用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 `Xeiz'~f8
插入排序: nJYIkfdA
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package org.rut.util.algorithm.support; EBL-+%J8
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import org.rut.util.algorithm.SortUtil; @x!+_z
/** 0k5 uqGLXe
* @author treeroot \JR^uJ{Y
* @since 2006-2-2 4:**d[|1
* @version 1.0 e9/Mjq\
*/
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public class InsertSort implements SortUtil.Sort{ %;u"2L0@
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/* (non-Javadoc) W?kJ+1"(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1k)pJzsc
*/ bd}[X'4d
public void sort(int[] data) { 0,@^<G8?
int temp; Svo\+S
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6yAZvX
} t54?<-
} 2,g4yXws5
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冒泡排序: k #\j \t-
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package org.rut.util.algorithm.support; o6~JAvw
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import org.rut.util.algorithm.SortUtil; }f}? |&q
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/** }><[6Uz%
* @author treeroot IqepR
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* @since 2006-2-2 PXtF#,roP
* @version 1.0 *2vp2xMA@
*/ ~G=E
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public class BubbleSort implements SortUtil.Sort{ U~?mW,iRL
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/* (non-Javadoc) zd!%7
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EVaHb;
*/ K*,,j\Q.
public void sort(int[] data) { LCj3{>{/=
int temp; /5L\:eX%
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'PFjZGaKR
if(data[j] SortUtil.swap(data,j,j-1); q`L)^In"
} ae@!M
} E 11C@%
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} (5th
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选择排序: wWf_d jd
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package org.rut.util.algorithm.support; ?Y8hy|`
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import org.rut.util.algorithm.SortUtil; oyk&]'>
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/** iOb7g@=
* @author treeroot m2l9([u=^
* @since 2006-2-2 )wD/<7;
* @version 1.0 _
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*/ (^g XO
public class SelectionSort implements SortUtil.Sort { A! HJ
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/* cqs.[0 z#B
* (non-Javadoc) 7
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* O_.!qk1R
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]W2#8:i
*/ ,tyPZR_
public void sort(int[] data) { @^-Y&N!b=
int temp; #s\kF *
for (int i = 0; i < data.length; i++) { SRk!HuXh
int lowIndex = i; UyV5A
for (int j = data.length - 1; j > i; j--) { $)9|"q6
if (data[j] < data[lowIndex]) { "cBqZzkk9j
lowIndex = j; @b^$h:H
} 4L{]!dox
} > 3(,s^
SortUtil.swap(data,i,lowIndex); x@bqPZ t
} oZ tCx
} q%$p56\?3
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} ~UO}PI`C
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Shell排序: Q#qfuwz
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package org.rut.util.algorithm.support; }Kp<w,
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import org.rut.util.algorithm.SortUtil; 0}`-vOLd-
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/** Xa?igbgAwx
* @author treeroot em0Y' J
* @since 2006-2-2 W
* @version 1.0 2;:p
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*/ ?fq!BV
public class ShellSort implements SortUtil.Sort{ u|AMqS
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/* (non-Javadoc) HKT, 5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oS9Od8
*/ ~@xPoD&
public void sort(int[] data) { .n YlYY'
for(int i=data.length/2;i>2;i/=2){ &V(6N%A^U
for(int j=0;j insertSort(data,j,i); vS0 ii
} mR
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} x`@`y7(
insertSort(data,0,1); Ny$3$5/
} GQ@mQ=i
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/** I{[Z
* @param data .43cI(
* @param j Gbclu.4
* @param i Vym0|cW
*/ w"dKOdY
private void insertSort(int[] data, int start, int inc) { ~ *"iLf@,
int temp; YCxwIzIR
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); V|sV U
} Khc^q*|C)
} gVzIEE25
} ~:f..|JM
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} ZBY2,%nAo
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快速排序: \$Wpt#V
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package org.rut.util.algorithm.support; U887@-!3
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import org.rut.util.algorithm.SortUtil; 3Z*o5@RI
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/** J9]cs?`)
* @author treeroot z5M6
* @since 2006-2-2 -40X3
* @version 1.0 _ ~\} fY
*/ pl1CPxSdO
public class QuickSort implements SortUtil.Sort{ >JS^yVk
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/* (non-Javadoc) <YU4RZ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YkB@fTTS
*/ 1eshuL
public void sort(int[] data) { *.|%uf.
quickSort(data,0,data.length-1); t $Rc
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} BPt? 3tC
private void quickSort(int[] data,int i,int j){ 1Pw1TO"Z
int pivotIndex=(i+j)/2; *w*>\ZhOm
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SortUtil.swap(data,pivotIndex,j); [yQ%g;m
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int k=partition(data,i-1,j,data[j]); XJ3sqcS
SortUtil.swap(data,k,j); .|R4E
if((k-i)>1) quickSort(data,i,k-1); N\|z{vn
if((j-k)>1) quickSort(data,k+1,j); bK~Toz<k
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} |H_WY#
/** n^ fUKi*;
* @param data N=2T~M 1
* @param i `}=R
* @param j Qm[s"pM
* @return hd9HM5{p
*/ %ZWt 45A
private int partition(int[] data, int l, int r,int pivot) { 9ABU^ig
do{ HV/:OCK
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Po@;PR=
SortUtil.swap(data,l,r); =r ^_D=
} ~YCH5,
while(l SortUtil.swap(data,l,r); o68i0aFW
return l; Wmcd{MOS
} EC,`t*<
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} w($a'&d`0
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改进后的快速排序: iUR ij@
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package org.rut.util.algorithm.support; X=]utn
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import org.rut.util.algorithm.SortUtil; IV. })8
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/** \uPzj_kU6
* @author treeroot 7mMGH(
* @since 2006-2-2 "*t6KXVaM
* @version 1.0 ZuGd{p$
*/ A<)n H=G&
public class ImprovedQuickSort implements SortUtil.Sort { 65~E<)UJ
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private static int MAX_STACK_SIZE=4096; /CsP@f_Gw
private static int THRESHOLD=10; 7<WS@-2I#
/* (non-Javadoc) ~CnnN[g(_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g_syGQ\
*/ <L qJg
public void sort(int[] data) { BK%B[f*[OA
int[] stack=new int[MAX_STACK_SIZE]; Dbn344s
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int top=-1; f- 9t
int pivot; 2n@`Og_0
int pivotIndex,l,r; [//i "Nm
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stack[++top]=0; ~bb6NP;'L
stack[++top]=data.length-1; P5_Ajb(@'
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while(top>0){ 4joE"H6
int j=stack[top--]; @s-P!uCaT
int i=stack[top--]; .i4aM;Qy
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pivotIndex=(i+j)/2; IXa~,a H71
pivot=data[pivotIndex]; *2a" 2o
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