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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。 2&<&q J  
插入排序: }pT>dbZ  
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package org.rut.util.algorithm.support; &WVRh=R  
3=^B &AB  
import org.rut.util.algorithm.SortUtil; KC-@2,c9V  
/** K=J">^uW  
* @author treeroot v<]$,V]  
* @since 2006-2-2 \r\wqz7  
* @version 1.0 8ao>]5Rs3  
*/ ue!wo-|#G  
public class InsertSort implements SortUtil.Sort{ -lI6!a^  
2TX.%%Ze  
/* (non-Javadoc) F#l!LER^1g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R lmeZy4.  
*/ ^cI RP  
public void sort(int[] data) { l]geQl:7`r  
int temp; e:iqv?2t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (=QiXX1r  
} iaQ3mk#  
} {pk&dB _Bu  
} m)xz_Plc  
udX!R^8jE  
} PA${<wyBR_  
qyY]: (8  
冒泡排序: ,) 3Eog\-  
e\H1IR3  
package org.rut.util.algorithm.support; qf B!)Y  
]iH~ 1[  
import org.rut.util.algorithm.SortUtil; x@,B))WlGr  
.OvH<%g!.  
/** NAEAvXj  
* @author treeroot ?lQ-HOAw  
* @since 2006-2-2 bBXUD;$  
* @version 1.0 2@$`xPg  
*/ r[kmgPld  
public class BubbleSort implements SortUtil.Sort{ 3rVWehCv  
_{0IX  
/* (non-Javadoc) <FU1|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Gq;!g(  
*/ t p3 !6I6  
public void sort(int[] data) { Z oQPvs7_  
int temp; G:!'hadw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ :LX (9f   
if(data[j] SortUtil.swap(data,j,j-1); [|oOP$u  
} JCZ5q9b  
} kk7M$)>d  
} E'F87P^>  
} HmVpxD+  
5?C) v}w+  
} P#ot$@1v  
sn:wLc/GAd  
选择排序: 2vX!j!_  
|C.[eHe&D  
package org.rut.util.algorithm.support; APL #-`XC  
TWo.c _l  
import org.rut.util.algorithm.SortUtil; @hIHvLpRB  
\kVi&X=q:  
/** R\n*O@E v3  
* @author treeroot > R2o7~  
* @since 2006-2-2 gjex;h  
* @version 1.0 1A;f[Rze  
*/ cR/z;*wr7  
public class SelectionSort implements SortUtil.Sort { OE_A$8L  
];au! _o  
/* ?<eH!MHF  
* (non-Javadoc) * odwg$  
* kU[#. y=%p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ? EXYLG  
*/ QB#rf='  
public void sort(int[] data) {  e6hfgVN  
int temp; jij-pDQnv  
for (int i = 0; i < data.length; i++) { C(lGW,!  
int lowIndex = i; "}jv5j5  
for (int j = data.length - 1; j > i; j--) { lc\f6J>HT  
if (data[j] < data[lowIndex]) { nM6/c  
lowIndex = j; ;\)N7SJ  
} )E (9 R(  
} WeRX~  
SortUtil.swap(data,i,lowIndex); #tQ__ V   
} `{W>Dy  
} G}p* oz~  
Q a8;MxK`  
} Dro2R_j{  
b;Uqyc  
Shell排序: +C ){&/=#  
u(Y?2R  
package org.rut.util.algorithm.support; 8+OcM ;0  
''~#tK f  
import org.rut.util.algorithm.SortUtil; L&h90Az1W  
/yO|Q{C}M8  
/** \N"=qw^ t  
* @author treeroot FW--|X]8   
* @since 2006-2-2 qQx5n  
* @version 1.0 :x/L.Bz  
*/ n6s[q- td  
public class ShellSort implements SortUtil.Sort{ x*2I]4  
k1Thjt  
/* (non-Javadoc) g|PRk9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x^P~+(g  
*/ >'96SE3  
public void sort(int[] data) { X*Cvh|  
