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。 J+.t\R
插入排序: '}!dRpx
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package org.rut.util.algorithm.support; 8|J%IE
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import org.rut.util.algorithm.SortUtil; iqOd]H]v
/** wHIS}OONz
* @author treeroot DORFK
* @since 2006-2-2 }*BY!5
* @version 1.0 <m )@~s?D
*/ cFH,fj
public class InsertSort implements SortUtil.Sort{ Uel*:c
~Q6ufTGhpM
/* (non-Javadoc) .@[+05Yw
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fx_7B (
*/ xvrCm`3n@
public void sort(int[] data) { !{ )H
int temp; sS+9ly{9J
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X1" `0r3
} v,2{Vr
} NB,iC
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} *_^AK=i
4!E6|N%f
} .m+KXlP
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9]J
冒泡排序: P/ug'
mD0pqK
package org.rut.util.algorithm.support; |yqx
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import org.rut.util.algorithm.SortUtil; ~j8x"
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/** 2^Y1S?g.
* @author treeroot Ai/ay# E
* @since 2006-2-2 RL>[t
* @version 1.0 M%6{A+(
*/ u2BVQ<SA
public class BubbleSort implements SortUtil.Sort{ B8C"i%8V)
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/* (non-Javadoc) +]I7)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y&+<'FA
*/ C' ny 2>uA
public void sort(int[] data) { `Y$LXF~,Om
int temp; o/9 V1"
for(int i=0;i for(int j=data.length-1;j>i;j--){ -6 DfM,
if(data[j] SortUtil.swap(data,j,j-1); )vo PH)!
} L$Ss]Ar=
}
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} f?
ko%c_p
} \|wVIi
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} &@{Ba~S
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选择排序: ~KrzJp=5F
6rPe\'n=B
package org.rut.util.algorithm.support; /FB '
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import org.rut.util.algorithm.SortUtil; /G</ [ N5
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/** |\elM[G"g
* @author treeroot .dl1sv
U
* @since 2006-2-2 9jJ&QACn
* @version 1.0 x?f3XEA_
*/ R$cg\DD
public class SelectionSort implements SortUtil.Sort { {n|Ra[9_
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/* gLu#M:4N
* (non-Javadoc) g.&&=T
* |J~;yO SD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >#xpg&2x
*/ iPI6 _h
public void sort(int[] data) { > \KBXS}
int temp; syV&Ds)
for (int i = 0; i < data.length; i++) { V,&s$eQC
int lowIndex = i; C>t1~^Q},9
for (int j = data.length - 1; j > i; j--) { nh,N(t9
if (data[j] < data[lowIndex]) { QT?fp
>'
lowIndex = j; ZJI|762,
} V.:imj
} |'1[\<MM3
SortUtil.swap(data,i,lowIndex); whxE[Xnv
} :?yv0Iu
} Vb0hlJb
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} |>VDMezy
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Shell排序: HJoPk'p%
aBol9`6
package org.rut.util.algorithm.support; :DQHb"(
IO|">a6
import org.rut.util.algorithm.SortUtil; a?&oOQd-iP
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/** 3'*SSZmnOB
* @author treeroot G#n27y nh
* @since 2006-2-2 wnhac}
* @version 1.0 Exk[;lI
*/ jjEkz 5
public class ShellSort implements SortUtil.Sort{ \jZvP`.2
^!N _Nx/M
/* (non-Javadoc) 6z!?U:bT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Zwp*JH+G
*/ V$<og
public void sort(int[] data) { C$
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for(int i=data.length/2;i>2;i/=2){ F8>Fp"
for(int j=0;j insertSort(data,j,i); c,4UnEoCR
} MS><7lk-
} ysDfp'C,
insertSort(data,0,1); |cUlXg=
} I.1zD aP
vlOMB
/** (&+
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* @param data gmy_ZVU'
* @param j IP/
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* @param i )\'U$
*/ [ gx<7}[
private void insertSort(int[] data, int start, int inc) { >*{\N^:z
int temp; fg+Q7'*Vq
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Z!7#"wO9+V
} 8H3|^J
} :Uj+iYE8Z8
} W UDQb5k
cYmMO[4YG'
} l+y/ Mq^QB
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快速排序: IHMZE42
Z/6B[,V
package org.rut.util.algorithm.support; )r5QOa/
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import org.rut.util.algorithm.SortUtil; _U%!&_m6
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/** M*}C.E!
