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[JAVA]用Java实现的各种排序

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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。 { pk]p~  
插入排序: 7mtX/w9  
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package org.rut.util.algorithm.support; VCQo3k5 {  
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import org.rut.util.algorithm.SortUtil; +l<l3uBNS  
/** BV=~ !tsl  
* @author treeroot ppzQh1  
* @since 2006-2-2 y85R"d  
* @version 1.0 6|Xe ],u  
*/ t4Pi <m:7  
public class InsertSort implements SortUtil.Sort{  D`3`5.b  
FA!!S`{\  
/* (non-Javadoc) hO; XJyv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &gsBbQ+qA  
*/ T( fcE  
public void sort(int[] data) { ~|( eh9  
int temp; aKz:hG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y3OF+;E  
} vp(ow]Q  
} #jM-XK  
} Bu"5NB  
P7\?WN$p  
} .FC|~Z1T<F  
\IZY\WU}2  
冒泡排序: K/M2L&C  
A\<W x/  
package org.rut.util.algorithm.support; ' r/xBj[Z  
.?kq\.rQ  
import org.rut.util.algorithm.SortUtil; v n4z C  
V6Y0#sTU  
/** CD[}|N  
* @author treeroot lRR A2Kql  
* @since 2006-2-2 <nc6 &+  
* @version 1.0 vwAtX($  
*/ u6SQq-)d  
public class BubbleSort implements SortUtil.Sort{ 8]Q#P  
_{/[&vJ  
/* (non-Javadoc) G_<4% HM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1$H<Kjsm  
*/ ]94`7@  
public void sort(int[] data) { `IT]ZAem`/  
int temp; -ARks_\  
for(int i=0;i for(int j=data.length-1;j>i;j--){ i!)\m0Wm  
if(data[j] SortUtil.swap(data,j,j-1); 0ZJj5<U  
} ($-m}UF\/  
}  zPN:)  
} Raf(m,o(  
} -\n%K  
%`*On~  
} us+z8Mz  
H*Tzw,f~ v  
选择排序: Rqr>B(|  
bvS6xU- J  
package org.rut.util.algorithm.support; 3~:9ZWQ/  
J4u>77I  
import org.rut.util.algorithm.SortUtil; [0vqm:P  
O L 9(~p  
/** " =6kH,  
* @author treeroot )]kxLf#  
* @since 2006-2-2 Whe-()pG{  
* @version 1.0 p>B-Ubu  
*/ <Xw\:5 F<7  
public class SelectionSort implements SortUtil.Sort { _@W1?;yD  
FLX n%/  
/* -e"A)Bpl(  
* (non-Javadoc) T^vhhfCUr  
* ;GIA`=a %  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >wb Uxl%{5  
*/ 3g3f87[  
public void sort(int[] data) { DL uaM?7  
int temp; dz!m8D0  
for (int i = 0; i < data.length; i++) { zl( o/n  
int lowIndex = i; 5XV|*O;  
for (int j = data.length - 1; j > i; j--) { -Nn< pq  
if (data[j] < data[lowIndex]) { eph2&)D}Ep  
lowIndex = j; <cU%yA710  
} Tl2(%qB  
} =#=}|Q}  
SortUtil.swap(data,i,lowIndex); #p"$%f5Q_  
} FzNj':D  
} d0-4KN2  
*2pf> UzL  
} CK1A$$gnz  
uehu\umt=  
Shell排序: )/)[}wN;j  
x"!`JDsS  
package org.rut.util.algorithm.support; B oxtP<C"  
GUZ.Pw  
import org.rut.util.algorithm.SortUtil; ;wkMa;%`g|  
` FOCX;  
/** x-]:g&5T  
* @author treeroot V0BT./ B\<  
* @since 2006-2-2 D|ra ;d  
* @version 1.0 (cyvE}g  
*/ 6l[ v3l"t  
public class ShellSort implements SortUtil.Sort{ `So/G  
+(PUiiP'"v  
/* (non-Javadoc) *ow`}Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n}t 9Nf_  
*/ F]D{[dBf  
public void sort(int[] data) { >]8(3&zd  
for(int i=data.length/2;i>2;i/=2){ s1h|/7gG  
for(int j=0;j insertSort(data,j,i); RMiDV^.u`  
} UI"UBZZ$  
} 2gh=0%|\gx  
insertSort(data,0,1); |L`U2.hb  
} <bb!BS&w  
>I/@GX/  
/** ;!G#Y Oe  
* @param data $v #  
* @param j bX$1PY X  
* @param i j1A%LS;c_  
*/ dNhb vzl(  
private void insertSort(int[] data, int start, int inc) { CAC%lp  
int temp; 1DcX$b  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g?Tev^D  
} 5:jme$BI  
} Arm'0)B>  
} j#~~_VA~  
/Ry% K4$  
} )z\#  
v bn=ywz  
快速排序: kDDC@A $  
\Oq8kJ=  
package org.rut.util.algorithm.support; *hru);OJr  
g$^-WmX\m  
import org.rut.util.algorithm.SortUtil; ~TsRUT  
YoW)]n  
/** URs]S~tk  
* @author treeroot ox%j_P9@:  
* @since 2006-2-2 AH:uG#  
* @version 1.0 e4 ,SR(O>  
*/ f;Oh"Yt  
public class QuickSort implements SortUtil.Sort{ Zp^O1&\SK?  
