希尔排序的时间复杂度是O(n^1.3)~O(n^2),空间复杂度是O(1)。
代码例如以下:
/**
* 源代码名称: ShellSort.java
* 日期:2014-08-11
* 程序功能:希尔排序
* 版权:CopyRight@A2BGeek
* 作者:A2BGeek
*/
public class ShellSort {
public void shellSort(int[] in) {
int length = in.length;
int span = length / 2;
int i, j;
while (span >= 1) {
// Selection Sort begin
for (i = span; i < length; i++) {
int tmp = in[i];
for (j = i - span; j >= 0 && tmp < in[j]; j -= span) {
in[j + span] = in[j];
}
in[j + span] = tmp;
}
// Selection Sort end
span /= 2;
printArray(in);
}
}
public void printArray(int[] in) {
for (int i : in) {
System.out.print(i + " ");
}
System.out.println();
}
public static void main(String[] args) {
int[] testCase = { 1, 3, 4, 10, 2, 5, 6, 7, 9, 11 };
ShellSort mShellSort = new ShellSort();
mShellSort.printArray(testCase);
mShellSort.shellSort(testCase);
mShellSort.printArray(testCase);
}
}
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