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。 z 4OR
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插入排序: c`[uQXv
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package org.rut.util.algorithm.support; {b8 Y-
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import org.rut.util.algorithm.SortUtil; bJ5z??
/** FWx*&y~$
* @author treeroot MjeI?k}LJ
* @since 2006-2-2 #esu@kMU`
* @version 1.0 rzY@H }u
*/ jMN@x]6w
public class InsertSort implements SortUtil.Sort{ ^bgm0,M
ROiX=i
/* (non-Javadoc) !wufoK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "VOWV3Z
*/ '%/u103{e
public void sort(int[] data) { */m~m?
int temp; 2nz'/G
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q,+*u%/u
} Ih0>]h-7
} Z`Eb
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} Yoym5<xE
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} V$]a&wM<5
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冒泡排序: HK4`@jYQ
XhkL))FcG
package org.rut.util.algorithm.support; NNrZb?
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import org.rut.util.algorithm.SortUtil; pt;Sk?-1
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/** Ud?d.
* @author treeroot ~.=!5Ry
* @since 2006-2-2 z.F+$6
* @version 1.0 <'yC:HeAwD
*/ 9w<_XXQ
public class BubbleSort implements SortUtil.Sort{ ]d;/6R+Vs
u~Cqdr5
\l
/* (non-Javadoc) I&@@v\$*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FbT&w4Um=
*/ :jp$X|
public void sort(int[] data) {
"S} hcAL/
int temp; +mF 2yh
for(int i=0;i for(int j=data.length-1;j>i;j--){ aD`e]K ^L
if(data[j] SortUtil.swap(data,j,j-1); zU=[Kc=$
} +4vX+;: br
} &(1NOyX&
} G
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} &K*_/Q
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} #6Ph"\G/
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选择排序: CUM~*
DY27' `n6
package org.rut.util.algorithm.support; .VV!$;
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import org.rut.util.algorithm.SortUtil; `6F8Kqltr
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/** n;Wf|>
* @author treeroot {oC69n:
* @since 2006-2-2 K#yH\fn8
* @version 1.0 R')GQ.yYq
*/ T$B4DQ
public class SelectionSort implements SortUtil.Sort { ~x\Q\Cxp
WY UU-
/* s8O+&^(U
* (non-Javadoc) WkmS
* :Fk&2WsW:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U}h
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*/ q.tL'
public void sort(int[] data) { #>oO[uaY
int temp; Bd[}A9O[
for (int i = 0; i < data.length; i++) { $f\-.7OD
int lowIndex = i; vDb}CQ\
for (int j = data.length - 1; j > i; j--) { pAL-Pl9z
if (data[j] < data[lowIndex]) { wBGxJ\+M
lowIndex = j; u _^=]K;
} bhT]zsBK
} 2UJ0%k
SortUtil.swap(data,i,lowIndex); : \`MrI^
} =l_"M
} ~1!kU4
9_dsiM7CT
} :CHd\."%+1
lO@Ba;x
Shell排序: M57(,#g
sbIhg/:ok
package org.rut.util.algorithm.support; ZU6a
L zy|<:K+$
import org.rut.util.algorithm.SortUtil; MM7gMAA.mz
o8"xoXK5xf
/** 4x>e7Kf
* @author treeroot @~HD<K
* @since 2006-2-2 #bH[UId[
* @version 1.0 a}{! %5
*/ GDntGTE~sk
public class ShellSort implements SortUtil.Sort{ Fje%hcV
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/* (non-Javadoc) L0~O6*bk
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s2kynQ#a
*/ MeS$+9jV(
public void sort(int[] data) { zvg&o)/[
for(int i=data.length/2;i>2;i/=2){ {S~$\4vC!
for(int j=0;j insertSort(data,j,i); 2J <Z4Ap
} 14zzWzKx
} >iV(8EgBS
insertSort(data,0,1); IA!Kpg
W
} EeJ]>
1
lvffQ_t
/** k$/].P*!
