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。 3hq1yyec
插入排序: (3*UPZv
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package org.rut.util.algorithm.support; nEy]`
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import org.rut.util.algorithm.SortUtil; Y~n`~(
/** fn9#>~vrD
* @author treeroot s%;<O:x8o
* @since 2006-2-2 :G)<}j"sM
* @version 1.0 83.E0@$
*/ oJ78jGTnb
public class InsertSort implements SortUtil.Sort{ J<JBdk
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/* (non-Javadoc) KIL18$3J
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )qPSD2h
*/ GLKO]y
public void sort(int[] data) { 2r];V'r
int temp; he)ulB
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); # nfI%
} 7SI)1_%G
} ke/_k/
} W'_/6_c$!
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} EaS~`
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冒泡排序: =hw^P%Zn
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package org.rut.util.algorithm.support; U
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import org.rut.util.algorithm.SortUtil; "E*8h/4u
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/** {U
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* @author treeroot Nm8w/Q5D`
* @since 2006-2-2 Z|^MGyn
* @version 1.0 {e]NU<G ,
*/ 1&|Dsrj
public class BubbleSort implements SortUtil.Sort{ 2
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/* (non-Javadoc) kqB\xlS7k
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "@/ba!L+
*/ ]Sta]}VQ
public void sort(int[] data) { p[YWSjf
int temp; wL<j:>Ke[3
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~4s-S3YzaM
if(data[j] SortUtil.swap(data,j,j-1); v`{:~q*
} KR3-Hb4
} :'w?ye[e
} r#xk`a
} ?^3B3qqh9
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} f]}}yBte`
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选择排序: 5fHYc0
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package org.rut.util.algorithm.support; !C7<sZ`C
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import org.rut.util.algorithm.SortUtil; v7@H\x*
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/** ug6r]0]
* @author treeroot WzG07 2w
* @since 2006-2-2 *4#on>
* @version 1.0 [&n|\!
*/ gStY8Z!k
public class SelectionSort implements SortUtil.Sort { 1hNEkpL^a
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/* /v&`!nKu
* (non-Javadoc) Am7| /
* hCLk#_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TczXHT}G
*/ GUCM4jVT^
public void sort(int[] data) {
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int temp; mcMb*?]
for (int i = 0; i < data.length; i++) { Z90Fcp:R
int lowIndex = i; Xr2J:1pgg
for (int j = data.length - 1; j > i; j--) { 4GTrI@}3
if (data[j] < data[lowIndex]) { ,#%SK;1<
lowIndex = j; #5d8?n
} Ao!=um5D J
} ^%zNa6BL
SortUtil.swap(data,i,lowIndex); )b (X
} kt<@H11
} #! @m y
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} ,$i<@2/=m
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Shell排序: X0x_+b?
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package org.rut.util.algorithm.support; -CElk[u
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import org.rut.util.algorithm.SortUtil; [5LMt*Y
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/** Rc%PZ}es
* @author treeroot fSC.+,qk
* @since 2006-2-2 `g8tq
* @version 1.0 3It8&x:
*/ %f#\i#G<k
public class ShellSort implements SortUtil.Sort{ Jh(mbD
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/* (non-Javadoc) agTK=
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %((cFQ9
*/ T=yCN#cqQ`
public void sort(int[] data) { i\Q":4
for(int i=data.length/2;i>2;i/=2){ PE7t_iSV
for(int j=0;j insertSort(data,j,i);
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} j~$)c)h"
} 2E([#Pzb
insertSort(data,0,1); HqDa2q4
} (T2<!&0 @
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/** M->Kz{h?j
* @param data o7QK8#
* @param j tQ6| PV
* @param i tQCj)Ms 'X
*/ Z0z)
private void insertSort(int[] data, int start, int inc) { (aBP|rxg
int temp; sK[Nti0
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0Sz/c+ 6
} :!hk~#yvJ9
} DMRs}Yz6
} zPA>af~Ej
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} ;9Hz{ej
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快速排序: `O jvt-5}E
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package org.rut.util.algorithm.support; X[Y#+z4
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import org.rut.util.algorithm.SortUtil; 34]%d<;A
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/** 1(D1}fcul
* @author treeroot q2D`1nT
* @since 2006-2-2 ;?#i]Bh>S
* @version 1.0 6.vNe
*/ r6<ArX$Yl
public class QuickSort implements SortUtil.Sort{ DvU~%%(0^
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/* (non-Javadoc) s>V*=#L
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "%Lmgy:~
*/ ^r%i3
public void sort(int[] data) { u'{sB5_H
quickSort(data,0,data.length-1); *Y^5M"AB_
} WoJ]@Me8
private void quickSort(int[] data,int i,int j){ kv[OW"8t
int pivotIndex=(i+j)/2; Z|f^nH#-C
file://swap &AN%QhI
SortUtil.swap(data,pivotIndex,j); l'P[5'.