v/9DD%An  
/* (non-Javadoc) !Ve0:$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EQ ee5}  
*/ qB (Pqv  
public void sort(int[] data) { #>("(euXMF  
quickSort(data,0,data.length-1); f}"eN/T  
} 3>^]r jFw  
private void quickSort(int[] data,int i,int j){ Y!_{:2H8p  
int pivotIndex=(i+j)/2; PPH;'!>s"  
file://swap ch :rAx  
SortUtil.swap(data,pivotIndex,j); &3Yj2 Fw  
7P<f(@0h$E  
int k=partition(data,i-1,j,data[j]); /'aqQ K<  
SortUtil.swap(data,k,j); (Hj[9[=  
if((k-i)>1) quickSort(data,i,k-1); ;Mo_B9  
if((j-k)>1) quickSort(data,k+1,j); p]EugLEmG  
]"b:IWPeI  
} ?tL'  X  
/** J@2wPKh?Yp  
* @param data |Z94@uB  
* @param i )~)l^0X  
* @param j nH&z4-1Y?  
* @return NLY=o@<  
*/ Lc5zu7ncg  
private int partition(int[] data, int l, int r,int pivot) { &Ap9h# dK  
do{ Vy I\Jmr  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bsDA&~)s  
SortUtil.swap(data,l,r); ((+XzV>  
} E I(e3  
while(l SortUtil.swap(data,l,r); n"T ^  
return l; tp}/>gU!  
} cI'n[G  
xi(1H1KN5B  
} 'fl< ac,.  
RSh_~qMX  
改进后的快速排序: OPDT:e86Y=  
zmGHI! tP  
package org.rut.util.algorithm.support; n|)((W  
%K4M`R|2]  
import org.rut.util.algorithm.SortUtil; s$isDG#Sr  
Y&j`HO8f  
/** m9A%Z bQ^  
* @author treeroot 5RN!"YLI3  
* @since 2006-2-2 84.L1|k  
* @version 1.0 Mq)]2>"v  
*/ 6"* <0  
public class ImprovedQuickSort implements SortUtil.Sort { OQ hQ!6  
T2S_> #."l  
private static int MAX_STACK_SIZE=4096; PXYLL X\3  
private static int THRESHOLD=10; sWte&  
/* (non-Javadoc) Z::I3 Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O^`EuaL  
*/ 0S$k;q  
public void sort(int[] data) { (&Rk#iU 2  
int[] stack=new int[MAX_STACK_SIZE]; NGSts\D'}  
d/ ^IL*O  
int top=-1; \/YRhQ  
int pivot; q+\<%$:u  
int pivotIndex,l,r; 2I [zV7 @t  
` = O  
stack[++top]=0; wQUl!s7M;  
stack[++top]=data.length-1; &&9 |;0 <  
NOQ^HEi  
while(top>0){ ,M.}Qak^  
int j=stack[top--]; ;&O?4?@4  
int i=stack[top--]; p"p~Bx  
a%B&F|u  
pivotIndex=(i+j)/2; '~&W'='b;  
pivot=data[pivotIndex]; @6yc^DAA  
;6P>S4`w  
SortUtil.swap(data,pivotIndex,j); ?iP7Ki  
Pgr2 S I  
file://partition (T#$0RFq  
l=i-1; qisvGHo  
r=j; AJ7^'p9Y  
do{ @!fUp b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &]o-ZZX  
SortUtil.swap(data,l,r); XQ}J4J~Vm  
} 8C@u+tx  
while(l SortUtil.swap(data,l,r); / S]RP>cQ  
SortUtil.swap(data,l,j); ;7z6B|8  
?'TK~,dG/  
if((l-i)>THRESHOLD){ isL zgN%  