* @author treeroot pZ%/;sxYa
* @since 2006-2-2 95[yGO>ZYz
* @version 1.0 ~'=s?\I
*/ ko$bCG%
public class QuickSort implements SortUtil.Sort{ HE7JQP!q
! E#XmYhX=
/* (non-Javadoc) <eI7xifD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f-tjMa /_
*/ %'%r.
public void sort(int[] data) { h 5t,5e}
quickSort(data,0,data.length-1); `lqMifD
} <s)+V6\E
private void quickSort(int[] data,int i,int j){ FsTE.PT
int pivotIndex=(i+j)/2; qun#z$
file://swap $xa#+
SortUtil.swap(data,pivotIndex,j); j'#W)dp(
9)3ok#pQ/
int k=partition(data,i-1,j,data[j]); ;WO/xA-#
SortUtil.swap(data,k,j); )CYSU(YTD
if((k-i)>1) quickSort(data,i,k-1); W9t%:wF
if((j-k)>1) quickSort(data,k+1,j); Dwe_ytjpc
Ng0V&oDI
} o[!]xmj
/** +_3>T''_
* @param data ePP-&V"`"
* @param i Xu3o,k
* @param j E<>n0",
* @return (Lo<3a-]
*/ Jou~>0,/j
private int partition(int[] data, int l, int r,int pivot) { m .le' &
do{ 6Z\[{S];
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L'`W5B@
SortUtil.swap(data,l,r); ^mm:u<Yt
} oJvF)d@gU
while(l SortUtil.swap(data,l,r); =Bu d!
return l; .3Jggp
} wk<QYLEk
dNB56E)5`J
} JGHQ_AI
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改进后的快速排序: #K yb9Qg
Vdjf
F&q
package org.rut.util.algorithm.support; ac p-4g+j
%1 9TJn%J$
import org.rut.util.algorithm.SortUtil; O|O#T.Tg
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/** [mYmrLs6
* @author treeroot W+ Z]
Y
* @since 2006-2-2 .fk!~8b[Q+
* @version 1.0 Ha)eeE$
*/ bu1O<*
public class ImprovedQuickSort implements SortUtil.Sort { MR:Co4(
{()8 Wr
private static int MAX_STACK_SIZE=4096; lGwX.cA!'
private static int THRESHOLD=10; LBk1Qw}-
/* (non-Javadoc) 6-{QU] #
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #f5-f
*/ -e3m!h
public void sort(int[] data) { >}\!'3)_
int[] stack=new int[MAX_STACK_SIZE]; 5Y"JRWC
hp/}Z"A=
int top=-1; !ANv XPp
int pivot; X8~cWW
int pivotIndex,l,r; dBE
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^PMP2\JQA
stack[++top]=0; 22a$//}E
stack[++top]=data.length-1; O{y2tz3
~3dBt@%0
while(top>0){ |
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int j=stack[top--]; MS%xOB*6
int i=stack[top--]; Q|rrbx b
^sY ]N77
pivotIndex=(i+j)/2; Q7gBxp
pivot=data[pivotIndex]; fT!n*;h
FZ
DC?
