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。 XhEZTg;
插入排序: Gak@Z!|
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package org.rut.util.algorithm.support; O2x bHn4
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import org.rut.util.algorithm.SortUtil; uoJ@Jt'j
/** [B~*88T
* @author treeroot de7
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* @since 2006-2-2 &/dYJv$[9
* @version 1.0 mok94XuK)
*/ m\zCHX#n
public class InsertSort implements SortUtil.Sort{ X1 DE
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/* (non-Javadoc) YV%y
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~mBY_[_s=
*/ g[G+s4Nv
public void sort(int[] data) { e= { ?d6
int temp; BD.&K_AW
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i~Q nw-^B
} UHyGW$B
} /{6&99SJcc
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冒泡排序: /]U),LbN
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package org.rut.util.algorithm.support; 3~q#P
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import org.rut.util.algorithm.SortUtil; osM[Xv
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/** ,FIG5-e,}
* @author treeroot xAwP
* @since 2006-2-2 af@R\"N9c
* @version 1.0 ZR]p7{8B
*/ -HwqR Ys
public class BubbleSort implements SortUtil.Sort{ y^0
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/* (non-Javadoc) xig4H7V
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6;C2^J @
*/ N)X3pWC8
public void sort(int[] data) { [n]C
int temp; Six2{b)p
for(int i=0;i for(int j=data.length-1;j>i;j--){ g3|k-
if(data[j] SortUtil.swap(data,j,j-1); 8Y"R@'~
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} Xr."C(`w
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选择排序: KzZfpdI92
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package org.rut.util.algorithm.support; /'4]"%i%3
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import org.rut.util.algorithm.SortUtil; {K N7Y"AI
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/** ffW-R)U|3
* @author treeroot l&|Tb8_'
* @since 2006-2-2 bg\9Lbjr
* @version 1.0 lb{X 6_.
*/ !c"EgP+
public class SelectionSort implements SortUtil.Sort { uS<og P
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/* y@h
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* (non-Javadoc) lT?Vt`==~M
* XE'3p6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Vz=:.D
*/ 3qQ}U}-; |
public void sort(int[] data) { g#Z7ReMw
int temp; =qvn?I^/
for (int i = 0; i < data.length; i++) { 4`Cgz#v
{
int lowIndex = i; zr ~4@JTS
for (int j = data.length - 1; j > i; j--) { '/s/o]'sUd
if (data[j] < data[lowIndex]) { 5d;(D i5z
lowIndex = j; L)i6UAo
} 9=J 3T66U
} rR4?*90vjj
SortUtil.swap(data,i,lowIndex); ?7#{#sj
} a|5<L
} O]XgA0]
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} ^V~^[Yp
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Shell排序: d};[^q6X
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package org.rut.util.algorithm.support; )gx*;z@
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import org.rut.util.algorithm.SortUtil; Z,-J
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/** x*!*2{
* @author treeroot Y
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* @since 2006-2-2 ]DUmp6
* @version 1.0 &lo<sbd.
*/ HHerL%/
public class ShellSort implements SortUtil.Sort{ g) ofAG2
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/* (non-Javadoc) \j<aFOT(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) : sG/
*/ ujn7DBE"
public void sort(int[] data) { 6P
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for(int i=data.length/2;i>2;i/=2){ Xyu0np;@
for(int j=0;j insertSort(data,j,i); y: ]
} [s[!PlazX
} B1j^qoC.5
insertSort(data,0,1); cm8co
} l*Q OM
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/** 9.:&u/e
* @param data B~E>=85z
* @param j v8 II=9
* @param i </B:Zjn
*/ Uw?25+[b
private void insertSort(int[] data, int start, int inc) { yO/'}FD
int temp; &p+2Vz{
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); *'BI=*`
} 4QE")Ge
} O))j
} xouBBb=
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} t R.>d
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快速排序: L*P*^I^1
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package org.rut.util.algorithm.support; NA YwuE-`
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import org.rut.util.algorithm.SortUtil; _ t.E_K
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/** Bw<$fT`
* @author treeroot S^N{=*
* @since 2006-2-2 /GO((v+J
* @version 1.0 ~(L&*/c
*/ =y^g*9}_
public class QuickSort implements SortUtil.Sort{ s]HJcgI
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/* (non-Javadoc) m;sYg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U ZL-mF:)&
*/ " ;o,D
public void sort(int[] data) { @7sHFwtar?