* @param data <GEn9;\
* @param j BW[K/l~"$:
* @param i K.I r+SB
*/ 548BM^^"r
private void insertSort(int[] data, int start, int inc) { _FgeE`X
int temp; djM=QafB:C
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "yk%/:G+
} 2
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} ,|/$|$'
} omu&:)
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} nrS_t
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快速排序: :4d7%q
6;DPGx
package org.rut.util.algorithm.support; &n
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import org.rut.util.algorithm.SortUtil; 3dLz=.=)'
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/** &kBs'P8>
* @author treeroot !8].Z"5J
* @since 2006-2-2 =%`"
* @version 1.0 RB!E>]
*/ nm.d.A/]Z
public class QuickSort implements SortUtil.Sort{ %{"STbO #>
hW&UG#PY>
/* (non-Javadoc) hd' n"
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N0f}q1S<-A
*/ m~A/.t%=
public void sort(int[] data) { \8ZNXCP
quickSort(data,0,data.length-1); -D(!B56_
} E83nEUs
private void quickSort(int[] data,int i,int j){ Cz%ih#^b
int pivotIndex=(i+j)/2; 71InYIed
file://swap YoA$Gw2
SortUtil.swap(data,pivotIndex,j); O&uOm:/(
Pe.D[]S
int k=partition(data,i-1,j,data[j]); We2=|AB
SortUtil.swap(data,k,j); ZWH`s
if((k-i)>1) quickSort(data,i,k-1); |)?T([
if((j-k)>1) quickSort(data,k+1,j); U$}]zaB
w.\:I[
} th{h)( +H
/** vP!gLN]TV
* @param data ;d4_l:9p
* @param i ;f\0GsA#
* @param j Nx__zC^r
* @return 5ZLH=8L
*/
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private int partition(int[] data, int l, int r,int pivot) { (ydeZx
do{ 1A`u0Y$g
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \kx9V|A'
SortUtil.swap(data,l,r); =v8q
} t!tBN
while(l SortUtil.swap(data,l,r); ;uy/Vc5,Y
return l; \=JKeL|6[S
} 9viC3bj. o
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} ;A_QI>>
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改进后的快速排序: smggr{-
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package org.rut.util.algorithm.support; ?a%
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import org.rut.util.algorithm.SortUtil; _kSus
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/** P<1zXs.H
* @author treeroot F`l1I=;
* @since 2006-2-2 Nf1l{N
* @version 1.0 {sLh=iK
*/ he,T\};
public class ImprovedQuickSort implements SortUtil.Sort { \; ]~K6=
JG `QJ%
private static int MAX_STACK_SIZE=4096; PuWF:'w r
private static int THRESHOLD=10; j,Y=GjfGM
/* (non-Javadoc) W$W7U|Z9y+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tF4"28"h
*/ )u$A!+fo
public void sort(int[] data) { N.]8qzW
int[] stack=new int[MAX_STACK_SIZE]; =B\?(
hn-S$3')`
int top=-1; ;rX4${h
int pivot; X!m/I
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int pivotIndex,l,r; ty ~U~
^t"\PpmK<d
stack[++top]=0; <m!\Ma
stack[++top]=data.length-1; @m6E*2Gg
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while(top>0){ kci H
int j=stack[top--]; F n\)*; ^
int i=stack[top--]; 2neiUNT
xGqZ8v`v
pivotIndex=(i+j)/2; iMSS8J
pivot=data[pivotIndex]; # 8A|-u=3
6gv.n
SortUtil.swap(data,pivotIndex,j); (Q@+W|~
U;_;_
file://partition g)zy^aDf
l=i-1; Kxg09\5i
r=j; rei<{woX
do{ ,,?t>|3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Ut<_D8Tzx
SortUtil.swap(data,l,r); 3KGDS9I
} _\[Zr.y
while(l SortUtil.swap(data,l,r); 3Cpix,Dc
SortUtil.swap(data,l,j); .gB#g{5+J
bAgKOfT
if((l-i)>THRESHOLD){ u{si
stack[++top]=i; &{$\]sv
stack[++top]=l-1; {_ocW@@
} J4<- C\=4
if((j-l)>THRESHOLD){ `Tab'7
stack[++top]=l+1; [p(Y|~
stack[++top]=j; :)+cI?\#
} Tsa&R:SE
9s}--_k?F2
} 5)}xqE"x
file://new InsertSort().sort(data); W>Zce="_gN
insertSort(data); ?wmr~j
} ]p~XTZgW
/** _vad>-=D*U
* @param data A2xORG&FD
*/ !=a8^CV
private void insertSort(int[] data) { Es?~Dd
int temp; $]O\Ryf6
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :g Ze>
} Ih.o;8PpK
} aFLm,
} %;gD_H4mm
R \iU)QP
} U!('`TYe
_c[t.\-`]
归并排序: h4V.$e<T&
c|E
package org.rut.util.algorithm.support; k1X <jC]P
)+{'p0
import org.rut.util.algorithm.SortUtil; C; ! )<(Vw
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/** zdr?1=
* @author treeroot zD?<m
J`
* @since 2006-2-2 :z.<||T
* @version 1.0 JIK;/1
*/ &D/_@\ 0
public class MergeSort implements SortUtil.Sort{ *F=wMWa
2Ddrxc>48
/* (non-Javadoc) hF6EOCY6D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )4j#gHN\
*/ &0M^UvO
public void sort(int[] data) { k)4
int[] temp=new int[data.length]; Q+S>nL!*#1
mergeSort(data,temp,0,data.length-1); $AoN,B>
} =\tg$
% nJ'r?+h
private void mergeSort(int[] data,int[] temp,int l,int r){ 07CGHAxJ`
int mid=(l+r)/2; GMFp,Df
if(l==r) return ; ++xEMP)
mergeSort(data,temp,l,mid); KVJiCdg-
mergeSort(data,temp,mid+1,r); DI+kO(S
for(int i=l;i<=r;i++){ -BR&b2
temp=data; Ucv-}oa-?