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int k=partition(data,i-1,j,data[j]); WJP`0f3
SortUtil.swap(data,k,j); pvI&-D #}
if((k-i)>1) quickSort(data,i,k-1); '$lw[1
if((j-k)>1) quickSort(data,k+1,j); Y&~5k;>'_
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} ((n5';|N
/**
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* @param data $K;_Wf
* @param i xXl$Mp7
* @param j 1Q3%!~<\s
* @return Es_SCWJ
*/ [UUM^!1
private int partition(int[] data, int l, int r,int pivot) { >V3W>5 X
do{ 6eVe}V4W
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r(748Qc4f?
SortUtil.swap(data,l,r); ,2Sv1v$
} O7E;W| ]
while(l SortUtil.swap(data,l,r); (%=lq#,
return l; b'i%B9yU:%
} <%T%NjNPQ
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} :6qUSE
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改进后的快速排序: IiQWs1
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package org.rut.util.algorithm.support; 2-/YYe;C
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import org.rut.util.algorithm.SortUtil; (2&K(1.Y
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/** L|vaTidc0
* @author treeroot Bx_8@+
* @since 2006-2-2 1WZKQeOo
* @version 1.0 mk$Yoz
*/ X*D5y8<
public class ImprovedQuickSort implements SortUtil.Sort { Z.Lx^h+U
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private static int MAX_STACK_SIZE=4096; +X4ttv
private static int THRESHOLD=10; GZ-n!
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/* (non-Javadoc) aa'0EU:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :X]lXock0
*/ -#:Y+"'
public void sort(int[] data) { !^Qb[ev
int[] stack=new int[MAX_STACK_SIZE]; |O #w dnYW
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int top=-1; \ltE rd-
int pivot; L.R\]+$U2
int pivotIndex,l,r;
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stack[++top]=0; =iPd@f"$
stack[++top]=data.length-1; rYP8V
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while(top>0){ ueS[sN!
int j=stack[top--]; cviN$oL
int i=stack[top--]; '{1W)X
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pivotIndex=(i+j)/2; FlM.D u
pivot=data[pivotIndex]; "Hsq<oV8
+;4AG::GN
SortUtil.swap(data,pivotIndex,j); *+zy\AhkP
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file://partition -6*OF.Ag`
l=i-1; 8M5!5Jzv
r=j; U(=f5|-
do{ (&a3v
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \5v=pDd4g
SortUtil.swap(data,l,r); cfQh
} !F}J+N=}
while(l SortUtil.swap(data,l,r); \3@2rW"5
SortUtil.swap(data,l,j); Z{|.xg sY
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if((l-i)>THRESHOLD){ [0%Gu5_\
stack[++top]=i; #RZJ1uL
stack[++top]=l-1; aL$c).hq0
} UC<[z#]\;
if((j-l)>THRESHOLD){ [M zc^I&
stack[++top]=l+1; vX!dMJa0
stack[++top]=j; 1Tts3O.
