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。 '5|Q<5!o
插入排序: Ss"|1]acP
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package org.rut.util.algorithm.support; .b=M5JsyV
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import org.rut.util.algorithm.SortUtil; YQN]x}:E+4
/** l 'AK
* @author treeroot F/Rng'l
* @since 2006-2-2 @-)<|orU4
* @version 1.0 \iFMU#
*/ ?aK'OIo
public class InsertSort implements SortUtil.Sort{ 9@KUqoX
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/* (non-Javadoc) {:};(oz)f
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k| _$R?
*/ sDLVYD
public void sort(int[] data) { Hmz=/.$
int temp; <7_ |Q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1g~Dm}m
} m.\ >95!
} { ()p%#*
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冒泡排序: KKx&UKjV
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package org.rut.util.algorithm.support; 5PPPd-'Z_
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import org.rut.util.algorithm.SortUtil; }};j2
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/** SQO>}#qm
* @author treeroot Bi9
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* @since 2006-2-2 <Um1h:^
* @version 1.0 fP^W"y
*/ C ?GvTc
public class BubbleSort implements SortUtil.Sort{ 2.fyP"P
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A%NK0j$;}
/* (non-Javadoc) 1M%{Uqsd -
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1S*8v 7
*/ w>NZRP_3
public void sort(int[] data) { ?/`C~e<J
int temp; hYP6z^
for(int i=0;i for(int j=data.length-1;j>i;j--){ SeRK7Q&_
if(data[j] SortUtil.swap(data,j,j-1); ,_"7|z wb
} X_-Hrp!h
}
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} xh+AZ3
} "K}W^J9v
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} X7XCZSh#A
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选择排序: %KJ"rvi4K
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package org.rut.util.algorithm.support; N3XVT{yo
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import org.rut.util.algorithm.SortUtil; n}AR/3}
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/** ++J Bbuzj!
* @author treeroot {<-
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* @since 2006-2-2 Ak\D6eHcB
* @version 1.0 <'>d0:>N
*/ 7':5
public class SelectionSort implements SortUtil.Sort { (]zl$*k
k=h/i8i2z
/* 5p]urfN-f
* (non-Javadoc) mC{!8WC@k
* mFgb_Cd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #K<=xP
*/ uZqu xu.
public void sort(int[] data) { z. _C*c
int temp; ?{@!!te@3v
for (int i = 0; i < data.length; i++) { Q8}TNJsU
int lowIndex = i; \jF" nl
for (int j = data.length - 1; j > i; j--) { 1}n)J6m
if (data[j] < data[lowIndex]) { %T&&x2p^=?
lowIndex = j; uJ|5Ve
} WL)_8!
} UZ4tq
SortUtil.swap(data,i,lowIndex); nU?Xc(Xy
} {L-{Y<fke
} wRV`v$*6
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} ;*>QG6Fh
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Shell排序: c"%_]7
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package org.rut.util.algorithm.support; ?j&~vy= T
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import org.rut.util.algorithm.SortUtil; JhMrm%
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/** Sg_-OX@f
* @author treeroot ~$y#(YbH
* @since 2006-2-2 -tK;RQYax
* @version 1.0 $ sA~p_]
*/ AXNszS%4
public class ShellSort implements SortUtil.Sort{ a!^-~pH:
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/* (non-Javadoc) zal3j^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DMK"Q#Vw
*/ Fu1|b2B-x
public void sort(int[] data) { XqE55Jclp
for(int i=data.length/2;i>2;i/=2){ TeGLAt
for(int j=0;j insertSort(data,j,i); 6bRQL}[
} iP#A-du
} i)`zKbK
insertSort(data,0,1); *mK);@pL
} *s<dgFA'
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/** \J3v>&m<7
* @param data 8,H#t@+MT
* @param j ?4wehcZz
* @param i ?Qo_
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*/ =AnZ>6
private void insertSort(int[] data, int start, int inc) { c~0VNuN
int temp; eHnei F
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); YV ZSKU
} Ow($\,
} g1hg`qBBW
} &23ss/
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} (7Ca\H3$
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快速排序: )qe$rD;N
G5XnGl}Q
package org.rut.util.algorithm.support; gKm~cjCB`~
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import org.rut.util.algorithm.SortUtil; [r/Seg"
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/** UQji7K }
* @author treeroot zOu$H[
* @since 2006-2-2 i*cE
* @version 1.0 0| DG\&?