stack[++top]=i; q7Hf7^a  
stack[++top]=l-1; _x<NGIz  
} g77M5(ME  
if((j-l)>THRESHOLD){ sQ#e 2  
stack[++top]=l+1; hz4?ku  
stack[++top]=j; n8<?<-2  
} 9)1Ye  
j+gxn_E  
} =|z:wlOs  
file://new InsertSort().sort(data); ; zJb("n  
insertSort(data); 71R,R,  
} AhN3~/u%7  
/** /ovVS6Ai  
* @param data d-_V*rYU  
*/ X?'cl]1?  
private void insertSort(int[] data) { +_7a/3kh  
int temp; f"FFgQMkv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ad: qOm  
} .g*N +T6O  
} X>[i<ei  
} (0NffM1  
gUru=p  
} "5V;~}=S  
60!%^O =  
归并排序: _eiqs  
i7.8H*z'  
package org.rut.util.algorithm.support; tRdf:F\X  
T"z<D+ pN  
import org.rut.util.algorithm.SortUtil; X!Z)V)@J8  
{oqbV#/&  
/** %42a>piev  
* @author treeroot %LMpErZO  
* @since 2006-2-2 G(a5@9F  
* @version 1.0 RhE~Rwbx  
*/ tr<f ii 3<  
public class MergeSort implements SortUtil.Sort{ `HRL .uX  
e%JIqKS  
/* (non-Javadoc) h+1|.d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) skcyLIb  
*/ `MSig)V  
public void sort(int[] data) { cuQ!"iH  
int[] temp=new int[data.length]; &!CVF  
mergeSort(data,temp,0,data.length-1); 754MQK|g  
} /9R0}4i7  
g{yw&q[B=  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5)%ahmY  
int mid=(l+r)/2; $v@$C4  
if(l==r) return ; juOStTq<  
mergeSort(data,temp,l,mid); !Ap5Uwd  
mergeSort(data,temp,mid+1,r); xx`YBn~"  
for(int i=l;i<=r;i++){ *lSu=dk+  
temp=data; LIcc0w3  
} [LnPV2@e  
int i1=l; Vn^GJ'^  
int i2=mid+1; A7X a  
for(int cur=l;cur<=r;cur++){ X,v.1#[  
if(i1==mid+1) U.<j2K um  
data[cur]=temp[i2++]; S/`#6  
else if(i2>r) ez'NHodwk2  
data[cur]=temp[i1++]; MV"n{1B  
else if(temp[i1] data[cur]=temp[i1++]; s?EQ  
else ynIC (t  
data[cur]=temp[i2++]; uB  I/3aQ  
} @njNP^'Kx  
} "u^Erj# /  
Nu"v .]Y2  
} |eu8;~A  
ytIPY7E  
改进后的归并排序: oVpZR$  
WoZU} T-  
package org.rut.util.algorithm.support; G]ek-[-  
j?N<40z  
import org.rut.util.algorithm.SortUtil; Mr)t>4  
h=A  
/** "b hK %N;  
* @author treeroot Nnh\FaI  
* @since 2006-2-2 NuQ!huh  
* @version 1.0 ev$:7}h=  
*/ F\D iT|?}  
public class ImprovedMergeSort implements SortUtil.Sort { VP#KoX85  
C.S BJ  
private static final int THRESHOLD = 10; MI `qzC*%  
w6V/Xp][U  
/* ;|Mfq` s  
* (non-Javadoc) WA (x]""  
* y47N(;vy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \V$qAfP)  
*/ \AwkK3  
public void sort(int[] data) { \}jA1oy  
int[] temp=new int[data.length]; 3*h"B$g!  
