Comb sort: Sorting by Exchanging

Comb sort:梳排序

Animation

Complexity

Java program 1: Using Comparable

/**
* User: >_<
* Date: 11/12/15
* Time: 9:23 AM
*/

public class CombSortUsingComparable {

public static <E extends Comparable<? super E>> void comb_sort(E[] input) {
int gap = input.length;
boolean swapped = true;
while (gap > 1 || swapped) {
if (gap > 1) {
gap = (int) (gap * 0.8);
}
int i = 0;
swapped = false;
while (i + gap < input.length) {
if (input[i].compareTo(input[i + gap]) > 0) {
E t = input[i];
input[i] = input[i + gap];
input[i + gap] = t;
swapped = true;
}
i++;
}
}
}

public static void main(String[] args) {

//Prepare the data
Integer[] number = {503,87,512,61,908,170,897,275,653,426,154,509,612,677,765,703};

//Output unsorted Keys
System.out.println("Unsorted Ks:");
for(int i=1; i<=number.length; i++){
System.out.println(i+":"+number[i-1]);
}
System.out.println();

//Kernel of the Algorithm!
comb_sort(number);

//Output sorted Keys
System.out.println("Sorted Ks:");
for(int i=1; i<=number.length; i++){
System.out.println(i+":"+number[i-1]);
}

}
}

Java program 2

/**
* User: >_<
* Date: 11/12/15
* Time: 9:53 AM
*/

public class CombSort {

public static void comb_sort(int[] input) {
int gap = input.length;
boolean swapped = true;
while (gap > 1 || swapped) {
if (gap > 1) {
gap = (int) (gap * 0.8);
}
int i = 0;
swapped = false;
while (i + gap < input.length) {
if (input[i] > input[i + gap]) {
int t = input[i];
input[i] = input[i + gap];
input[i + gap] = t;
swapped = true;
}
i++;
}
}
}

public static void main(String[] args) {

//Prepare the data
int[] number = {503,87,512,61,908,170,897,275,653,426,154,509,612,677,765,703};

//Output unsorted Keys
System.out.println("Unsorted Ks:");
for(int i=1; i<=number.length; i++){
System.out.println(i+":"+number[i-1]);
}
System.out.println();

//Kernel of the Algorithm!
comb_sort(number);

//Output sorted Keys
System.out.println("Sorted Ks:");
for(int i=1; i<=number.length; i++){
System.out.println(i+":"+number[i-1]);
}

}

}

Outputs

Unsorted Ks:
1:503
2:87
3:512
4:61
5:908
6:170
7:897
8:275
9:653
10:426
11:154
12:509
13:612
14:677
15:765
16:703

Sorted Ks:
1:61
2:87
3:154
4:170
5:275
6:426
7:503
8:509
9:512
10:612
11:653
12:677
13:703
14:765
15:897
16:908

Reference