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。 >{)#|pWU
插入排序: +dpj?
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package org.rut.util.algorithm.support; Gqb-3ngH
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import org.rut.util.algorithm.SortUtil; tZ24}~da
/** KK3xz*W0
* @author treeroot Wk#-LkI
* @since 2006-2-2 t SLl'XeN
* @version 1.0 V>j`
*/ f9=X7"dzP
public class InsertSort implements SortUtil.Sort{ )KQv4\0y<
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/* (non-Javadoc) BU{V,|10a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .wn_e=lT
*/ tpzdYokh>
public void sort(int[] data) { RKb3=}
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int temp; m)2hl~o_
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wyEgm:Vt
} [!efQap
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冒泡排序: /4BXF4ksi,
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package org.rut.util.algorithm.support; =C2C~Xd
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import org.rut.util.algorithm.SortUtil; !+ hgKZ]
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/** t[ocp;Q
* @author treeroot T mE4p
* @since 2006-2-2 !h(0b*FUJ
* @version 1.0 UimZ/\r
*/ pg`;)@
public class BubbleSort implements SortUtil.Sort{ g7yHhF>%X
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/* (non-Javadoc) )% c)-c
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =qQQ^`^F'~
*/ `g1~ya(MC
public void sort(int[] data) { >~InO^R`5
int temp; Nn\\}R
for(int i=0;i for(int j=data.length-1;j>i;j--){ I+Cmj]M s0
if(data[j] SortUtil.swap(data,j,j-1); k~F/Ho+R&
} Vs(Zs[
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选择排序: rqo<Xt`
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package org.rut.util.algorithm.support; v> PHn69PU
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import org.rut.util.algorithm.SortUtil; tqC#_[~7
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/**
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* @author treeroot oABPGyv
* @since 2006-2-2 o`Brr:
* @version 1.0 #=3]bg
*/ 7[ji,.7
public class SelectionSort implements SortUtil.Sort { C(+BrIS*
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/* N^at{I6C
* (non-Javadoc) KPqI(
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~'mhC46d
*/ LvdMx]*SSr
public void sort(int[] data) { EHjhez
int temp; ri`|qy6! |
for (int i = 0; i < data.length; i++) { [AwE
int lowIndex = i; 1nmWL0
for (int j = data.length - 1; j > i; j--) { c:T P7"vG
if (data[j] < data[lowIndex]) { =Ji:nEl]z
lowIndex = j; dj]N59<
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SortUtil.swap(data,i,lowIndex); Ey%NqOs0#
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Shell排序: t]XJq
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package org.rut.util.algorithm.support; qo|iw+0Y
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import org.rut.util.algorithm.SortUtil; @I:&ozy }=
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/** 5Bk
* @author treeroot ;wZ.p"T9^
* @since 2006-2-2 fOAb?:D
* @version 1.0 ny}utO
*/ WF G/vzJ
public class ShellSort implements SortUtil.Sort{ rK wkj)
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/* (non-Javadoc) 6 H.Da]hk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y
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*/ Nx'j+>bz>y
public void sort(int[] data) { K6oLSr+EAK
for(int i=data.length/2;i>2;i/=2){ Hy'&x?F6
for(int j=0;j insertSort(data,j,i); (""&$BJQ|
} ^lj>v}4fkW
} ~ .-'pdz%
insertSort(data,0,1); 0jH2.d=
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/** , 88}5)b[
* @param data s]UeDZ<a
* @param j ?=&*6H_v
* @param i =j-{Mxb3
*/ 3E-&8x7uYR
private void insertSort(int[] data, int start, int inc) { j/&7L@Y
int temp; 7dZ!GX?\y
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \)*qW[C$a
} H#K|SSqY?
} ,H8Pmn?
} 7
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快速排序: PoZBiw@
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package org.rut.util.algorithm.support; A[MEtI=Q J
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import org.rut.util.algorithm.SortUtil; }dCnFZ{K3
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/** }J1#UH_E
* @author treeroot Tec6]
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* @since 2006-2-2 ?fGY,<c
* @version 1.0 c9V'Z d#
*/ D@e:Fu1\R
public class QuickSort implements SortUtil.Sort{ KC'{>rt7
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/* (non-Javadoc) %0QYkHdFR`
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "PPwJ/L(
*/ 2cL<`
public void sort(int[] data) { \Uiw:
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quickSort(data,0,data.length-1); +FI]0r
} $v,_8{ !
private void quickSort(int[] data,int i,int j){ (#~063N,#
int pivotIndex=(i+j)/2; +}]xuYzo
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SortUtil.swap(data,pivotIndex,j); p6p_B
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int k=partition(data,i-1,j,data[j]); pB`<4+"9
SortUtil.swap(data,k,j); o'G")o
if((k-i)>1) quickSort(data,i,k-1); <pCZ+Yv E"
if((j-k)>1) quickSort(data,k+1,j); 3f0RMk$pH
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} V.qB3V$
/** %y'#@%kO:S
* @param data %0 S0"t
* @param i 3~ylBJJ
* @param j }/=_
* @return t+t&eg
*/ HzV3O-Qz]
private int partition(int[] data, int l, int r,int pivot) { WukD|BCC
do{ _:J!
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); gwyz)CUkL
SortUtil.swap(data,l,r); {.v+ iSM
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while(l SortUtil.swap(data,l,r); S[Et!gj:
return l; F{v+z8nW
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改进后的快速排序: \7RP6o
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package org.rut.util.algorithm.support; i -+B{H
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import org.rut.util.algorithm.SortUtil; u?!p[y6
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/** O3S_P]{*ny
* @author treeroot uXXwMc<p
* @since 2006-2-2 ZDlMkHJ
* @version 1.0 {=TD^>?
*/ %%*t{0!H+
public class ImprovedQuickSort implements SortUtil.Sort { f -bVcWI
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private static int MAX_STACK_SIZE=4096; 7P=j2;7 v
private static int THRESHOLD=10; KdUmetx1
/* (non-Javadoc) |VIBSty2d
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k@^)>J^
*/ AkGCIn3
public void sort(int[] data) { n(&6E3ZcI
int[] stack=new int[MAX_STACK_SIZE]; WL<Cj_N_{H
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int top=-1; 2s~X
int pivot; K*>lq|iu
int pivotIndex,l,r; ^J?I-LG
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stack[++top]=0; $Ad 5hkz
stack[++top]=data.length-1; Ie4}F|#=
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while(top>0){ q*8^938
int j=stack[top--]; '6WaG
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int i=stack[top--]; .7"
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pivotIndex=(i+j)/2; T0i_X(_
pivot=data[pivotIndex]; WI' ;e4
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SortUtil.swap(data,pivotIndex,j); ):1NeJOFF
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do{ ;kY'DKL(
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !>+YEZ"
SortUtil.swap(data,l,r); b k 30d
} Z3)1!|#Q
while(l SortUtil.swap(data,l,r); Zj%l (OVq
SortUtil.swap(data,l,j); 6s@'z<Ct
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if((l-i)>THRESHOLD){ UT%^!@u
stack[++top]=i; 7*`cWT_X
stack[++top]=l-1; ki48]#p
} F.zn:y X5
if((j-l)>THRESHOLD){ 4 @ )|N'
stack[++top]=l+1; 1d,;e:=j
stack[++top]=j; =otJf~
} Nw*
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file://new InsertSort().sort(data); {fmSmD
insertSort(data); ^h1EE=E"
} L>
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/** :A.dlesv6
* @param data /Ii a >XY
*/ 4vQ]7`I.f
private void insertSort(int[] data) { 8SR ~{
int temp; r&U