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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。 G=/a>{  
插入排序: G?CaCleG  
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package org.rut.util.algorithm.support; Yb\t0:_  
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import org.rut.util.algorithm.SortUtil; htX;"R&  
/** DW&%"$2  
* @author treeroot CRf!tsj@  
* @since 2006-2-2 F]DRT6)  
* @version 1.0 W~(@*H  
*/ 7Vd"k;:X  
public class InsertSort implements SortUtil.Sort{ Rd@34"O  
kIhP 73M  
/* (non-Javadoc) GOuBNaU {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U>?q|(u  
*/ }kzGuNj  
public void sort(int[] data) { s S(t }$  
int temp; EITA[Ba B`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); L)W1bW}  
} /|V!2dQs"  
} (|+Sbq(o  
} huFT_z_;;  
(T:OZmEO.  
} jA_w OR7$  
!D6   
冒泡排序: / RU'~(  
qpzzk9ba[  
package org.rut.util.algorithm.support; GSo&$T;B6  
"} =RPc%9  
import org.rut.util.algorithm.SortUtil; 2u9O+]EP  
l?Vm/YXb  
/** ap;?[B~Ga  
* @author treeroot n+ 1!/H=d  
* @since 2006-2-2 HYm |  
* @version 1.0 [mwJ*GJ-  
*/ 81Ixs Qt  
public class BubbleSort implements SortUtil.Sort{ 3SI:su  
jej|B#?`  
/* (non-Javadoc) h!.#r*vV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) u"eO&Vc  
*/ 8w1TX [b  
public void sort(int[] data) { pa4,W!t  
int temp; [P~6O>a5p  
for(int i=0;i for(int j=data.length-1;j>i;j--){ qYo"-D*  
if(data[j] SortUtil.swap(data,j,j-1);  mG4$  
} -(*<2Hy4  
} eS)2#=  
} {p3VHd#  
} /]7FX"  
CR8a)X4j#  
} Z3jh-{0  
}*eiG  
选择排序: |m{Q_zAB  
8 Z|c!QIU  
package org.rut.util.algorithm.support; 4#hDt^N~  
_ nFsC  
import org.rut.util.algorithm.SortUtil; \i1>/`F  
b^ wWg  
/** Zx$q,Zo<  
* @author treeroot Gt;@. jY&  
* @since 2006-2-2 E.~;  
* @version 1.0 ,K4*0!TXP  
*/ `"~s<+  
public class SelectionSort implements SortUtil.Sort { Xc)V;1  
A8Z2o\+  
/* 4cZig\mE;  
* (non-Javadoc) w1Ar[ P  
* fDe4 [QQ8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P(iZGOKUs=  
*/ >6 p <n  
public void sort(int[] data) { ~9#x/EG/  
int temp; )gM3,gSS  
for (int i = 0; i < data.length; i++) { "s[Y$!#  
int lowIndex = i; ! C}t)R]^  
for (int j = data.length - 1; j > i; j--) { ^Ej4^d  
if (data[j] < data[lowIndex]) { ?naPti1GX  
lowIndex = j; ]LGp3)T-  
} 85;hs  
} Q I!c=:u  
SortUtil.swap(data,i,lowIndex); -anLp8G*  
} 'p0|wM_  
}  3Ee8_(E\  
}m '= _u  
} oh%kuO T[  
1X-KuGaD  
Shell排序: }mGOEG|F2  
X`xI~&t_  
package org.rut.util.algorithm.support; MYVUOd,  
r]!<iw  
import org.rut.util.algorithm.SortUtil; do3 BI4Q  
[h"#Gwb=;  
/** ;=rMIi  
* @author treeroot HbQvu@  
* @since 2006-2-2 "v.]s;g  
* @version 1.0 P<+y%g(({  
*/ {sn:Lj0  
public class ShellSort implements SortUtil.Sort{ Znl&.,c)  
X`,4pSQ;  
/* (non-Javadoc) 5Gj?'Wov9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rg:3}T`~n  
*/ }h+_kRQ  
public void sort(int[] data) { TWv${m zE  
for(int i=data.length/2;i>2;i/=2){ g4n& k  
for(int j=0;j insertSort(data,j,i); p)  x.Y  
} b0\'JZ  
} sy^k:y?  