SortUtil.swap(data,pivotIndex,j); nzmv>s&UW
w&8gA[y*u
file://partition {n2mh%I
l=i-1; ~M6Q8Y9
r=j; ~Y<x-)R
do{ {e/Qs|a
R
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); '-p<E"#4Z
SortUtil.swap(data,l,r); ]O3[Te
} yk5-@qo
while(l SortUtil.swap(data,l,r); 4nzUDeI3MG
SortUtil.swap(data,l,j); s(q\!\FS
V/j+Z1ZW
if((l-i)>THRESHOLD){ 7z9gsi
stack[++top]=i; k%?wNk>
stack[++top]=l-1; }Y~o =3-
} ]i3 2-8%
if((j-l)>THRESHOLD){ ^n"ve2
stack[++top]=l+1; ~T7\lJ{%G
stack[++top]=j; -)(HG)3
} rLGh>bw#`3
}A'QXtI/G
} qd6XKl\5
file://new InsertSort().sort(data); xV @X%E
insertSort(data); 3de<H=H'
} tRZCOEo4
/** 5K|1Y#X
* @param data H.qp~-n
*/ |Tuk9d4]
private void insertSort(int[] data) { J'`,];su
int temp; R@-rc|FunJ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \74+ cN
} pPem;i^~
} lPFT)>(+@
} pi[:"}m]/P
.e%PK[o
} 8*V^DM3n-
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归并排序: ,d'x]&a
DfgqB3U[
package org.rut.util.algorithm.support; $q.%4
q|0Lu
import org.rut.util.algorithm.SortUtil; +K,]#$k
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/** ?NoG.
* @author treeroot Ytop=ZIl'
* @since 2006-2-2 @U08v_,
* @version 1.0 Dp4\rps
*/ DyIuM{Owj
public class MergeSort implements SortUtil.Sort{ ?a+>%uWt
UM%]A'h2O"
/* (non-Javadoc) l?LwQmq6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o Y{L0B[
*/ *}DCxv
public void sort(int[] data) { &[ejxK"
int[] temp=new int[data.length]; 2'UWPZgE
mergeSort(data,temp,0,data.length-1); Rqu_[M
} g0NtM%
s ki'I
private void mergeSort(int[] data,int[] temp,int l,int r){ J@ZIW%5
int mid=(l+r)/2; 60(j[d-$p
if(l==r) return ; 6O uB}*
mergeSort(data,temp,l,mid); E-\Wo3
mergeSort(data,temp,mid+1,r); E9JxntX
for(int i=l;i<=r;i++){ _0p8FhNt
temp=data; RGvfy/T
} [Zc8tE2oN
int i1=l; /@-!JF#g
int i2=mid+1; Ey7SQb
for(int cur=l;cur<=r;cur++){ w'E&w)Z]
if(i1==mid+1) S) ZcH
data[cur]=temp[i2++]; h3U| ~h
else if(i2>r) Ry9kGdqO
data[cur]=temp[i1++]; CmKbpN*
else if(temp[i1] data[cur]=temp[i1++]; |X@ZM
else LPO:Ka
data[cur]=temp[i2++]; =0!PnBGYn
} f*U3s N^y
} %>u(UmFO
o|FjNL
} Hy}oSy26
30 e>C
改进后的归并排序: AlF"1X02
Q |,(C0<G
package org.rut.util.algorithm.support; =wbgZr^2
\2F{r<A\@
import org.rut.util.algorithm.SortUtil; NbnahhS
LCKCg[D
/** 1$nlRQi
* @author treeroot 4+Aht]$hC
* @since 2006-2-2 }EM vEA
* @version 1.0 Q{FK_Mv<
*/ :98<dQIG
public class ImprovedMergeSort implements SortUtil.Sort { W
!TnS/O_1
9n\:grW
private static final int THRESHOLD = 10; =Ts2a"n
8[@aX;I
/* t+7|/GLs2
* (non-Javadoc) IL*Ghq{/
* .=@xTJh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |hHj7X<?k
*/ !7)` g i
public void sort(int[] data) { !C ]5_
int[] temp=new int[data.length]; x -CTMKX
mergeSort(data,temp,0,data.length-1); fL-lx-~
} vKrOIBP
Ed">$S
