Four kinds of sorting methods in Java using arrays

Source: Internet
Author: User

<1> quick sorting using arrays with sorting methods

<span style= "Font-family:simsun;font-size:18px;color: #000099;" >import java.util.Arrays; 2 public class test2{public           static void Main (string[] args) {                   int[] a={5,4,2,4,9,1};                   Arrays.sort (a);  Sort for                   (int i:a) {                           System.out.print (i);}                  }  } </span>
<2> bubble Sorting algorithm

public static int[] Bubblesort (int[] args) {//bubble sort algorithm for           (int. i=0;i<args.length-1;i++) {for                  (int j=i+1;j< args.length;j++) {                      if (Args[i]>args[j]) {                          int temp=args[i];                          ARGS[I]=ARGS[J];                          Args[j]=temp         ;         }}} return args;  

<3> Selection Sorting algorithm

<span style= "Font-family:simsun;font-size:18px;color: #000099;" >public static void Selectsort (Int[]a) {    int minindex=0;    int temp=0;    if ((a==null) | | | (a.length==0))        return;    The        minimum Data array for the for (int i=0;i<a.length-1;i++) {minindex=i;//unordered region subscript for        (intj=i+1;j<a.length;j++)        {            //Find the smallest data in the unordered area and save its array subscript            if (A[j]<a[minindex])            {                minindex=j;            }        }        if (minindex!=i)        {            //if the minimum position of the unordered area is not the default first data, then the interchange.            Temp=a[i];            A[i]=a[minindex];            a[minindex]=temp;}}}    </span>
<span style= "Font-family:simsun;font-size:24px;color: #3333ff;" ><strong><4> Insert Sort Algorithm </strong></span>
<span style= "Font-size:18px;color: #6600cc;" >public Static int[] Insertsort (int[] args) {if (args==null| | ARGS.LENGTH<2) {return args;}       for (int i=1;i<args.length;i++)   {for                (int j=i;j>0;j--) {                      if (args[j]<args[j-1])   {                              int TEMP=ARGS[J-1];                             ARGS[J-1]=ARGS[J];                             args[j]=temp;                                 } else break;                    }             }      return args;  }  </span>

Four kinds of sorting methods in Java using arrays

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