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。 |f"1I4Kg
插入排序: Jd/XEs?<q
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package org.rut.util.algorithm.support; dw< b}2
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import org.rut.util.algorithm.SortUtil; BQ77n2(@
/** @?<1~/sfL
* @author treeroot >]l7AZ:,
* @since 2006-2-2 2lBfc
* @version 1.0 IgtTYxI
*/ ?N!.:~~k
public class InsertSort implements SortUtil.Sort{ %KmhR2v
+K*_=gHF.
/* (non-Javadoc) 9TOqA4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -VRKQNT
*/ }q[IhjD%
public void sort(int[] data) { C2Af$7c
int temp; RB/;qdqR
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `}&}2k
} eWAgYe2
} %(n^reuP
} 5_Opx=
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} iQ_^MzA
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冒泡排序: wDS(zG
[^E{Yz=8,
package org.rut.util.algorithm.support; |+(Hia,X
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import org.rut.util.algorithm.SortUtil; w`r)B`!g
2 *@.hBi
/** H;rLU9b
* @author treeroot lC(g&(\{
* @since 2006-2-2 kv'gs+,e
* @version 1.0 K+J fU
J
*/ R?GF,s<j
public class BubbleSort implements SortUtil.Sort{ :\8&Th}Se
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/* (non-Javadoc) @je vY81)
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GjvTYg~
*/ h|t\rV^
public void sort(int[] data) { dX:#KdK
int temp; @Tg +Kt
for(int i=0;i for(int j=data.length-1;j>i;j--){ gdfG3d$4
if(data[j] SortUtil.swap(data,j,j-1); sz+Uq]Mn
} sOLR *=F{
} QHuh=7u)
} hz_F^gF
} /Jc i1o
n32.W?9
} R~&i8n.
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选择排序: =3Hv
<E.$4/T
package org.rut.util.algorithm.support; ``4lomz>
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import org.rut.util.algorithm.SortUtil; CuD ^@
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/** 86,$ I+
* @author treeroot Bpw<{U
* @since 2006-2-2 >ey-j\_v
* @version 1.0 4C{3>BE
*/ ~
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public class SelectionSort implements SortUtil.Sort { fCxF3m(O
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/* dECH/vJ^
* (non-Javadoc) E[RLBO[*n
* E@F:U*A6%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z*rA~`@K6
*/ I^z$0
public void sort(int[] data) { NJglONO
int temp; 1"82JN|!
for (int i = 0; i < data.length; i++) { JrdH6Zg
int lowIndex = i; XiB]I5(hcc
for (int j = data.length - 1; j > i; j--) { br9`77J8
if (data[j] < data[lowIndex]) { =
5E:C P
lowIndex = j; !bHM:!6^
} dn1Tu6f;|
} hsUP5_
SortUtil.swap(data,i,lowIndex); /:}z*a
} t!Uc,mEV]
} r2*'5jk_
F^]?'`7md
} 6v9{$:
(Q$]X5L
Shell排序: ;#$zHR
m9Uoq[1
package org.rut.util.algorithm.support; ^8V cm*
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import org.rut.util.algorithm.SortUtil; Qp?n0WXZ
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/** pw7_j;}l
* @author treeroot IrRn@15,
* @since 2006-2-2 .F~EQ %
* @version 1.0 "F+Wo&
*/ |7CH
public class ShellSort implements SortUtil.Sort{ CDcs~PR@B
\?} {wh8
/* (non-Javadoc) \4SFD3$&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rwxJR@Ttn
*/ JHf}LZu
public void sort(int[] data) { V#TA%>
for(int i=data.length/2;i>2;i/=2){ y(RbW_
?
for(int j=0;j insertSort(data,j,i); 7 #,+Q(2
} R$cO`L*s
} B(MO!GNg=
insertSort(data,0,1); WPE@yI(
} >NE]TZ.F
FFgy=F
/** UY**3MK
* @param data O'."ca]:5
* @param j rr4yJ;qpeP
* @param i utwh"E&W
*/
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private void insertSort(int[] data, int start, int inc) { 33\b@F7b
int temp; "VWxHRVg4M
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q<JI!n1O
} |y%pP/;&!