*/ D)/XP
public class QuickSort implements SortUtil.Sort{ !3X%5=#L4
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/* (non-Javadoc) *> &N
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K_lCDiqG
*/ 0R%uVJG
public void sort(int[] data) { t-<[._:+
quickSort(data,0,data.length-1); 2Z IpzH/8
} 8w@W8(3B
private void quickSort(int[] data,int i,int j){ u7y7
int pivotIndex=(i+j)/2; nE"b`
file://swap .}hZ7>4-
SortUtil.swap(data,pivotIndex,j); NM.f0{:cj
^kR^
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int k=partition(data,i-1,j,data[j]); {'wU&!
SortUtil.swap(data,k,j); 1^H<+0
if((k-i)>1) quickSort(data,i,k-1); ^)0{42!]
if((j-k)>1) quickSort(data,k+1,j); {</$ObK
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} `w+9j-
/** 3sg)]3jm2
* @param data _I70qz8
* @param i ?BWvF]p5/
* @param j _^2[(<Gmv
* @return $85o%siS'
*/ 3xCA\*
private int partition(int[] data, int l, int r,int pivot) { M3Z Jt' |
do{ b8b PK<
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); koWb@V]
SortUtil.swap(data,l,r); OAnn`*5Up
} OrH1fhh
while(l SortUtil.swap(data,l,r); PJ11LE
return l; 2DBFXhP
} ? Ge*~d
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} %Pvb>U(Xs
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改进后的快速排序: y88}f&z#5
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package org.rut.util.algorithm.support; Mp@(/
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import org.rut.util.algorithm.SortUtil; y@8399;l
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/** (XIq?c1T
* @author treeroot fvBC9^3
* @since 2006-2-2 zl8\jP
* @version 1.0 I(kIHjV|
*/ )
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public class ImprovedQuickSort implements SortUtil.Sort { q2U"k
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private static int MAX_STACK_SIZE=4096; ?yM/j7Xn
private static int THRESHOLD=10; 2'^OtM,
/* (non-Javadoc) N4]6LA6x6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [N$_@[
*/ jvKaxB;e
public void sort(int[] data) { .j<B5/+
int[] stack=new int[MAX_STACK_SIZE]; ,HO/Q6;N
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int top=-1; ?bYQZJ>&
int pivot; gl\{QcI8<
int pivotIndex,l,r; d=OO(sf
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stack[++top]=0; e=Tc(Mwn
stack[++top]=data.length-1; Qc<O; #
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while(top>0){ iU+,Jeu
int j=stack[top--]; -Aym+N9
int i=stack[top--]; 8JO\%DFJ
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pivotIndex=(i+j)/2; sL`D}_:
pivot=data[pivotIndex]; 6o23#JgN
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SortUtil.swap(data,pivotIndex,j); wU3ica&[
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file://partition tZBE& :l
l=i-1; UHl/AM>!
r=j; t:@A)ip
do{ >33b@)
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <^c0bY1
SortUtil.swap(data,l,r); nk,Mo5iqV
} T`<k4ur
while(l SortUtil.swap(data,l,r); O*Pe[T5x'
SortUtil.swap(data,l,j); "&o@%){]
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if((l-i)>THRESHOLD){ _q4dgi z
stack[++top]=i; CbaAnm1
stack[++top]=l-1; gY^TBR0?m
} (S 3kP5:F
if((j-l)>THRESHOLD){ \yizIo.Y`
stack[++top]=l+1; MZMv.OeYt,
stack[++top]=j; @ y2Bq['
} >oYwzK0&
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} \J
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file://new InsertSort().sort(data); L#MxB|fcr
insertSort(data); Pw{{+PBu R
} @%85k/(
/** Y$5v3E\uc
* @param data YZu#0)
*/ #Z5Wk
private void insertSort(int[] data) { 3>3ZfFC
int temp; m`0{j1K
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EGO@`<"h
} tD482Sb=
} *jSc&{s~
} s/|'1E\F
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} s"!}=kX
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归并排序: 4tu>~ vOE
fBh|:2u
package org.rut.util.algorithm.support; F9%VyQf
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import org.rut.util.algorithm.SortUtil; F?Nk:#
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/** 2*E<G|-F
* @author treeroot HpSfI7
* @since 2006-2-2 lFt{:HfX-
* @version 1.0 .tZ$a_O
*/ e%7P$.