private void mergeSort(int[] data, int[] temp, int l, int r) { FO[x
c;
int i, j, k; ]k0Pe;<
int mid = (l + r) / 2; .tRp
if (l == r) vlW521
return; F_C7S
if ((mid - l) >= THRESHOLD) \m Gx-g6
mergeSort(data, temp, l, mid); N>a. dYXr
else wg-qq4Q\
insertSort(data, l, mid - l + 1); lQ5d.}O&
if ((r - mid) > THRESHOLD) barY13)$U
mergeSort(data, temp, mid + 1, r); 04o>POR
else 'c]Fhe fb
insertSort(data, mid + 1, r - mid); 5B:%##Ug5
7dxe03h
for (i = l; i <= mid; i++) { 7\;4 d4u
temp = data; /2s=;tA1
} ([g[\c,H
for (j = 1; j <= r - mid; j++) { A[7\!bq5
temp[r - j + 1] = data[j + mid]; 9K4]~_%h\
} ^$>Q6.x?*)
int a = temp[l]; #3~ #`&
int b = temp[r]; :}B=Bk/q
for (i = l, j = r, k = l; k <= r; k++) { u)X]]6YJ
if (a < b) { ?:$aX@r
data[k] = temp[i++]; |!Uul0O
a = temp; l.>3gjr
} else { fpPB_P{Ua
data[k] = temp[j--]; P*
Z1Rs_
b = temp[j]; \86:f<)P
} \3bT0^7B
} " J4?Sb <
} Kb$6a'u7
c'!+]'Lr
/** :q>uj5%
* @param data YqQAogyh
* @param l S\poa:D`
* @param i |a|##/
*/ .Ce0yAl~
private void insertSort(int[] data, int start, int len) { j9sLR
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); LlF|VR&P.
} yDORL|
E'
} 1m{c8Z.h/d
} [G<SAWFg7
} N5F+h94z]
K%@#a}kRb
堆排序: =XhxD<kI
4#Rq}/h
package org.rut.util.algorithm.support; aYmN'
POi
L?&Trq7i
import org.rut.util.algorithm.SortUtil; %;ZDw@_<
)VM'^sV?
/** 4yDWVd;
* @author treeroot +eVm+4WK
* @since 2006-2-2 "t>WM
* @version 1.0 5uAUi=XA>S
*/ /I@`B2
public class HeapSort implements SortUtil.Sort{ Fu*Qci1Z
>U#j\2!Sg
/* (non-Javadoc) z#Cgd-^7.#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {SJnPr3R
*/ rXF=/
public void sort(int[] data) { qG8-UOUDt
MaxHeap h=new MaxHeap(); @ sG5Do
h.init(data); 'Im&&uSkr
for(int i=0;i h.remove(); ;yDXo\gm
System.arraycopy(h.queue,1,data,0,data.length); *<l9d
} +]S!pyZ"
G&,2>qxKR
private static class MaxHeap{ NVG`XL
?t"bF :!
void init(int[] data){ VK/i5yT5N
this.queue=new int[data.length+1]; V?C_PMa
for(int i=0;i queue[++size]=data; q,fk@GI'2
fixUp(size); 1IeB_t
} qp`G5bw
} 3@^b's'S|}
L~} 2&w
private int size=0; _^Lg}@t
.,( ,<
private int[] queue; xx
EcmS#>
]qNPOnlp
public int get() { Oo`b#!L
return queue[1]; Rss=ihlM
} ko<VB#pOMr
n$YCIW)0
public void remove() { x|IG'R1:Y
SortUtil.swap(queue,1,size--); #Cz6c%yK
fixDown(1); 8-
]7>2?_
} 5jBBk*/\
file://fixdown m[!AOln)
private void fixDown(int k) { &m>txzo
int j; ?$\y0lHw/7
while ((j = k << 1) <= size) { *3W e5
if (j < size %26amp;%26amp; queue[j] j++; 8L}N,6gC4_
if (queue[k]>queue[j]) file://不用交换 #p^r)+\3=
break; vy+9Q5@W
SortUtil.swap(queue,j,k); ^iwM(d]#5
k = j; Ch9A6?=Hj8
} hhvP*a_J
} *tZ#^YG{(
private void fixUp(int k) { G$HLta
while (k > 1) { |Zo_x}0
int j = k >> 1; )iG+pP@.@
if (queue[j]>queue[k]) |uE_aFQs
break; P$|DiiH
SortUtil.swap(queue,j,k); I#tEDeF2
k = j; L5*,l`lET
} _\Cd.
