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。 5X0QxnnV
插入排序: fp{G|.SA
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package org.rut.util.algorithm.support; ZZ("-#?
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import org.rut.util.algorithm.SortUtil; fz3lR2~G
/** }%$OU = T
* @author treeroot ?KB@Zm+#~
* @since 2006-2-2 Ad/($v5+
* @version 1.0 xI?0N<'.*q
*/ eRs&iK2y
public class InsertSort implements SortUtil.Sort{ ox[ .)v
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/* (non-Javadoc) 3V}(fnv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 96=Z"
*/ o&z!6"S<
public void sort(int[] data) { 3C M^j<9
int temp; %G[/H.7s-
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0 _A23.Y
} hU"F;4p
} o\4CoeG
} BxdX WO
?ok)>P
} eLV.qLBUs
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冒泡排序: /;l[I=VI
q>-R3HB
package org.rut.util.algorithm.support; >aG= T{
KQ{Lt?S
import org.rut.util.algorithm.SortUtil; uE`r /=4
BSgTde|3y
/** 3+(z_!Qh
* @author treeroot b+{r!D}~
* @since 2006-2-2 `\N]wlB2/b
* @version 1.0 8eJE>g1J
*/ ?Vc0)
public class BubbleSort implements SortUtil.Sort{ %
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gd>
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/* (non-Javadoc) _Yq@ FOu
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NiA4JgM]v
*/ #{*LvI&
public void sort(int[] data) { &RO7{,`
int temp; aQUGNa0+d
for(int i=0;i for(int j=data.length-1;j>i;j--){ _ym"m,,7?
if(data[j] SortUtil.swap(data,j,j-1); ,mKObMu
} ',)7GY/n~
} =6\LIbO
} [T^?Q%h
} bL`eiol6
0V`[Zgf
} LZ<[ll#C
0<.RA%dj
选择排序: `}fw1X5L
cWa)#:JOV
package org.rut.util.algorithm.support; V%NeZ1{ e
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import org.rut.util.algorithm.SortUtil; h@1!T
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/** ,_ .v_
* @author treeroot )`+YCCa6F
* @since 2006-2-2 (Rd$VYuf
* @version 1.0 gzdG6"
*/ obo&1Uv,/
public class SelectionSort implements SortUtil.Sort { 80;n|nNB
FTf<c0
/* P^)q=A8Z#
* (non-Javadoc) jc:s` 4
* \/5RL@X}
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?*u*de[,
*/ S6D^3n
public void sort(int[] data) { gl7|H&&xV
int temp; Hd &{d+B
for (int i = 0; i < data.length; i++) { f p[,C1U
int lowIndex = i; uQ/h'v
for (int j = data.length - 1; j > i; j--) { l]6%lud8_
if (data[j] < data[lowIndex]) { _}gtcyx
lowIndex = j; v }\,o%t^
} *%gF2@=r8F
} )rm4cW_
SortUtil.swap(data,i,lowIndex); Or0O/\D)
} M.[rLJZ4
} ,S&z<S_
rwf^,r"r
} 6b=q-0yj
L'Q<>{;Ig
Shell排序: =,V|OfW
v=?2S
package org.rut.util.algorithm.support; s?C&s|'.
@xAfZb2 E
import org.rut.util.algorithm.SortUtil; Z`Z5sj 4{
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/** 1AD]v<M
* @author treeroot Jxl6a:
* @since 2006-2-2 7cTk@Gq
* @version 1.0 q3P+9/6
*/ I)SG wt-
public class ShellSort implements SortUtil.Sort{ oBQm05x"
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/* (non-Javadoc) 3V<&|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 19UN*g3(
*/ $E!J:Y=
public void sort(int[] data) { ,,4
GNbBC
for(int i=data.length/2;i>2;i/=2){ 7'lZg<z{~j
for(int j=0;j insertSort(data,j,i); ^Q}eatEn
} r'7LR
} R.9V,R5
insertSort(data,0,1); j2 %^qL
} \cJa;WM>
PkuTg";
/** (5Nv8H8|
* @param data +0l`5."d
* @param j 2?q(cpsN
* @param i Cb;WZ3HR
*/ ti @kKz
private void insertSort(int[] data, int start, int inc) { /~p+j{0L3W
int temp; =/0=$\Ws
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); {w6/[-^
} `Ityi}
} .ic:`1
} ]/X(V|t
RP4Ku9hk
} ~ 5"JzT
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快速排序: {Qu"%h.Al
K4ZolWbU
package org.rut.util.algorithm.support; eOT+'[3"
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import org.rut.util.algorithm.SortUtil; RW'nUL?_\
]; $] G-
/** 5*g]qJF
* @author treeroot 9LC&6Q5O&
* @since 2006-2-2 i5}4(sV
* @version 1.0 5` D-
*/
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public class QuickSort implements SortUtil.Sort{ (qMj-l
,M5}4E7L%s
/* (non-Javadoc) w f.T3
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J Yb}Zw;
*/ 2/
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public void sort(int[] data) { ~wm;;#_O
quickSort(data,0,data.length-1); bC!`@/