public class MergeSort implements SortUtil.Sort{ [<Puh
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/* (non-Javadoc) hpKc_|un
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *3oQS"8
*/ oQB1fs
public void sort(int[] data) { !H.lVA
int[] temp=new int[data.length]; ttt&sW`
mergeSort(data,temp,0,data.length-1); +/8?+1E ^
} 9:5NX3"p
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private void mergeSort(int[] data,int[] temp,int l,int r){ 3+PM_c)Y
int mid=(l+r)/2; OtqLigt&l
if(l==r) return ; !-Q!/?
mergeSort(data,temp,l,mid); {D.0_=y~2
mergeSort(data,temp,mid+1,r); ;8kfgpM_
for(int i=l;i<=r;i++){ @}RyW&1Z
temp=data; o: DnZN
} #?|z&9
int i1=l; 'v)+S;oB
int i2=mid+1; 0kEq|k9
for(int cur=l;cur<=r;cur++){ skArocs
if(i1==mid+1) RtEkd_2
data[cur]=temp[i2++]; .v8=zi:7Y
else if(i2>r) ee\zU~
data[cur]=temp[i1++]; \wd`6
else if(temp[i1] data[cur]=temp[i1++]; f
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else j0M;2 3@[
data[cur]=temp[i2++]; </Lqk3S-!
} hZG{"O!2s
} ?7s
M"
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} n-WvIy
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改进后的归并排序: l/M+JT~R
_CT|5wQF<
package org.rut.util.algorithm.support; qA[}\8}h
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import org.rut.util.algorithm.SortUtil;
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/** pp _ddk
* @author treeroot l)bUHh5[
* @since 2006-2-2 >H! 2Wflm
* @version 1.0 bsVOO9.4-
*/ L2tmo-]nw
public class ImprovedMergeSort implements SortUtil.Sort { % QkvBg*
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private static final int THRESHOLD = 10; b6VAyTa
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/* 3g?T,|2K
* (non-Javadoc) 8ttw!x69)_
* Ric$Xmu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VW/1[?HG5
*/ 9`b3=&i\
public void sort(int[] data) { v]sGdZ(6-
int[] temp=new int[data.length]; 3M`J.>
mergeSort(data,temp,0,data.length-1); T[J_/DE@
} yK;I<8+>_
CQ ?|=cN
private void mergeSort(int[] data, int[] temp, int l, int r) { eIl&=gZ6>
int i, j, k; BC+qeocg
int mid = (l + r) / 2; ~A( Pa-
if (l == r) tL|Q{+i
yE
return; W[DB!ue
if ((mid - l) >= THRESHOLD) [ j_jee
mergeSort(data, temp, l, mid); YN3uhd[2
else v4zARE9#
insertSort(data, l, mid - l + 1); wVB8PO8
if ((r - mid) > THRESHOLD) b87d'# .