} HZR~r:_
i
int i1=l; NX$$4<A1
int i2=mid+1; \s[Uq
for(int cur=l;cur<=r;cur++){ F`f#gpQ
if(i1==mid+1) R7+k=DI
data[cur]=temp[i2++]; !
XA07O[@
else if(i2>r) e%"L79Of6)
data[cur]=temp[i1++]; yt$V<8a
else if(temp[i1] data[cur]=temp[i1++]; UA}k"uM
else d!!5'/tmS
data[cur]=temp[i2++]; u"tv6Qp
} A2]N :=
} "#(]{MY
IS"UBJ6p
} Yk[yG;W
9;kWuP>k4u
改进后的归并排序: )'92{-A0
(eHvp
package org.rut.util.algorithm.support; <Cm:4)~
)t0t*xu#
import org.rut.util.algorithm.SortUtil; jRzR`>5
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YV
/** (1*?2u*j
* @author treeroot v@[MX- ,8
* @since 2006-2-2 TR|G4l?
* @version 1.0 %
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*/ J7$5<
public class ImprovedMergeSort implements SortUtil.Sort { Ry tQNwv3
qd"*Td
private static final int THRESHOLD = 10; P5kkaLzG
db4Ol=
/* LKtr>u
* (non-Javadoc)
!1;DRF
* UEt#;e
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8&B{bS
*/ sJ25<2/
public void sort(int[] data) { 9w (QM-u
int[] temp=new int[data.length]; Rax}r
mergeSort(data,temp,0,data.length-1); 3%>"|Ye}A
} TAIcp*)ZM
gtJUQu p2
private void mergeSort(int[] data, int[] temp, int l, int r) { 4,
8gf2
int i, j, k; =DUsQN!
int mid = (l + r) / 2; 0~Z2$`(
if (l == r) =#SKN\4
return; YB.r-c"Y
if ((mid - l) >= THRESHOLD) ZmU S}
mergeSort(data, temp, l, mid); hI]KT a
else =k'3rm*ld
insertSort(data, l, mid - l + 1); aV,>y"S
if ((r - mid) > THRESHOLD) UII R$,XB
mergeSort(data, temp, mid + 1, r); 3L/>=I{5
else JmtU>2z\
insertSort(data, mid + 1, r - mid); w*OZ1|
rU%\ 8T0f
for (i = l; i <= mid; i++) { .^fq$7Y}7
temp = data; esWgYAc3{
} ySL 31%
for (j = 1; j <= r - mid; j++) { ^;!A`t
temp[r - j + 1] = data[j + mid]; G/bWn@
} 5,|^4
ZA
int a = temp[l]; -aXV}ZY"
int b = temp[r]; ;q59Cr 75
for (i = l, j = r, k = l; k <= r; k++) { mM&H;W
if (a < b) { 8S&`
data[k] = temp[i++]; JIQS'r
a = temp; FD,M.kbg
} else { /k l0(='
data[k] = temp[j--]; x?VX,9;j
b = temp[j]; &S]\)&Yt
} -6aGcPq
} 5a&[NN
} 25o + ?Y<
^D
;X
/** o'?Y0Wt
* @param data 7_?:R2]n
* @param l HFB2ep7N
* @param i OIe {Sx{y
*/ )UO:J7K
private void insertSort(int[] data, int start, int len) { ==l p\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); YR=<xn;m.