} I^\&y(LJF
private void quickSort(int[] data,int i,int j){ *XOJnyC_H
int pivotIndex=(i+j)/2; gY-5_Ab
file://swap |OO in]5
SortUtil.swap(data,pivotIndex,j); lCd@jB{
KL,/2(
int k=partition(data,i-1,j,data[j]); +0wT!DZW\=
SortUtil.swap(data,k,j); .wA+S8}S
if((k-i)>1) quickSort(data,i,k-1); !%(h2]MQ
if((j-k)>1) quickSort(data,k+1,j); J5Z%ImiT^O
g^Yl TB
} Bh`N[\r
/** iRo.RU8>
* @param data f_ ^1J
* @param i VZka}7a
* @param j URgk^nt2p
* @return N7r_77%m0
*/ qVqRf.-\
private int partition(int[] data, int l, int r,int pivot) { J@pb[O L,
do{ 1+;C`bnA
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); %q;jVj[
SortUtil.swap(data,l,r); A5:qKaAq
} 1F'1>Bu~
while(l SortUtil.swap(data,l,r); eK_*2=;XRW
return l; EI>6Nh
} >Hb^P)3
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} w.\w1:d
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改进后的快速排序: ^mWybPqx
XKA&XpF
package org.rut.util.algorithm.support; 0kQPJWF
bi y4d
import org.rut.util.algorithm.SortUtil; 5RH2"*8T
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/** 1 2++RkL#
* @author treeroot V-I(WzR9y
* @since 2006-2-2 LH 3}d<{
* @version 1.0 B&+`)E{KB
*/ 7'-Lp@an
public class ImprovedQuickSort implements SortUtil.Sort { uJHu>M}~
1(zsOeX
private static int MAX_STACK_SIZE=4096; Md6]R-l@
private static int THRESHOLD=10; =(a1+.O
/* (non-Javadoc) 4H5pr
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q+KzIde|%
*/ o@]So(9f
public void sort(int[] data) { e~ aqaY~}
int[] stack=new int[MAX_STACK_SIZE]; "\Egs)\
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int top=-1; a07@C
int pivot; {8,<ZZ_
int pivotIndex,l,r; jV#ahNq;
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stack[++top]=0; n,eJ$2!J
stack[++top]=data.length-1; =cN&A_L(
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while(top>0){ F-D]TRG/*]
int j=stack[top--]; _LAS~x7,
int i=stack[top--]; ihh4pD27g
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pivotIndex=(i+j)/2; }pk#!N
pivot=data[pivotIndex]; E_F5(xSA
,\ 2a=Fp
SortUtil.swap(data,pivotIndex,j); Uie?9&3
{GvTfZfp
file://partition O3N0YGhJ
l=i-1; fP3_d
r=j; Y+4o B
do{ {X2`&<i6
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); BR'I+lQ
SortUtil.swap(data,l,r); ,BF E=:ZIK
} "fg](Cp[z
while(l SortUtil.swap(data,l,r); cJM:
SortUtil.swap(data,l,j); S[tE&[$(p
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if((l-i)>THRESHOLD){ y%sroI('y
stack[++top]=i; ^qCkt1C-M
stack[++top]=l-1; LG~S8u
} JKer//ng4
if((j-l)>THRESHOLD){ !R*-R.%
stack[++top]=l+1; Q^p|Ldj
stack[++top]=j; h/x0]@M&
} $^&ig
[Q\GxX.
} ?u4INZ0W
file://new InsertSort().sort(data); <Dx]b*H
insertSort(data); @
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} 8 #ndFpu
/** LPG`^SA
* @param data %{3
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*/ awvDe
private void insertSort(int[] data) { h25G/`
int temp; IHgeQ F
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); f84:hXo6
} ,uzN4_7u
} *. 3N=EO
} fzjU<?}
|
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} T&86A\D\z
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归并排序: p8s:g~ W
"<}&GcJbz
package org.rut.util.algorithm.support; J 5h+s-'
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import org.rut.util.algorithm.SortUtil; 5Z4-Z
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/** zEZLKWm9-
* @author treeroot 0!z@2[Pe66
* @since 2006-2-2 0y&I/2
* @version 1.0 b':|uu*/
*/ }F+zs*S
public class MergeSort implements SortUtil.Sort{ Qu,8t8
d:G]1k;z
/* (non-Javadoc) I@Xn3oN
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O]f/r,4@
*/ \rykBxs
public void sort(int[] data) { mMMQ|ea
int[] temp=new int[data.length]; o]IjK
mergeSort(data,temp,0,data.length-1); IVr 2y8K
} >NB?&|
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private void mergeSort(int[] data,int[] temp,int l,int r){ H:p Z-v*
int mid=(l+r)/2; fYE(n8W3
if(l==r) return ; /6O??6g
mergeSort(data,temp,l,mid); 1FtM>&%4
mergeSort(data,temp,mid+1,r); jGrN\D?h
for(int i=l;i<=r;i++){ RzhWD^b B
temp=data; v(OBXa9
} \c[IbL07
int i1=l; Mg#j3W}]
int i2=mid+1; 2MA]j T
for(int cur=l;cur<=r;cur++){ 9w9jpe#
if(i1==mid+1) DF6c|
data[cur]=temp[i2++]; qS&%!