quickSort(data,0,data.length-1); PWV+M@
} iA4VT,
private void quickSort(int[] data,int i,int j){ 3W[Ps?G
int pivotIndex=(i+j)/2; 8SBa w'a
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SortUtil.swap(data,pivotIndex,j); %+dRjG~TB
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int k=partition(data,i-1,j,data[j]); "Z"`X3,-z
SortUtil.swap(data,k,j); "2}n(8
if((k-i)>1) quickSort(data,i,k-1); AY]rQ:I
if((j-k)>1) quickSort(data,k+1,j); )LL.fPic
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} (9)uZ-BF,
/** [C3wjYi
* @param data D7v.Xq|
* @param i }cIj1:
* @param j t?p>L*
* @return $wcV~'fM
*/ 9Z:pss@
private int partition(int[] data, int l, int r,int pivot) { -}5dZ;
do{ 0
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); OSK:Cb.-?F
SortUtil.swap(data,l,r); i;J*9B_U
} @ 3b-
while(l SortUtil.swap(data,l,r); cMfnc.P\K
return l; bR=TGL&
} `)H|
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} !/"y
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改进后的快速排序: S3dcE"hg
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package org.rut.util.algorithm.support; 3UcOpq2i\
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import org.rut.util.algorithm.SortUtil; YY$O"!."
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/** yiczRex%rq
* @author treeroot Zk #C!]=
* @since 2006-2-2 ]r1Lr{7^S
* @version 1.0 Y2>*' nU
*/ k")3R}mX
public class ImprovedQuickSort implements SortUtil.Sort { )1&,khd/u
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private static int MAX_STACK_SIZE=4096; z\<gm$1CB
private static int THRESHOLD=10; $t>ow~Xi
/* (non-Javadoc) k= 9a/M
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,oj)`?Vh
*/ =1j`VJU9
public void sort(int[] data) { e pAC%a
int[] stack=new int[MAX_STACK_SIZE]; -vS7 %Fbr
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int top=-1; lW@i,1
int pivot; HTP~5J
int pivotIndex,l,r; vFGVz
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stack[++top]=0; =!2(7Nr
stack[++top]=data.length-1; q%FXox~b
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while(top>0){ ld'Aaxl&
int j=stack[top--]; c6HH%|
int i=stack[top--]; ;7yt,b5&C
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pivotIndex=(i+j)/2; Q#I?nBin
pivot=data[pivotIndex]; Y.o-e)zX
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SortUtil.swap(data,pivotIndex,j); u=B,i#>s
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file://partition .w~zW*M0
l=i-1; _+nlm5
r=j; o
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do{ 8z
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while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); T#e ;$\
SortUtil.swap(data,l,r); 0?