mergeSort(data, temp, mid + 1, r); re2%e-F"
else a!.8^:B&
insertSort(data, mid + 1, r - mid); F.9|$g*ip
kM@,^`&
for (i = l; i <= mid; i++) { P n DZi
temp = data; P*Nl3?T
} HC$cK+,ZU}
for (j = 1; j <= r - mid; j++) { C2T,1 =
temp[r - j + 1] = data[j + mid]; )c_ll;%
} _\zfXHp
int a = temp[l]; J KGZ0yn
int b = temp[r]; 9:>vl0
for (i = l, j = r, k = l; k <= r; k++) { yo=d"*E4^
if (a < b) { yDrJn*
r^
data[k] = temp[i++]; 2
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a = temp; 3]Mx,u
} else { zjS<e
XLs[
data[k] = temp[j--]; EWi@1PAZK
b = temp[j]; :yeTzIz]
} ?T&D@Ohsx
} shRvwE[
} r}w 9?s^rB
Kk#@8h>
/** wO9<An
* @param data Z'~FZRF
* @param l t<=L&:<N
* @param i I&9B^fF6
*/ 1zffPC8jl
private void insertSort(int[] data, int start, int len) { sQ$FtKm6
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :1I,:L
} PC5FfX
} 6>Fw,$
} 6 9Cxh
} P#C`/%$S
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堆排序: q]aRJ`9f
[S%
package org.rut.util.algorithm.support; gkjZX
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import org.rut.util.algorithm.SortUtil; S_atEmQ
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/** uo^>95lkv
* @author treeroot )_ y{^kn3^
* @since 2006-2-2 @QofsWC
* @version 1.0 Q]HRg4r
*/ ?bEYvHAzg
public class HeapSort implements SortUtil.Sort{ L r,$98Dy
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/* (non-Javadoc) A@4Cfb@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l d@^$
*/ 5y)kQ<x"
public void sort(int[] data) { Z'~5L_.]Ai
MaxHeap h=new MaxHeap(); &*}S 0
h.init(data); pfG:PrZ
for(int i=0;i h.remove(); YY9q'x,w
System.arraycopy(h.queue,1,data,0,data.length); (.cT<(TB
} d0,I] "
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private static class MaxHeap{ S70ERRk
B sAglem
void init(int[] data){ %2{E'^#)p-
this.queue=new int[data.length+1]; LLMkv!%D
for(int i=0;i queue[++size]=data; Y+N87C<
fixUp(size); sr\MQ?\fB
} DmYm~hzJ
} `i}\k
W$&Q.Z
private int size=0; 6 B
)
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private int[] queue; fAK
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public int get() { }5gQZ'ys'
return queue[1]; )\e_I\-
} $]vR ,E
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public void remove() { `U1"WcN
SortUtil.swap(queue,1,size--); 3ySnA AG
fixDown(1); 3+Q6<MS
q
} IRQ(/:]
file://fixdown X!@Gv:TD
private void fixDown(int k) { `>V.}K^4
int j; ZE9*i}r
while ((j = k << 1) <= size) { /swTn1<Y
if (j < size %26amp;%26amp; queue[j] j++; P
_ SJK
if (queue[k]>queue[j]) file://不用交换 _tjH=Ff$
break; %w@(V([(c
SortUtil.swap(queue,j,k); 1>Op)T>{c
k = j; =\3*;59\
} i|<*EXB"
} 4bO7rhve
private void fixUp(int k) { ?;$g, 2n
while (k > 1) { XDn$=`2
int j = k >> 1; YpWu\oP
if (queue[j]>queue[k]) 6O"0?wG+
break; &^}w|J?
SortUtil.swap(queue,j,k); '?d[ ip
k = j; E?;W@MJi
} m'S-h'a
} BH}u\K
3RD Q{&J:
} .RT5sj\d
{>i'Pb0mG|
} v4&*iT
71~V*
SortUtil: wxoBq{r;
DCNuvrZ
package org.rut.util.algorithm; U{ Y)\hR-
A_2ppEG
import org.rut.util.algorithm.support.BubbleSort; i,~{{XS<
import org.rut.util.algorithm.support.HeapSort; (<f[$ |%
import org.rut.util.algorithm.support.ImprovedMergeSort; +"C0de |-
import org.rut.util.algorithm.support.ImprovedQuickSort; t+&WsCN
import org.rut.util.algorithm.support.InsertSort; !:>y.^O
import org.rut.util.algorithm.support.MergeSort; 6 2LZ}yn_"
import org.rut.util.algorithm.support.QuickSort; Jlzhn#5c-
import org.rut.util.algorithm.support.SelectionSort; }/=VnCfU
import org.rut.util.algorithm.support.ShellSort; NZl0sX.:
q3;HfZ
/** V7&