else if(i2>r) r_EcMIuk
data[cur]=temp[i1++]; fw oQ'&
else if(temp[i1] data[cur]=temp[i1++]; 8A{_GH{:
else qyHZ M}/
data[cur]=temp[i2++]; nUq<TJ
} [![%9'+P
} kt4d;4n
fF*`'i=!
} =h(W4scgqX
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改进后的归并排序: qo)?8kx>l
3D9!M-
package org.rut.util.algorithm.support; Pmi#TW3X
/~4"No@
import org.rut.util.algorithm.SortUtil; (;VVCAoy
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/** kj+#TnF-
* @author treeroot VL[)[~^
* @since 2006-2-2 gPC*b+
* @version 1.0 LJX-AO.4
*/ )} DUMq7
public class ImprovedMergeSort implements SortUtil.Sort { pf4 ^Bk}e
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private static final int THRESHOLD = 10; "m{,~'x
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/* 4'KOpl
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* (non-Javadoc) [P|[vWO
* 1_$xSrwcF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :V)lbn\
*/ C0=9K@FCb
public void sort(int[] data) { y}C`&nW[=
int[] temp=new int[data.length]; J/7R\;q`~o
mergeSort(data,temp,0,data.length-1); #S%Q*k<hw
} y]%w )4PS
m8623DB"
private void mergeSort(int[] data, int[] temp, int l, int r) { QZ
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int i, j, k; 3Rm#-T s
int mid = (l + r) / 2; UN"(5a8.
if (l == r) s<x1>Q7X~
return; nS()u}c;r
if ((mid - l) >= THRESHOLD) U $Qv>7
mergeSort(data, temp, l, mid); @v\*AYr'M
else q.Nweu!jQ
insertSort(data, l, mid - l + 1); tU"raP^=
if ((r - mid) > THRESHOLD) 4[ryKPa,
mergeSort(data, temp, mid + 1, r); {%w!@-
else bYe;b><G
insertSort(data, mid + 1, r - mid); Oo?,fw
1GEK:g2B
for (i = l; i <= mid; i++) { R];Oxe
temp = data; elG;jB
} [nxE)D
for (j = 1; j <= r - mid; j++) { X &2oPo
temp[r - j + 1] = data[j + mid]; hP J4Oj1O
} X\p,%hk \
int a = temp[l]; \b}~2oX
int b = temp[r]; wPbkUVO
for (i = l, j = r, k = l; k <= r; k++) { x*oWa,
if (a < b) { &iN--~}!$
data[k] = temp[i++]; 79zJ\B_
a = temp; .@iFa3
} else { \qi|Js*{
data[k] = temp[j--]; ]E3U
J!!
b = temp[j]; qDWsvx]
} m?s}QGSka
} # N~,F@t
} w",?
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/** WS& kx~oQ
* @param data TJ?g%
* @param l =Nz0.:
* @param i !gwjN_ZJ^
*/ 3E}EBJLsZ
private void insertSort(int[] data, int start, int len) { D j\e@?Y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n{*e 9Aw
} nZR!*$}A
} V+?]S
} GC8}X;((Y
} y(
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堆排序: 6VD1cb\lF
ryO$6L
package org.rut.util.algorithm.support; C@o%J.9"#
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import org.rut.util.algorithm.SortUtil; A`O <6
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/** _9:@Vl]Q@
* @author treeroot KsAH]2Q%
* @since 2006-2-2 F=G{)*Ih
* @version 1.0 Kr L>FI
*/ x4Rk<Th"o
public class HeapSort implements SortUtil.Sort{ \(I6_a_{
QGiAW7b5
/* (non-Javadoc) 4^c-D
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SEKN|YQV/t
*/ fbZibcQ%k
public void sort(int[] data) { OH<?DcfeL
MaxHeap h=new MaxHeap(); x}fn'iUnm
h.init(data); OLq
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for(int i=0;i h.remove(); B68H&h]D#'
System.arraycopy(h.queue,1,data,0,data.length); B1N)9%
} ^[TV;9I*
!- C' }
private static class MaxHeap{ >=ot8%.!,B
2k7bK6=nm
void init(int[] data){ ~7q uTp)
this.queue=new int[data.length+1]; Vu0KtG9
for(int i=0;i queue[++size]=data; B~r}c4R{7
fixUp(size); ]^"k8v/
} ]pTvMom$6
} #i QX6WF
@-.? B
private int size=0; Z\X'd_1!