mergeSort(data,temp,0,data.length-1); lJdBUoO  
} (fF8)4l  
]:gW+6w"C  
private void mergeSort(int[] data, int[] temp, int l, int r) { R 0RxcB tG  
int i, j, k; ]<^2B?}  
int mid = (l + r) / 2; <r#FI8P;X  
if (l == r) _2jL]mB  
return; PB@IPnB-  
if ((mid - l) >= THRESHOLD) Vg NB^w  
mergeSort(data, temp, l, mid); L/ 7AGR|;C  
else @ual+=L  
insertSort(data, l, mid - l + 1); w7@`:W  
if ((r - mid) > THRESHOLD) MrR`jXz  
mergeSort(data, temp, mid + 1, r); B.; qvuM~  
else H'k}/<%Q  
insertSort(data, mid + 1, r - mid); %hSQ\T<8[o  
j,j|'7J%  
for (i = l; i <= mid; i++) { "TA0--6  
temp = data; LaQ7A,]  
} =%m{|HQ`  
for (j = 1; j <= r - mid; j++) { J#$U<`j*G  
temp[r - j + 1] = data[j + mid]; ^bv^&V&IB  
} q-`&C  
int a = temp[l]; SZKYq8ZA)V  
int b = temp[r]; ~, }|~  
for (i = l, j = r, k = l; k <= r; k++) { lbAhP+B  
if (a < b) { Fx:38Ae  
data[k] = temp[i++]; >%tG[jb  
a = temp; |SOLC  
} else { }MQ:n8  
data[k] = temp[j--]; e\V -L_  
b = temp[j]; 2Xe1qzvo  
} BH0m[9nU;  
} 76tn`4NIP  
} eUy*0  
&[[r|  
/** Nm"P8/-09  
* @param data NBPP?\1  
* @param l !i"zM}  
* @param i $9`#p/V  
*/ uHKEt[PS$  
private void insertSort(int[] data, int start, int len) { *a Z1 4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 76!LMNf  
} :i<*~0r<  
} JdS,s5Z>  
} R;!,(l  
} !mxH/{+|n  
BEOPZ[Q|c  
堆排序: hWy@?r.  
+cH>'OXoB  
package org.rut.util.algorithm.support; iAz0 A  
>`AK'K8{M  
import org.rut.util.algorithm.SortUtil; N6._J b  
N0p6xg~  
/** a^%)6E.[,  
* @author treeroot p3A9 <g  
* @since 2006-2-2 LFax$CZc  
* @version 1.0 VO0:4{-  
*/ J9[7AiEd(/  
public class HeapSort implements SortUtil.Sort{ ;].X;Ky <  
{5Bj*m5  
/* (non-Javadoc) q}t]lD %C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @:?[R&`  
*/ d^=)n-!T  
public void sort(int[] data) { tu}!:5xi  
MaxHeap h=new MaxHeap(); xE 8?%N U  
h.init(data); *\XOQWrF  
for(int i=0;i h.remove(); I;w!  
System.arraycopy(h.queue,1,data,0,data.length); B $g\;$G  
} -FJ3;fP&  
8m{e,o2.  
private static class MaxHeap{ ;}E}N:A  
NF&Sv  
void init(int[] data){ A`uHZCwJ5  
this.queue=new int[data.length+1]; r &.~ {  
for(int i=0;i queue[++size]=data; JN/=x2n.  