} U_=wL
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} GurE7J^=
file://new InsertSort().sort(data); [{fF)D<tC
insertSort(data); WhVmycdv
} a)yNXn8E_
/** IU;pkgBj0Y
* @param data vYTPZ@RL
*/ t=@Jw
private void insertSort(int[] data) { J.+?*hcw
int temp; |4 d{X@`&
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ozh^Q$>u
} |rms[1<_
} #uDBF
} uk>/Il
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} l%)=s~6z
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归并排序: %<#$:Qb.
sD8xH
package org.rut.util.algorithm.support; sou$qKoG01
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import org.rut.util.algorithm.SortUtil; \Lh<E5@]
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/** C`K9WJOD
* @author treeroot qjRiTIp9q
* @since 2006-2-2 :4L5@>b-
* @version 1.0 ztxQv5=:,
*/ FlA$ G3
public class MergeSort implements SortUtil.Sort{ ![MDmt5Ub^
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/* (non-Javadoc) N#6A>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H)}1xQ{3F
*/ _bV=G#qKK
public void sort(int[] data) { H?r;S 5)c
int[] temp=new int[data.length]; *#{.\R-D
mergeSort(data,temp,0,data.length-1); "1j\ZCXK_Z
} )9sr,3w
*R~(:z>>
private void mergeSort(int[] data,int[] temp,int l,int r){ K+TTYQ
int mid=(l+r)/2; 1Mhc1MU
if(l==r) return ; &Bdt+OQ ;
mergeSort(data,temp,l,mid); U8I~co:h
mergeSort(data,temp,mid+1,r); aPP<W|Cmo2
for(int i=l;i<=r;i++){ 2g07wJ6x
temp=data; laRKt"A
} (NWN&
int i1=l; e4_aKuA
int i2=mid+1; W3-Rs&se
for(int cur=l;cur<=r;cur++){ &oEq&
if(i1==mid+1) i:Ct6[
data[cur]=temp[i2++]; B7jlJqV
else if(i2>r) $Q7E#
data[cur]=temp[i1++]; E*b[.vUp
else if(temp[i1] data[cur]=temp[i1++]; D;8V{Hs
else _ JJ0pc9t
data[cur]=temp[i2++]; fkUH]CdaB
} Q Fqv,B\<
} YQ`#C#Wb
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} h.+&=s!Nsy
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改进后的归并排序: T_B.p*\BM
vi.AzO
package org.rut.util.algorithm.support; D]`B;aE>A*
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import org.rut.util.algorithm.SortUtil; *B~:L"N
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/** g~sNY|%
* @author treeroot ImY*cW=M
* @since 2006-2-2 TF3q?0
* @version 1.0 }8]uZ)[p=
*/ .A[.?7g
public class ImprovedMergeSort implements SortUtil.Sort { JfINAaboi
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private static final int THRESHOLD = 10; >-o:>
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/* %v)'`|i
* (non-Javadoc) M&T/vByTn_
* d/zX%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uR@Wv^
*/ Zdg{{|mm
public void sort(int[] data) { :
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int[] temp=new int[data.length]; A;nmua-Fv
mergeSort(data,temp,0,data.length-1); =5_F9nk-
} P FFw$\j
BRLU&@G`1
private void mergeSort(int[] data, int[] temp, int l, int r) { [hj'Yg 8{
int i, j, k; !Jp.3,\?~
int mid = (l + r) / 2; d_qVk4h\
if (l == r) aC]l({-0
return; `i^1U O
if ((mid - l) >= THRESHOLD) Q+M3Pqy
mergeSort(data, temp, l, mid); M!DoR6
else Y9ce"*b
insertSort(data, l, mid - l + 1); s;f u
if ((r - mid) > THRESHOLD) %,q#f#
mergeSort(data, temp, mid + 1, r); ;-Dd\\)p
else E4ee_`p
insertSort(data, mid + 1, r - mid); C:EoUu
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for (i = l; i <= mid; i++) { Vta;ibdeqW
temp = data; `7n,(
} ({b/J0<@D
for (j = 1; j <= r - mid; j++) { =gyK*F(RK
temp[r - j + 1] = data[j + mid]; Wf w9cxGkf
} Rp9iX~A`e
int a = temp[l]; Bq8<FZr#!