} cL7je
} p9y
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} {|O8)bW'
} YO|Kc
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%
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堆排序: r*OSEzGUz
eh&? BP?
package org.rut.util.algorithm.support; mTwz&N\
%e+hM $Q
import org.rut.util.algorithm.SortUtil; ~6Vs>E4G
b`usRoD{+
/** g>CF|Wj
* @author treeroot i-vhX4:bd
* @since 2006-2-2 x~?,Wv|cm
* @version 1.0 x@;XyQq
*/ =\eM
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public class HeapSort implements SortUtil.Sort{ EgFV
S`)KC-
/* (non-Javadoc) MMN2XxS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bW7tJ
*/ v[q2OWcL
public void sort(int[] data) { ;oH17
MaxHeap h=new MaxHeap(); }3!83~Qbx
h.init(data); snK$? 9vh
for(int i=0;i h.remove(); Zm>Q-7r9
System.arraycopy(h.queue,1,data,0,data.length); 4/&Us
} ><mZOTn e;
TxoMCN?7c
private static class MaxHeap{ .9#4qoM'
)O#]Wvr
void init(int[] data){ 4L 85~l
this.queue=new int[data.length+1]; mVcpYyD|k
for(int i=0;i queue[++size]=data; 5wmH3g#0
fixUp(size); S#8wnHq
} Xai ,
} CS)&A4`8
/JaH
private int size=0; %M2.h;9]*\
2l}FOdq
private int[] queue; v7&e,:r2E@
|"8Az0[!
public int get() { $W<H[k&(B
return queue[1]; j7K9T
} {a.{x+!5I-
0}2Uj>!i
public void remove() { LyH8T'C~
SortUtil.swap(queue,1,size--); p%EU,:I6
fixDown(1); 6a[D]46y,2
} VO] Jvf
file://fixdown Q^$IlzG7i
private void fixDown(int k) { y44FejH(v
int j; RIJ+]uir4
while ((j = k << 1) <= size) { $v#Q'?jE
if (j < size %26amp;%26amp; queue[j] j++; JR|yg=E
if (queue[k]>queue[j]) file://不用交换 D|/Azy.[
break; A)Wp W M
SortUtil.swap(queue,j,k); O`~G'l&@T
k = j; )HNbWGu
} 5V!L~#
} S}gUz9ks
private void fixUp(int k) { mf=, 6fx28
while (k > 1) { =K I4
int j = k >> 1; RXh0hD
if (queue[j]>queue[k]) kbJ/7
break; mq`N&ABO!K
SortUtil.swap(queue,j,k); v%n'_2J =^
k = j; M` Jj!
} SL" ;\[uI
} -|B?pR
gRIRc4p
} izsAn"v
M7^PWC
} [X0Wfb}{
JM!rop^
SortUtil: 3P 3x^NI
GzWmXm
package org.rut.util.algorithm; q{@j$fMt0
%Js3Y9AL C
import org.rut.util.algorithm.support.BubbleSort; dRTtDH"%
import org.rut.util.algorithm.support.HeapSort; 767xCP
import org.rut.util.algorithm.support.ImprovedMergeSort; z)xGZ*{=
import org.rut.util.algorithm.support.ImprovedQuickSort; H$au02dpU
import org.rut.util.algorithm.support.InsertSort; ks<gSCB
import org.rut.util.algorithm.support.MergeSort; 4SCb9|/Q
import org.rut.util.algorithm.support.QuickSort; yS p]+
import org.rut.util.algorithm.support.SelectionSort; .",E}3zn
import org.rut.util.algorithm.support.ShellSort; an={h,
1v!Xx+}
/** +6@".<
* @author treeroot I~y[8
* @since 2006-2-2 3C 84b/A
* @version 1.0 ${0+LhST
*/ k<wX ??'
public class SortUtil { vNlYk
public final static int INSERT = 1; Iz,a
Hrq
public final static int BUBBLE = 2; $]|fjB#D
public final static int SELECTION = 3; !31v@v:)
public final static int SHELL = 4; H>AQlO+ J
public final static int QUICK = 5; CT+pkNC
public final static int IMPROVED_QUICK = 6; jJdw\`
public final static int MERGE = 7; 7].tt
public final static int IMPROVED_MERGE = 8; a97A{7I&
public final static int HEAP = 9; [_*%
YqX/7b+
public static void sort(int[] data) { VFz(U)._
sort(data, IMPROVED_QUICK); 2#~5[PtP^
} KGdL1~
private static String[] name={ @;2,TY>Di
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8`XpcK-0
}; zRN_`U
0^nnR7
private static Sort[] impl=new Sort[]{ Z7%
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new InsertSort(), ~F~g$E2 }
new BubbleSort(), D@*<p h=
new SelectionSort(), ba& \~_4
new ShellSort(), pE@Q
(9`b{
new QuickSort(), F?&n5