fixUp(size); UfX~GC;B  
} zcP=+Y)YA  
} c]u ieig0~  
UDJjw  
private int size=0; S($/Ov  
%C/p+Tg  
private int[] queue; #%[;v K  
Fl_}Auj{&(  
public int get() { fn,n'E]  
return queue[1]; \x-2qlZ  
} RHFRN&RU$  
H0s*Lb  
public void remove() { %'1iT!g8  
SortUtil.swap(queue,1,size--); KVOV<uDCj  
fixDown(1); m#UQ,EM  
} Pdf-2 Tx  
file://fixdown ~LuGfPO^  
private void fixDown(int k) { 4J5zSTw  
int j; o4" [{LyT  
while ((j = k << 1) <= size) { 1L!;lP2  
if (j < size %26amp;%26amp; queue[j] j++; !MKecRG_  
if (queue[k]>queue[j]) file://不用交换 )J[m>tyY5  
break; Z9DfwWI2nu  
SortUtil.swap(queue,j,k); N)"8CvQL  
k = j; [_JdV(]$  
} vi}16V84l  
} Ca'BE#q  
private void fixUp(int k) { 44 u)F@)  
while (k > 1) { Yk|6?e{+)  
int j = k >> 1; +g g_C'"  
if (queue[j]>queue[k]) !CU-5bpu  
break; D U\ytD`u  
SortUtil.swap(queue,j,k); YIRe__7-NU  
k = j; n}UJ - \$  
} q=W.82.U  
} _p6 r5Y  
5.\p]>|G1  
} mS'Ad<  
fM ID}S  
} zb{79Os[B  
A M[f  
SortUtil: zd[k|lj  
C>Hdp_Lm  
package org.rut.util.algorithm; 2OJlE) .  
v ;\cM/&5  
import org.rut.util.algorithm.support.BubbleSort;  BI?, 3  
import org.rut.util.algorithm.support.HeapSort; 59zWB,y(P  
import org.rut.util.algorithm.support.ImprovedMergeSort; a=}1`Q  
import org.rut.util.algorithm.support.ImprovedQuickSort; uLzE'Z mV  
import org.rut.util.algorithm.support.InsertSort; >UCg3uFj  
import org.rut.util.algorithm.support.MergeSort; TnN yth wZ  
import org.rut.util.algorithm.support.QuickSort; ]R""L<K%HF  
import org.rut.util.algorithm.support.SelectionSort; P*!`AWn  
import org.rut.util.algorithm.support.ShellSort; ^W$R{`  
x6,ozun  
/**  :f[ w  
* @author treeroot |~5cN m  
* @since 2006-2-2 TBt5Nqks-  
* @version 1.0 GM2}]9  
*/ ![%wM Pp  
public class SortUtil { c[ZrQJ  
public final static int INSERT = 1; [e` | <  
public final static int BUBBLE = 2; D \i]gfu8W  
public final static int SELECTION = 3; <q=Zg7zB  
public final static int SHELL = 4; d'96$e o~  
public final static int QUICK = 5; BSMb(EnqX  
public final static int IMPROVED_QUICK = 6; Led\S;pl  
public final static int MERGE = 7; '! ^7 *@z  
public final static int IMPROVED_MERGE = 8; 2L&c91=wE  
public final static int HEAP = 9; lW?}Ts ~'  
q7lC}'2fu  
public static void sort(int[] data) { _G'ki.[S7  
sort(data, IMPROVED_QUICK); 82@^vX  
} ?7Cm+J  
private static String[] name={ >>T7;[h  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" jVnTpa!A  
}; PV#h_X<l%  
B6dU6"  
private static Sort[] impl=new Sort[]{ !-`L1D_hy  
new InsertSort(), %w^*7Oi  
new BubbleSort(), A{s -g>s  
new SelectionSort(), t[TM\j0jW  
new ShellSort(), iQ" LIeD  
new QuickSort(), 3g4=as4w  
new ImprovedQuickSort(), F2 B(PGa7  
new MergeSort(), h |]cZMGo  
new ImprovedMergeSort(), OpaRQ=  
new HeapSort() :j`f%Vg~x  
}; h"ZIh= j@  
`R2Iw I&  
public static String toString(int algorithm){ ?+EAp"{j  
return name[algorithm-1]; UWO3sZpU  
} /V*SI!C<f  
>fYcr#i0[  
public static void sort(int[] data, int algorithm) { (H uvo9  
impl[algorithm-1].sort(data); ]<<,{IQ  
} v'?Smd1v /  
KD A8x W  
public static interface Sort { M ]047W  
public void sort(int[] data); 79;uHR&S  
} fYPu%MN7  
kS_#8 I  
public static void swap(int[] data, int i, int j) { 8$~oiK%fw  
int temp = data; @ovaOX  
data = data[j];  7V5c`:"  
data[j] = temp; eHvUgDt  
} 9xbT?$^  
} xy:Mb =r  
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