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} nB1[OB{
while(l SortUtil.swap(data,l,r); [q{[Avqf
SortUtil.swap(data,l,j); S(
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if((l-i)>THRESHOLD){ mxJ& IV
stack[++top]=i; qE&R.I!o
stack[++top]=l-1; |[}!E/7>b
} yk|<P\
if((j-l)>THRESHOLD){ fSFb)+
stack[++top]=l+1; <wZ2S3RNA
stack[++top]=j; N3J;_=<4
} |B;tv#mKD
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} ]V K%6PQ0
file://new InsertSort().sort(data); usR:-1{
insertSort(data); e1j3X\ \
} u
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/** (}u2) 9
* @param data ]l
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*/ vC9Qe
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private void insertSort(int[] data) { $ RDwy)9
int temp; s8/y|HN^
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;NHZD
} !w8t`Z['
} T!*lTzNHm
} 6RLYpQ$+
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} ?(4E le
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归并排序: xQ=sZv^M
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package org.rut.util.algorithm.support; B~RVFc +
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import org.rut.util.algorithm.SortUtil; :d
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/** y7quKv7L}
* @author treeroot *|T]('xwC
* @since 2006-2-2 V9 dRn2- [
* @version 1.0 M ;\iL?,
*/ qQu}4Ye>
public class MergeSort implements SortUtil.Sort{ 0Y81B;/F
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/* (non-Javadoc) .W#-Cl&n8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oist>A$Z
*/ <B?@,S>
public void sort(int[] data) { -<[MM2Y
int[] temp=new int[data.length]; j<-#a^jb
mergeSort(data,temp,0,data.length-1); mu[:b
} Qt@_C*,P
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private void mergeSort(int[] data,int[] temp,int l,int r){ .I"Qu:``
int mid=(l+r)/2; W'BB FG
if(l==r) return ; bZE;}d
mergeSort(data,temp,l,mid); vjcG
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mergeSort(data,temp,mid+1,r); <GbF4\ue
for(int i=l;i<=r;i++){ S~9K'\vO
temp=data; _qq> 43
} CHeU?NtFps
int i1=l; 0GtL6M@pP
int i2=mid+1; ^}+qd1r
for(int cur=l;cur<=r;cur++){ ZPieL&uV`
if(i1==mid+1) zF9SZ#{a
data[cur]=temp[i2++]; 4'ym vR
else if(i2>r) RpAqnDX)
data[cur]=temp[i1++]; L|wD2iw
else if(temp[i1] data[cur]=temp[i1++]; l$PSID
else sO,%Ok1
data[cur]=temp[i2++]; >VQP,J{
} 3++}4%w
} R aVOZ=^-
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} :ub 4p4h*
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改进后的归并排序: 7*9a`p3w
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package org.rut.util.algorithm.support; KxZO.>,
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import org.rut.util.algorithm.SortUtil; 8
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/** PJq;OM|
* @author treeroot b) k\?'j
* @since 2006-2-2 0h[pw
* @version 1.0 p(jY2&g
*/ /k$h2,O"*
public class ImprovedMergeSort implements SortUtil.Sort { M.|cl#
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private static final int THRESHOLD = 10; |Va*=@&6J
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/* gn2*'_V~3
* (non-Javadoc) $2p=vi3
* otA59 ;Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -YXNB[C
*/ Gb=pQ( n4
public void sort(int[] data) { KT 3W>/#E
int[] temp=new int[data.length]; gRnn}LL^
mergeSort(data,temp,0,data.length-1); *>lh2sslL
} \~sc6ho
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private void mergeSort(int[] data, int[] temp, int l, int r) { {:D8@jb[
int i, j, k; |[)k5nUQ|
int mid = (l + r) / 2; 7#~v<M6
if (l == r) V`/E$a1&
return; UlG8c~p
if ((mid - l) >= THRESHOLD) =cwQG&as
mergeSort(data, temp, l, mid); qO;.{f
else aC\O'KcH
insertSort(data, l, mid - l + 1); y /$Q5P+o
if ((r - mid) > THRESHOLD) 'qL:7
mergeSort(data, temp, mid + 1, r); /$Qs1*
else {|KFgQ'\
insertSort(data, mid + 1, r - mid); V`c"q.8
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for (i = l; i <= mid; i++) { DzfgPY_Py
temp = data; YXJr eM5
} 6x'F0{U
for (j = 1; j <= r - mid; j++) { <Km
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temp[r - j + 1] = data[j + mid]; ~4 ~c+^PF
} TY."?` [FK
int a = temp[l]; mH1T|UI
int b = temp[r]; N\,[(LbA&
for (i = l, j = r, k = l; k <= r; k++) { :3J0Q
if (a < b) { L701j.7"
data[k] = temp[i++]; 50s1o{xwc
a = temp; v qt#JdPp9
} else { 'n:|D7t
data[k] = temp[j--]; Vu0d\l^$
b = temp[j]; zBQV2.@
} J0ysZ]
} 1zGD~[M
} O$qxo
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/** j*.K|77WHj
* @param data O'm5k l
* @param l &z;bX-"E
* @param i [P'"|TM[~
*/ yt'P,m
private void insertSort(int[] data, int start, int len) { @
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Dias!$g
} lm;Dy*|<