} (6\A"jey\x
} O)5-6lm
4PUM.%
} i=2+1;K
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快速排序: j)F~C8*
@F7QQs3
package org.rut.util.algorithm.support; ecf7g)+C
raJyo>xXb5
import org.rut.util.algorithm.SortUtil; t*Q12Q
WaMn[/{
/** y i@61XI
* @author treeroot *8XGo
* @since 2006-2-2 lQ+-g#`
* @version 1.0 I)B2Z(<Q
*/ *pasI.2s#
public class QuickSort implements SortUtil.Sort{ A)7'\JK7b
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/* (non-Javadoc) '`o+#\,b^%
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sZ4H\
*/ ^ O`
public void sort(int[] data) { E$G"R=
quickSort(data,0,data.length-1); R1q04Zj{2
} rbtPG=t_R
private void quickSort(int[] data,int i,int j){ *gT
TI;:
int pivotIndex=(i+j)/2; Ra*9d]N@
file://swap 7SqsVq`[~
SortUtil.swap(data,pivotIndex,j); V
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Vfw $>og!
int k=partition(data,i-1,j,data[j]); jN {ED_
SortUtil.swap(data,k,j); @/7Rp8Fr
if((k-i)>1) quickSort(data,i,k-1); sU}e78m h
if((j-k)>1) quickSort(data,k+1,j); uPp(l4(+
etDB|(,z
} oL6_Ya
/** H+0 *
* @param data Ql V:8:H$
* @param i ?4~lA
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* @param j 6a,YxR\
* @return (?3(=+t
*/ ]JM9 ^F
private int partition(int[] data, int l, int r,int pivot) { r-V./M@L
do{ qzyQ2a_p
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);
^Ta"Uk'
SortUtil.swap(data,l,r); n_+Iw,a'm
} 0+H"$2/
while(l SortUtil.swap(data,l,r); O0I/^
return l; [j/-(?+
} L`p[Dq.
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} lubS{3<
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改进后的快速排序: lk'RWy"pw
Ar$LA"vu4
package org.rut.util.algorithm.support; p*'?(o:=
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in
import org.rut.util.algorithm.SortUtil; 2-6-kS)c
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/** ~& l`"
* @author treeroot = G_6D
* @since 2006-2-2 _1Eyqh`oh
* @version 1.0 5Tu.2.)N
*/ 04"hQt{[
public class ImprovedQuickSort implements SortUtil.Sort { BZBsE
:(F
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private static int MAX_STACK_SIZE=4096; +(<f(]bG
private static int THRESHOLD=10; AX)zSr Xn
/* (non-Javadoc) O| 2Q-
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +1y#=iM{
*/ r3-3*_
public void sort(int[] data) { (1o^Dn3
int[] stack=new int[MAX_STACK_SIZE]; :z:Blp>nK/
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int top=-1; G1l(
int pivot; l1??b
int pivotIndex,l,r; N4:'X6u;
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stack[++top]=0; Cr`
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stack[++top]=data.length-1; j0GI[#
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while(top>0){ g DhwJks
int j=stack[top--]; xv:?n^yt.[
int i=stack[top--]; =~h54/#[I
!2Orklzd1
pivotIndex=(i+j)/2; jz)H?UuDY
pivot=data[pivotIndex]; x6t;=
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SortUtil.swap(data,pivotIndex,j); Vo%d;>!G\;
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file://partition w# e'K-=
l=i-1; |(%H O@i
r=j; FMn&2fH
do{ ff#-USK^R
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]Q3Gj@6
SortUtil.swap(data,l,r); gy{a+Wbc*
} x3Ud0[(
while(l SortUtil.swap(data,l,r); `T70FsSJ
SortUtil.swap(data,l,j); a3;.{6el)H
~laZ(Bma);
if((l-i)>THRESHOLD){ {UcItLjY
stack[++top]=i; ng*%1;P
stack[++top]=l-1; <IVz mzpL
} ! Cl/=0$[L
if((j-l)>THRESHOLD){ K>[H@|k\k
stack[++top]=l+1; qC )VT3
stack[++top]=j; `y}d)"!
} jO55<s94
9QMn%8=j
} X2cR+Ha0
file://new InsertSort().sort(data); R~~rqvLm
insertSort(data); U3}R^W~eb
} >| ?T|
/** T Rw6$CR
* @param data kre&J
*/ (5~C
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private void insertSort(int[] data) { X}(0y
int temp; tWnm{mF
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); NJ>p8P`_k
} 8(>.^667
} :2E1aVo4b
} -`OR6jd
KIo}Gd&
} h
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归并排序: Zjg\jo
u4@e=vWI
package org.rut.util.algorithm.support; {yR)}r
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import org.rut.util.algorithm.SortUtil; C8E C?fSQ
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/** ,SF.@^o@a
* @author treeroot _wNPA1q0J
* @since 2006-2-2 -vHr1I<
* @version 1.0 "<x~{BN?