for(int i=data.length/2;i>2;i/=2){ R`!'c(V  
for(int j=0;j insertSort(data,j,i); ]J>{ZL   
} `u7"s'  
} iP^o]4[c  
insertSort(data,0,1); "Zq)y_1  
} S67>yqha  
@Zov&01  
/** -iJ @K  
* @param data ,CA3Q.y>|  
* @param j ]\Q9j7}37+  
* @param i %+e% RZ3  
*/ Or*e$uMIY  
private void insertSort(int[] data, int start, int inc) { P{_Xg,Z  
int temp; H_<hZ UB  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); QvjOOc@k~n  
} /$,~|X;&  
} EoD[,:*  
} Ec;{N  
ZVX!=3VT  
} 5zR9N>!c  
dE0 p>4F  
快速排序: Vv3{jn6%  
+U];  
package org.rut.util.algorithm.support; 9 9S-P}xd  
VwxLElV  
import org.rut.util.algorithm.SortUtil; ?ta(`+"  
ej9|Y5D"S  
/** X9oxni#  
* @author treeroot {X'D07q  
* @since 2006-2-2 3ZEV*=+T5  
* @version 1.0 I!OV+utF  
*/ OD\F*Ry~  
public class QuickSort implements SortUtil.Sort{ SByn u  
xU_Dg56z'&  
/* (non-Javadoc) 3iC$ "9!p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $X%'je  
*/ i`)h~V|G  
public void sort(int[] data) { ~i ImM|*0  
quickSort(data,0,data.length-1); r^,XpRe&M  
} ,Kw]V %xOb  
private void quickSort(int[] data,int i,int j){ B qA  
int pivotIndex=(i+j)/2; E |BE(F;K  
file://swap {D9m>B3"{  
SortUtil.swap(data,pivotIndex,j); C/L+gU&  
BQTibd  
int k=partition(data,i-1,j,data[j]); w;Jby  
SortUtil.swap(data,k,j); ;)nV  
if((k-i)>1) quickSort(data,i,k-1); ~xSAR;8  
if((j-k)>1) quickSort(data,k+1,j); ollk {N  
sq~9 l|F  
} A:-r 2;xB  
/** quEP"  
* @param data G^Q8B^Lg  
* @param i C_~hX G  
* @param j 8Q2qroT  
* @return ':jsCeSB  
*/ @CJ`T&  
private int partition(int[] data, int l, int r,int pivot) {  edv&!  
do{ V`/D!8>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); FhkS"y  
SortUtil.swap(data,l,r); 2y0J~P!I  
} ,m)k;co^  
while(l SortUtil.swap(data,l,r); !QTfQ69Y0  
return l; ;@R=CQ6  
} =T0;F0@#4  
] s))O6^f  
} l,n V*Z  
bXw!fYm&  
改进后的快速排序: [~[)C]-=  
RZg8y+jM  
package org.rut.util.algorithm.support; 5!pof\/a  
$V0G[!4  
import org.rut.util.algorithm.SortUtil; Bl"BmUn  
=K ctAR;  
/** 5RysN=czA  
* @author treeroot <@puWm[p  
* @since 2006-2-2 >m-VBo  
* @version 1.0 {hmC=j  
*/ [_pw|BGp  
public class ImprovedQuickSort implements SortUtil.Sort { L~u@n24  
L~PBD?l  
private static int MAX_STACK_SIZE=4096; j~Cch%%G  
private static int THRESHOLD=10; <HC5YA)4  
/* (non-Javadoc) w#!^wN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zc n/LF  
*/ 1"4Pan  
public void sort(int[] data) { -J<{NF  
int[] stack=new int[MAX_STACK_SIZE]; ev}ugRxt|k  
&eqeQD6  
int top=-1; *49lM;  
int pivot; vTdJe  
int pivotIndex,l,r; hN3*]s;/6z  
X' ,0vK  
stack[++top]=0; e2 X\ll  
stack[++top]=data.length-1; CC8)yO  
g]V_)}  
while(top>0){ m@Vz42g~+  
int j=stack[top--]; @*VfG CQ(  
int i=stack[top--]; ;;#_[Zl  
nH=8I~jp  
pivotIndex=(i+j)/2; @g{FNXY$m  
pivot=data[pivotIndex]; 3iI 4yg  
Q2L>P<87T  
SortUtil.swap(data,pivotIndex,j); EL?6x  
qZS]eQW.  