} lC|{{?m
NR)[,b\v
} d#eHX|+
i#~1|2
} UVD::
S hM}w/4
SortUtil: 3*gWcPGe
q61
rNOw_
package org.rut.util.algorithm; u?f3&pA
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import org.rut.util.algorithm.support.BubbleSort; uGQCW\!"4
import org.rut.util.algorithm.support.HeapSort; 6]}Xi:I
import org.rut.util.algorithm.support.ImprovedMergeSort; NOa.K)^k
import org.rut.util.algorithm.support.ImprovedQuickSort; NW9k.D%
import org.rut.util.algorithm.support.InsertSort; u[jdYWQa
import org.rut.util.algorithm.support.MergeSort; >P=xzg79
import org.rut.util.algorithm.support.QuickSort; ::vw1Es
import org.rut.util.algorithm.support.SelectionSort; ^~5tntb.
import org.rut.util.algorithm.support.ShellSort; Sg<''pUh
V_(?mC
/** 6iFd[<.*j
* @author treeroot I#Tl
* @since 2006-2-2 ZH%[wQ~4
* @version 1.0 fXw%2wg
*/ &fj&UBA
public class SortUtil { _V{WXsOx(
public final static int INSERT = 1; l{Hi5x'H
public final static int BUBBLE = 2; AX1'.
public final static int SELECTION = 3; \FTvN
public final static int SHELL = 4; 'EREut,>'
public final static int QUICK = 5; (U`7[F
public final static int IMPROVED_QUICK = 6; 5H 1(C#|
public final static int MERGE = 7; SQ5*?u\
public final static int IMPROVED_MERGE = 8;
W{;!JI7;z
public final static int HEAP = 9; (p14{
z<<` 1wqg
public static void sort(int[] data) { de1&
sort(data, IMPROVED_QUICK); @R2|=ox
} {=g-zsc]K
private static String[] name={ V6$v@Zq
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" u'K<-U8H
}; ]NAPvw#p
2z[Pw0#V
private static Sort[] impl=new Sort[]{ \k1Wh-3
new InsertSort(), dIO\ lL
new BubbleSort(), RL&3 P@r
new SelectionSort(), jSYj+k
new ShellSort(), F'j:\F6C;
new QuickSort(), Y,(eu*Za
new ImprovedQuickSort(), *h =7:*n
new MergeSort(), ',!#?aGV
new ImprovedMergeSort(), iD(K*[;lc
new HeapSort() bY>o%LL-
}; 5h>
gz
iqoPD4A
public static String toString(int algorithm){ E?XA/z !
return name[algorithm-1]; <m(nZ'Zqz2
} p-7dJ
E>g'!
public static void sort(int[] data, int algorithm) { kcYR:;y
impl[algorithm-1].sort(data); W;-Qze\D
} bm+ Mr
QHM39Eu]
public static interface Sort { 2d>PN^x
public void sort(int[] data); UJm`GO
} W"Rii]GK"
=;{S>P!I(t
public static void swap(int[] data, int i, int j) { r=w%"3vb^
int temp = data; k{bba=<
data = data[j]; !c&^b@
yw
data[j] = temp; FCe503qND$
} N4Lk3]
} OKU P