qZ2&Xw.{1
private int[] queue; ScnY3&rc
toa-Wa{
public int get() { pLoy
return queue[1]; 2x$x;
\*j
} g;F"7
^sg
}4jC_ZAupt
public void remove() { ty1fcdFZM
SortUtil.swap(queue,1,size--); D>ai.T%n
fixDown(1); T!q_/[i~7
} o|S)C<w
file://fixdown <MD;@_Nz\
private void fixDown(int k) { ru.5fQU
int j; 74vmt<Q
while ((j = k << 1) <= size) {
t\U$8l_;
if (j < size %26amp;%26amp; queue[j] j++; 2iXoj&3e
if (queue[k]>queue[j]) file://不用交换 v<rF'D2
break; L0Vgo<A
SortUtil.swap(queue,j,k); W|Ldu;#
k = j; Iur9I>8h
} $&-5;4R'0
} (;o*eFC F
private void fixUp(int k) { irxz l3
while (k > 1) { |:iEfi]j
int j = k >> 1; ~P1_BD(
if (queue[j]>queue[k]) Unl?fXI
break; ='Oj4T
SortUtil.swap(queue,j,k); G^h_YjR`*
k = j; /MMtTB
H
} i3V/`)iz
} o 5Zyh26
^^LjI
} vd~U@-C=R
:=g.o;(/N
} vgPUIxB@
D(Ix!G/
SortUtil: !c8L[/L
/J%do]PDl
package org.rut.util.algorithm; 2YQ#-M
&{^eU5
import org.rut.util.algorithm.support.BubbleSort; XDmbm*~i
import org.rut.util.algorithm.support.HeapSort; P[gO85
import org.rut.util.algorithm.support.ImprovedMergeSort; v+q<BYq
import org.rut.util.algorithm.support.ImprovedQuickSort; hYt7kq!"
import org.rut.util.algorithm.support.InsertSort; >S&U.
import org.rut.util.algorithm.support.MergeSort; wz#[:2
import org.rut.util.algorithm.support.QuickSort; TL-i=\{L:d
import org.rut.util.algorithm.support.SelectionSort; eqzTQen8q
import org.rut.util.algorithm.support.ShellSort; =t+ ('
_x\m|SF_g
/** qb7^VIo%c
* @author treeroot }5S2p@W)
* @since 2006-2-2 Dt}dp_
* @version 1.0 F?*k}]Gi
*/ ?vbDB 4
public class SortUtil { rZC3\,W
public final static int INSERT = 1; !'c| N9
public final static int BUBBLE = 2; d.}}s$Q
public final static int SELECTION = 3; jn=ug42d
public final static int SHELL = 4; Lt<oi8'N
public final static int QUICK = 5; -{x(`9H;
public final static int IMPROVED_QUICK = 6; |'w^ n
public final static int MERGE = 7; b~wKF0vq
public final static int IMPROVED_MERGE = 8; 'C]jwxy
public final static int HEAP = 9; ?MZ:_'2p
"\T"VS^pd
public static void sort(int[] data) { `7B14:\A
sort(data, IMPROVED_QUICK); fEiJ~&{&
} 70`M,``
private static String[] name={ +{>.Sk'$
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"
_"f<Ol[!
}; <q6`~F~|
0/A-#'>
private static Sort[] impl=new Sort[]{ 2ij/N%l
new InsertSort(), U>3
>Ex
new BubbleSort(), .ev\M0Dt
new SelectionSort(), 1M+Zkak7p
new ShellSort(), Ru7L>(Njs
new QuickSort(), 8&Wx@QI
new ImprovedQuickSort(), 6Kht:WE
new MergeSort(), Vu|dV\N0*
new ImprovedMergeSort(), cyc>_$/;1
new HeapSort() sFx$>:$
}; %Rn:GK
wO.B~`y
public static String toString(int algorithm){ u[[/w&UV.,
return name[algorithm-1]; ( -2R{!A
} }:^X X0:FK
KZ\dB;W<|
public static void sort(int[] data, int algorithm) { 6aSM*S)
impl[algorithm-1].sort(data); _h~p:=
} c%yh(g
fv|%Ocm
public static interface Sort { o[{&!t
public void sort(int[] data); }~GV'7d1
} Q0SW;o7
a@k.$
public static void swap(int[] data, int i, int j) { 0#
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int temp = data; P%jkKE?B4
data = data[j]; [Yoa"K
data[j] = temp; Ltg-w\?]
} x 8M#t(hw
} `vH&K{