file://partition @3Lh/&  
l=i-1; Duu)8ru  
r=j; &P@dx=6d  
do{ eq!>~: #  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >$RQ  
SortUtil.swap(data,l,r); Pd"=&Az|  
} z3bRV{{YqN  
while(l SortUtil.swap(data,l,r); nN]GO}  
SortUtil.swap(data,l,j); 1j!LK-  
w I7iE4\vz  
if((l-i)>THRESHOLD){ 1_of;=9V  
stack[++top]=i; ;tZ;C(;<  
stack[++top]=l-1; k"z ~>  
} s)L\D$;+O  
if((j-l)>THRESHOLD){ t{ R\\j  
stack[++top]=l+1; <U]!1  
stack[++top]=j; qq,#bRe  
} 5!b+^UR;z  
$Sx(vq6(  
} /~O>He  
file://new InsertSort().sort(data); j^V r!y  
insertSort(data); @X?7a]+;8  
} OABMIgX  
/** UK7pQt}9  
* @param data p" ;5J+?(  
*/ 'BiR ,M$mY  
private void insertSort(int[] data) { =Lc!L !(,b  
int temp; Hrk]6*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); z[0+9=<Y  
} b5@sG^  
} sYG:\>}ie  
} )9]DJ!]&Q"  
.S{FEV  
} QCD MRh n  
J_|LG rt})  
归并排序: F+m%PVW:  
2YbI."ob  
package org.rut.util.algorithm.support; D"z3SLFW{  
"?X,);5S  
import org.rut.util.algorithm.SortUtil; A5\00O~  
X9-WU\?UC  
/** nqFJNK]a  
* @author treeroot ){I0  
* @since 2006-2-2 7'~O ai~r  
* @version 1.0 ;J>upI   
*/ -91*VBrOd  
public class MergeSort implements SortUtil.Sort{ yd|roG/  
IW{}l=D/  
/* (non-Javadoc) d$H   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a7fFp 9l!  
*/ 44x+2@&1  
public void sort(int[] data) { 6L!/#d0  
int[] temp=new int[data.length]; \2c 3Nsra  
mergeSort(data,temp,0,data.length-1); a$AR  
} ++=f7y u  
vmj'X>Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ li37*  
int mid=(l+r)/2; [pRRBMho  
if(l==r) return ; 1`Ig A0V`"  
mergeSort(data,temp,l,mid); iCtDV5  
mergeSort(data,temp,mid+1,r); 0R-J \  
for(int i=l;i<=r;i++){ Ym8 V)  
temp=data; $A;%p6PO)  
} F%tV^$%  
int i1=l; )yt_i'D}  
int i2=mid+1; (Qcd !!   
for(int cur=l;cur<=r;cur++){ # E{2 !Z  
if(i1==mid+1) yp!7^  
data[cur]=temp[i2++]; A/c#2  
else if(i2>r) )Ggv_mc h  
data[cur]=temp[i1++]; Pxvf"SXX  
else if(temp[i1] data[cur]=temp[i1++]; ZamOYkRX  
else N;q)r  
data[cur]=temp[i2++]; B{lj.S` mB  
}  Iysp)  
} c<a)Yqf"]  
`6:B0-r  
} {zTnE?(o`  
z}a9%Fb  
改进后的归并排序: fjd)/Gg  
}ip3dm  
package org.rut.util.algorithm.support; 0g`$Dap  
p>l:^ -N;f  
import org.rut.util.algorithm.SortUtil; i,B<k 0W9  
:Dj0W8V  
/** S?[@/35)  
* @author treeroot 7C9_;81_Dt  
* @since 2006-2-2 @Cml^v@`L  
* @version 1.0 L"tzUYxg  
*/ zMXQfR   
public class ImprovedMergeSort implements SortUtil.Sort { |[Rlg`TQ;*  
SaIY-PC  
private static final int THRESHOLD = 10; |E9'ii&?B  
^)UX#D3b  
/* 6Vj=SYK  
* (non-Javadoc) @GWJq 3e  
* g.*DlD%%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M5kw3Jy5  
*/ CUN1.i<pk8  
public void sort(int[] data) { .]e_je_  
int[] temp=new int[data.length]; )`BKEa f  
mergeSort(data,temp,0,data.length-1); p/U{*i ]t  
} ~Z~V:~  
4D}hYk$eP0  
private void mergeSort(int[] data, int[] temp, int l, int r) { f#kT?!sP  
int i, j, k; !<3!ORFO  
int mid = (l + r) / 2; 0Lf4 ^9N  
if (l == r) Am!OLGG4  
return; U38~m}c  
if ((mid - l) >= THRESHOLD)  :Y Ki  
mergeSort(data, temp, l, mid); +# 3e<+!F  
else '.wb= C  
insertSort(data, l, mid - l + 1); q-s(2C  
if ((r - mid) > THRESHOLD) `=$p!H8  
mergeSort(data, temp, mid + 1, r); i IM\_<?  