int b = temp[r]; <W^~Y31:0
for (i = l, j = r, k = l; k <= r; k++) { 2`eu3vA
if (a < b) { EwZt/r
data[k] = temp[i++]; Kg67cmj)f
a = temp; IT33E%G
} else { NU*6iLIq|F
data[k] = temp[j--]; ]g!<5w
b = temp[j]; V1qHl5"
} <v^.FxId
} -e\kIK
%
} ~WLsqP5Y~a
U]3JCZ{]0E
/** Bv*h?`Q
* @param data []^>QsS(X
* @param l B
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* @param i 4D$E
*/ ']Y:gmM"
private void insertSort(int[] data, int start, int len) { UG$i5PV%i
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xGPv3TLH^
} Wd<}|?R
} 9V!K._Cb
} T^SOq:m&
} gE(03SX
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堆排序: %LmB`DqZ
AkC\CdmA
package org.rut.util.algorithm.support; pDfF'jt9
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import org.rut.util.algorithm.SortUtil; =T6\kz9)`
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/** c+VUk*c3
* @author treeroot qQryv_QP
* @since 2006-2-2 Jy$-)
* @version 1.0 b5C #xxIO
*/ ibL;99 #
public class HeapSort implements SortUtil.Sort{ T]k@g_
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/* (non-Javadoc) lPP7w`[PA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ok\UIi~
*/ GM~jR-FZ
public void sort(int[] data) { ::w%rv
MaxHeap h=new MaxHeap(); kY&j~R[C
h.init(data); wDzS<mm
for(int i=0;i h.remove(); E2cmT$6
System.arraycopy(h.queue,1,data,0,data.length); I.x>mN-0
} %/p5C
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.
private static class MaxHeap{ yR-.OF,c
I(|{/{P,
void init(int[] data){ (>'d`^kjk
this.queue=new int[data.length+1];
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for(int i=0;i queue[++size]=data; .v'8G)6g
fixUp(size); PeZ=ONY5
} >EG;2]M&
} $TiAJ}:
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private int size=0; gUlZcb
E.brQx#}
private int[] queue; Z~<V>b
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public int get() { r\?*?sL
return queue[1]; EhoR.
} + `xp+Q
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public void remove() { Zf! 7pM
SortUtil.swap(queue,1,size--); H>?@nYP
fixDown(1); 5sRNqTIr
} ;+\;^nS3d
file://fixdown /V~(!S>
private void fixDown(int k) { Fej$`2mRH
int j; z
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while ((j = k << 1) <= size) { 9i@*\Ada
if (j < size %26amp;%26amp; queue[j] j++; |tkmO:
if (queue[k]>queue[j]) file://不用交换 ,;g:qe3D$
break; a?dM8zAnc
SortUtil.swap(queue,j,k); TM9>r :j'
k = j; G1BVI:A&S
} dBkB9nz
} Z2r\aZ-d`
private void fixUp(int k) { `1d r$U
while (k > 1) { gKnAw+u\
int j = k >> 1; l"64w>,
if (queue[j]>queue[k]) #i?TCO
break; p O.8>C%
SortUtil.swap(queue,j,k); ;6Z?O_zp4
k = j; !&kOqc5:t<
} >ObpOFb%
} S<44{
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} vv3?ewr
y
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} 6_7d1.wv9
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SortUtil: /V^S)5r
*)Y;`Yg$
package org.rut.util.algorithm; }[|"db
BdSTB"
import org.rut.util.algorithm.support.BubbleSort; p<