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}
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/*
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Elements Before Sorting :
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2
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5
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1
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10
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6
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9
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3
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7
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4
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8
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Elements After Sorting :
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10 |