else ek"U q RY  
insertSort(data, mid + 1, r - mid); L|L;<  
aka)#0l .  
for (i = l; i <= mid; i++) { h343$,))u  
temp = data; 2FcNzAaV  
} brX[-  
for (j = 1; j <= r - mid; j++) { 5ZX  
temp[r - j + 1] = data[j + mid]; +BVY9U?\"  
} E/zclD5S  
int a = temp[l]; 6f:uAFwG  
int b = temp[r]; );zLgNx,  
for (i = l, j = r, k = l; k <= r; k++) { \10KIAQ  
if (a < b) { Z(XohWe2  
data[k] = temp[i++]; 3 "iBcsLn  
a = temp; "AP$)xM-:  
} else { )Dp0swJ  
data[k] = temp[j--]; ^I KT!"J&?  
b = temp[j]; edo+ o{^  
} nMK$&h,{  
} k1.%ZZMM  
} Z2t\4|wr:  
f`)*bx  
/** #W&o]FAA3y  
* @param data O7CW#F  
* @param l *M)M!jTv  
* @param i }K5okxio  
*/ 6e8 gFQ"w2  
private void insertSort(int[] data, int start, int len) { .DI?-=p|_#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); osl\j]U8  
} 2qot(Zs1i  
} K3Bw3j 9  
} d%UzQ*s  
} Bf.iRh0Q5  
"BVp37 m;?  
堆排序: ve+bR   
r1TdjnP,2^  
package org.rut.util.algorithm.support; H,c`=Ii3  
mPhu#oK'f  
import org.rut.util.algorithm.SortUtil;  o*Xfgc  
9Z21|5  
/** JA*+F1s  
* @author treeroot 0'HQ=pP  
* @since 2006-2-2 ah%Ws#&  
* @version 1.0 <DP8a<{{  
*/ $ x:N/mMu`  
public class HeapSort implements SortUtil.Sort{ QWnGolN  
)Gm9x]SVl  
/* (non-Javadoc) 19U&4Jk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i)'tt9f$  
*/ ;?k<L\zaw  
public void sort(int[] data) { e=l:!E10  
MaxHeap h=new MaxHeap(); 'zbvg0T  
h.init(data); BN `2UVH  
for(int i=0;i h.remove(); ;*$e8y2  
System.arraycopy(h.queue,1,data,0,data.length); Jt[,V*:#  
} LRg]'?  
v3aPHf  
private static class MaxHeap{  DR{O.TX  
3@qv[yOE  
void init(int[] data){ op\$(7<d-  
this.queue=new int[data.length+1]; qY$ [2]  
for(int i=0;i queue[++size]=data; NYr)=&)Ke.  
fixUp(size); *FktI\tS  
} EK5$z>k>m  
} 0>8w On  
B;?)X&n|X  
private int size=0; /y$Fw9R;  
b*.aaOb  
private int[] queue; 6UqAs<c9  
vJaWHC$q  
public int get() { h=0a9vIXF  
return queue[1]; P%)r4+at  
} 6Iqy"MQuq  
pr,,E[  
public void remove() { )A xD|A  
SortUtil.swap(queue,1,size--); I/XSW#  
fixDown(1); @ ?M\[qeF@  
} Q#G xo  
file://fixdown 'Y#'ozSQv  
private void fixDown(int k) { m$_b\^we  
int j; J_ h.7V  
while ((j = k << 1) <= size) { ol*,&C:{  
if (j < size %26amp;%26amp; queue[j] j++; D;NL*4zt  
if (queue[k]>queue[j]) file://不用交换 F3EAjO)ch  
break; Uns%6o  
SortUtil.swap(queue,j,k); j<P;:  
k = j; e.skE>&  
} |$b8(g$s)  
} y]0O"X-G  
private void fixUp(int k) { x};~8lGT>t  
while (k > 1) { 4"k&9+>  
int j = k >> 1; ~f(5l.  