*/ `{F~'t['
public class MergeSort implements SortUtil.Sort{ </gp3WQ.
| ",[C3Jg
/* (non-Javadoc) {X<4wxeTo
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z,FTsR$x
*/ /;AZ/Ocy!
public void sort(int[] data) { P0e ""9JOo
int[] temp=new int[data.length]; =`~Z@IbdI
mergeSort(data,temp,0,data.length-1); Q)`gPX3F
} &_d/ciq1f
Wi[m`#
private void mergeSort(int[] data,int[] temp,int l,int r){ U}w+`ZLN
int mid=(l+r)/2; MJ,ZXJXs
if(l==r) return ; 1/ pA/UVO
mergeSort(data,temp,l,mid); u\R`IZ&O
mergeSort(data,temp,mid+1,r); ]<T8ZA_Y;
for(int i=l;i<=r;i++){ .l+~)$
temp=data; ZuvPDW%
} NOr
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int i1=l; qmA2bw]
int i2=mid+1; 8A^jD(|
for(int cur=l;cur<=r;cur++){ 0sDwTb"
if(i1==mid+1) !I5~))E
data[cur]=temp[i2++]; 1N9<d,
else if(i2>r) ouVjZF@kS
data[cur]=temp[i1++]; a4(?]ND~6
else if(temp[i1] data[cur]=temp[i1++]; :e]9T3Q
else Y/,$Y]%g
data[cur]=temp[i2++]; OR\DTLIl
} 4r[pMJiq
} /.)[9bQ<
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} 7q!yCU
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改进后的归并排序: N3gNOq&
P$18Xno{
package org.rut.util.algorithm.support; 'DzBp
!ml_S)
import org.rut.util.algorithm.SortUtil; )W]>\=@Y
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/** _t|G@D{
* @author treeroot hA*Z'.[
* @since 2006-2-2 N(:nF5>_
* @version 1.0 e(~'pk"mZ
*/ .3a:n\tY
public class ImprovedMergeSort implements SortUtil.Sort { ^+*GbY$'
@1v3-n=
private static final int THRESHOLD = 10; \ I^nx+l
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/* q*[!>\Z8
* (non-Javadoc) X_u@D;$
* U['JFLF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4L=$K2R2r
*/ 4YDT%_h0
public void sort(int[] data) { LAv:+o(m/
int[] temp=new int[data.length]; BFMS*t`
mergeSort(data,temp,0,data.length-1); wfBuU>
} (@)2PO/
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private void mergeSort(int[] data, int[] temp, int l, int r) { 1mHwYT+
int i, j, k; -(\1r2
Y
int mid = (l + r) / 2; x0\e<x9s
if (l == r) 3s` V)aXP
return; ]By0Xifew
if ((mid - l) >= THRESHOLD) `]`=]*d
mergeSort(data, temp, l, mid); }_{y|NW
else =oE_.ux\
insertSort(data, l, mid - l + 1); .P)s4rQ\
if ((r - mid) > THRESHOLD) WI1T?.Gc
mergeSort(data, temp, mid + 1, r); Hp btj
else 5vD3K!\u
insertSort(data, mid + 1, r - mid); 59{;VY81
lSH ZV
Fd
for (i = l; i <= mid; i++) { I&L.;~
temp = data; (n=9c%w
} "^;#f+0
for (j = 1; j <= r - mid; j++) { j4;Du>obQ
temp[r - j + 1] = data[j + mid]; \U/v;Ijf
} _*s~`jn{H
int a = temp[l]; [IiwN qZ[~
int b = temp[r]; h&lyxYZ+T$
for (i = l, j = r, k = l; k <= r; k++) { >M?H79fF2s
if (a < b) { {7vgHutp
data[k] = temp[i++]; 8h2D+1,PZC
a = temp; f:]u`ziM
} else { w6vLNX
data[k] = temp[j--]; L-#e?Y}$J
b = temp[j]; HHz;0V4w?
} }@d>, 1DU
} 9%sFJ
} }FrEF\}]_7
*kP;{Cb`
/** qQ^d9EK'?~
* @param data 'X9AG6K1
* @param l HLVQ7
* @param i K[kds`
*/ Q4RpK(N
private void insertSort(int[] data, int start, int len) { 'e F%
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); |2O')3p"9
} tl|ijR
} 4S tjj!ew
} Q| ?'(J+
} 13H;p[$
oz LH ]*
堆排序: H
nK!aa
rWA6XDM7
package org.rut.util.algorithm.support; H( vx/q
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import org.rut.util.algorithm.SortUtil; vm8$:W2 }
8) HBh7/
/** }MP>]8Aq
* @author treeroot }`9jH:q-Z
* @since 2006-2-2 9TC)
w|
* @version 1.0 yNBv-oe5
*/ ,]ga[
public class HeapSort implements SortUtil.Sort{ )>V?+L5M
@OzMiN
/* (non-Javadoc) V@[rf<,
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `{[RjM`
*/ {?Od{d9
public void sort(int[] data) { vwmBUix
MaxHeap h=new MaxHeap(); eeM?]J-
h.init(data); 8f|98T"
for(int i=0;i h.remove(); l-<`m#/v
System.arraycopy(h.queue,1,data,0,data.length); M diwRi
} Lkn4<'un
sef]>q
private static class MaxHeap{ ];1R&:t
`rlk|&T1
void init(int[] data){ c+g@Z"es
this.queue=new int[data.length+1]; k=$AhT=e}n
for(int i=0;i queue[++size]=data; 3@_Elu
fixUp(size); b5<okICD
} y \D=Z
N@
} .1#kDM
Xh
F_]
private int size=0; i7 w(S3a
`:p1&OS
private int[] queue; (5a1P;_Y
?2 f_aY ;
public int get() { _[t8rl
return queue[1]; X:|8vS+0gU
} $,ikv?"L
BhkoSkr
public void remove() { v+xB7w
SortUtil.swap(queue,1,size--); uOd&XW
fixDown(1); Jxa4hM0
} -DjJ",h( $
file://fixdown 0^3+P%(o@
private void fixDown(int k) { Dvc&RG
int j; ]{GDS! )
while ((j = k << 1) <= size) { ;wHCj$q
if (j < size %26amp;%26amp; queue[j] j++;
'V
(,.'
