martes, 8 de noviembre de 2016

Shell Sort

Method Shell Sort

public class ShellSort {

private long[] data;
private int len;

public ShellSort(int max) {

data = new long[max];
len = 0;

}

public void insert(long value) {

data[len] = value;
len++;

}

public void display() {

for (int j = 0; j < len; j++) {

System.out.print(data[j] + " ");

}

System.out.println("");
}

public void shellSort() {

int inner, outer;
long temp;
// find initial value of h

int h = 1;

while (h <= len / 3) {

h = h * 3 + 1; // (1, 4, 13, 40, 121, ...)
}

while (h > 0) // decreasing h, until h=1
{
// h-sort the file
for (outer = h; outer < len; outer++) {

temp = data[outer];
inner = outer;

// one subpass (eg 0, 4, 8)
while (inner > h - 1 && data[inner - h] >= temp) {

data[inner] = data[inner - h];
inner -= h;

}

data[inner] = temp;
}

h = (h - 1) / 3; // decrease h
}
}

public static void main(String[] args) {

int maxSize = 10;
ShellSort arr = new ShellSort(maxSize);

for (int j = 0; j < maxSize; j++) {

long n = (int) (java.lang.Math.random() * 99);
arr.insert(n);

}

System.out.print("Unsorted List:\n");
arr.display();

arr.shellSort();

System.out.print("-------------------------\n");
System.out.print("Sorted List:\n");
arr.display();
}
}








--------------------Configuration: <Default>--------------------
Unsorted List:
30 8 86 63 89 38 71 94 79 64 
-------------------------
Sorted List:
8 30 38 63 64 71 79 86 89 94 

Process completed.

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