if (queue[j]>queue[k]) /wLGf]0  
break; 4U\}"Mk  
SortUtil.swap(queue,j,k);  =aZ d>{Y  
k = j; @ <{%r  
} B=r DU$z  
} ^hiY6N &  
Jz~:  
} !9WGZfK+0Y  
gK QJ^a\!  
} >]pZ;e$  
|67Jw2  
SortUtil: mLqqo2u  
zQ |2D*W  
package org.rut.util.algorithm; [9${4=Kq  
J?w_DQa  
import org.rut.util.algorithm.support.BubbleSort; XZ~kXE;B(  
import org.rut.util.algorithm.support.HeapSort; .Pponmy  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ba@~:  
import org.rut.util.algorithm.support.ImprovedQuickSort; UuWIT3W>%  
import org.rut.util.algorithm.support.InsertSort;  ce9P-}d  
import org.rut.util.algorithm.support.MergeSort; xy7A^7Li  
import org.rut.util.algorithm.support.QuickSort; *: @KpYWx"  
import org.rut.util.algorithm.support.SelectionSort; n82tZpn  
import org.rut.util.algorithm.support.ShellSort; a8J AJkFB  
2+rT .GFc  
/** }[;ZZm?  
* @author treeroot ?E"192 ,z@  
* @since 2006-2-2 D[/fs`XES  
* @version 1.0 ?@9v+Am!  
*/ 6X*vCylI  
public class SortUtil { Ku l<Q<  
public final static int INSERT = 1; 3e&+[j  
public final static int BUBBLE = 2; <rj'xv  
public final static int SELECTION = 3; 7DJEx~"!2-  
public final static int SHELL = 4; 5[Vr {^)  
public final static int QUICK = 5; SK\@w9#&$  
public final static int IMPROVED_QUICK = 6; @  W>@6E  
public final static int MERGE = 7; =|]h-[P'  
public final static int IMPROVED_MERGE = 8; 5[jcw`  
public final static int HEAP = 9; %-blx)Pc  
N:)x67,  
public static void sort(int[] data) { EL$DvJ~  
sort(data, IMPROVED_QUICK); <#h,_WP*  
} z3uR1vF'  
private static String[] name={ S-S%IdL  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" C P}fxDW  
}; A7Ql%$v7^  
ICN>kJ\;M  
private static Sort[] impl=new Sort[]{ q*UHzE:LI  
new InsertSort(), bW6| &P}X  
new BubbleSort(), zsXgpnlHT  
new SelectionSort(), Pp-N2t86#2  
new ShellSort(), *~)6 sm  
new QuickSort(), T;92M}\  
new ImprovedQuickSort(), uaF-3  
new MergeSort(), oZiW4z*Wh  
new ImprovedMergeSort(), v1,#7s AW'  
new HeapSort() PaI\y! f  
}; TRGpE9i  
H54RA6$>  
public static String toString(int algorithm){ x#EE_i/W  
return name[algorithm-1]; KSPa2>lz?  
} gB'ajX=OA/  
y''~j<'  
public static void sort(int[] data, int algorithm) { a yA;6Qt  
impl[algorithm-1].sort(data); 5v)^4( )  
} ,%TBW,>  
B?z2@,  
public static interface Sort { e"t0 rScA  
public void sort(int[] data); $Q/@5f'T`9  
} HDH G~<s  
B-MS@ <2  
public static void swap(int[] data, int i, int j) { ,a{85HLr]  
int temp = data; rkjnw@x\  
data = data[j]; Wk0E7Pr  
data[j] = temp; !i;6!w  
} tn5%zJ#+  
} $xWwI( SaB  
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