if (queue[k]>queue[j]) file://不用交换 ]PR#W_&q
break; b?T
SortUtil.swap(queue,j,k); H43MoC
k = j; \)/yC74r7(
} }ptq
)p
} !RH.|}
private void fixUp(int k) { 2VoKr)
while (k > 1) { @7<uMasfp
int j = k >> 1; [{
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if (queue[j]>queue[k]) \r{W
break; ~ G6"3"
SortUtil.swap(queue,j,k); k[kju%i4
k = j; j Ux
z
} ?LK 2g
} @~ETj26U'
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} 6"f}O<M5H
E3aDDFDH
} )B$;Vs]@i
,|kDsR!
SortUtil: =]C]=
.2)
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package org.rut.util.algorithm; Sa1l=^
tjT>VwqH
import org.rut.util.algorithm.support.BubbleSort; %9oYw9H!
import org.rut.util.algorithm.support.HeapSort; ACq7dLys,B
import org.rut.util.algorithm.support.ImprovedMergeSort; T r0B[QF
import org.rut.util.algorithm.support.ImprovedQuickSort; v<Kmq-b
import org.rut.util.algorithm.support.InsertSort; Av' GB
import org.rut.util.algorithm.support.MergeSort; VVP:w%yW
import org.rut.util.algorithm.support.QuickSort; }g7]?Ee
import org.rut.util.algorithm.support.SelectionSort; @&|l^ 1
import org.rut.util.algorithm.support.ShellSort; ,#?uJTLH
f"1>bW>R+
/** X;v$5UKU
* @author treeroot 6GPp>X
* @since 2006-2-2 6Htg5o|W
* @version 1.0 9o*,P,j'}
*/ D,qu-k[jMI
public class SortUtil { rE9I>|tX
public final static int INSERT = 1; 1K,1X(0rL8
public final static int BUBBLE = 2; }v:jncp
public final static int SELECTION = 3; W6 H,6v
public final static int SHELL = 4; R218(8S
public final static int QUICK = 5; *}k;L74|
public final static int IMPROVED_QUICK = 6; \.YS%"Vz
public final static int MERGE = 7; LI2&&Mw
public final static int IMPROVED_MERGE = 8; Urr#N
public final static int HEAP = 9; om?-WJI
6`vC1PK^
public static void sort(int[] data) { 26T "XW'_
sort(data, IMPROVED_QUICK); MUfG?r\t
} bwiPS1+);
private static String[] name={ B#/Q'V
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9z)5Mdf1j
}; -46C!6a
otggN:^Qw
private static Sort[] impl=new Sort[]{ V,rq0xW
new InsertSort(), T^J >ZDA
new BubbleSort(), a:QDBS2Llv
new SelectionSort(), u#}[ZoI
new ShellSort(), s(X;Eha
new QuickSort(), (Jz;W<E
new ImprovedQuickSort(), #9K-7je;j
new MergeSort(), Sb~MQ_
new ImprovedMergeSort(), RV@*c4KvO+
new HeapSort() @E:,lA
}; mZd ,
9
(?nCyHC%g
public static String toString(int algorithm){ kbM3
return name[algorithm-1]; /0Ax*919j
} jH_JmYd
Q7W>qe%4
public static void sort(int[] data, int algorithm) { ai0XL}!+
impl[algorithm-1].sort(data); O)vp~@|
} / X1 x
,\NFt`]j
public static interface Sort { D9M:^
public void sort(int[] data); nqLA}u4IM
} "I(xgx*
JH7<
public static void swap(int[] data, int i, int j) { G37U6PuZi
int temp = data; e=.]F*:J
data = data[j]; wiiCd
data[j] = temp; R=jI?p
} i-6Z"b{
} 1YH+d0UGn