insertSort(data,0,1); 8mjP2  
} `i{k^Q  
TmN}TMhZ  
/** IKJ~sw~AQ  
* @param data fVR:m`'Iq_  
* @param j @G/':N   
* @param i kBPFk t2  
*/ m7:E7 3:  
private void insertSort(int[] data, int start, int inc) { 'WqSHb7  
int temp; !*46@sb:  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >.R6\>N%  
} S6sSdo'  
} 4fDo}~  
} 2>{_O?UN  
X,- ' v[z  
} q.(p.uD  
NJYx.TL  
快速排序: uO$ujbWZ  
#unE>#DW  
package org.rut.util.algorithm.support; {$iJYS\  
(xU+Y1*g"%  
import org.rut.util.algorithm.SortUtil; k&nhF9Y4  
N0s)Nao4  
/** (vIrXF5Dnj  
* @author treeroot &`rV{%N"  
* @since 2006-2-2 nsyg>=j  
* @version 1.0 v{rc5 ]\R  
*/ h.)2,  
public class QuickSort implements SortUtil.Sort{ CvpqQ7&k7  
[7Nn%eZC  
/* (non-Javadoc) W7N Hr5RC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F"a^`E&  
*/ b("JgE`  
public void sort(int[] data) { }@'xEx  
quickSort(data,0,data.length-1); -X@;"0v  
} /p,D01Ws}(  
private void quickSort(int[] data,int i,int j){ [5%/{W,~m  
int pivotIndex=(i+j)/2; hp(n;(OR  
file://swap <!,q:[ee5  
SortUtil.swap(data,pivotIndex,j); VmQ7M4j*  
#SY8Zv  
int k=partition(data,i-1,j,data[j]); f{e*R#+&  
SortUtil.swap(data,k,j); 7YbI|~  
if((k-i)>1) quickSort(data,i,k-1); ~H0~5v F  
if((j-k)>1) quickSort(data,k+1,j); < /y V  
aMTY{  
} ]P0DPea  
/** <.3@-z>w2,  
* @param data tC+9W1o  
* @param i gB 3&AQ  
* @param j -<#n7b  
* @return [Hdk=p  
*/ K. G#[  
private int partition(int[] data, int l, int r,int pivot) { U]sU b3  
do{ (2@b ,w^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); -b@E@uAX /  
SortUtil.swap(data,l,r); ;hs:wLVa"  
} Rn{q/h  
while(l SortUtil.swap(data,l,r); 2h&pm   
return l; 7>{edNy!,  
} #},]`"n\  
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} K! /E0G&  
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改进后的快速排序: 9szE^kHS9  
HqgTu`  
package org.rut.util.algorithm.support; nGW wXySq  
p!'wOThO`  
import org.rut.util.algorithm.SortUtil; z@y* jT  
]_BG"IR!..  
/** "EpE!jh  
* @author treeroot y<F$@  
* @since 2006-2-2 `Uk,5F5   
* @version 1.0 z!Kadqns  
*/ hl~(&D1^  
public class ImprovedQuickSort implements SortUtil.Sort { 5d}PrYa  
"4"\tM(  
private static int MAX_STACK_SIZE=4096;  CjQ_oNI  
private static int THRESHOLD=10; +:&(Ag  
/* (non-Javadoc) NtTLvO6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =mqV&FgRo  
*/ J=K3S9:n]g  
public void sort(int[] data) { z,rWj][P  
int[] stack=new int[MAX_STACK_SIZE]; Cw{#(xX  
#`"'  
int top=-1; 81W})q8  
int pivot; 4BEVG&Ks  
int pivotIndex,l,r; y8+?:=N.  
lRt8{GFy  
stack[++top]=0; 4)j<(5  
stack[++top]=data.length-1; kq%`9,XE  
6}NvVolr  
while(top>0){ GWE`'V  
int j=stack[top--]; hQGZrZK#  
int i=stack[top--]; [9?= &O#*  
{OAy@6 +  
pivotIndex=(i+j)/2; <i`EP/x  
pivot=data[pivotIndex]; bf;IJ|v^  
nBiSc*  
SortUtil.swap(data,pivotIndex,j); kj0A%q#'}  
3SIB #"9  
file://partition `MTOe 1  
l=i-1; 9:~,TH  
r=j; n; rOH[P  
do{ ; wHuL\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); RM<\bZPc  
SortUtil.swap(data,l,r); La9@h"  
} 3al5Vu2:  
while(l SortUtil.swap(data,l,r); *fd` .}  
SortUtil.swap(data,l,j); E"G. _<3J8  
?tA- `\E  
if((l-i)>THRESHOLD){ Y"l!3^   
stack[++top]=i; rkD4}jV  
stack[++top]=l-1; >a4Bfnf"eI  
} %!.rP  
if((j-l)>THRESHOLD){ 4|+ |L_  
stack[++top]=l+1; {Zseu$c  
stack[++top]=j; ,}2j Fb9z4  
} ;%k%AXw  
t#pY2!/T3  
} 8dZH&G@;  
file://new InsertSort().sort(data);  zIAMM  
insertSort(data); 15eHddd  
} rLKDeB  
/** WG}QLcP  
* @param data (u'/tNGS  
*/ s+CXKb +  
private void insertSort(int[] data) { 8c/Ii"1  
int temp; 8 Zj>|u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 73<iK]*c  
} ',&MYm\  
} !<X_XA  
} ?,8b-U#A1  
.A `:o  
} blPC"3}3Vd  
x4( fW\  
归并排序: & {/ u>,  
<%Rr-,  
package org.rut.util.algorithm.support; Fh/C{cX9g  
=H?Nb:s  
import org.rut.util.algorithm.SortUtil; 9E#(iP  
oaXD^ H\  
/** +es6c')  
* @author treeroot %4-pw|':  
* @since 2006-2-2 L%8"d6  
* @version 1.0 plIx""a^h  
*/ P<(mH=K  
public class MergeSort implements SortUtil.Sort{ QA9vH'  
!*ucVv;  
/* (non-Javadoc) )I$Mh@F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O0l;Qi  
*/ ixH7oWH#  
public void sort(int[] data) { c]&VUWQ  
int[] temp=new int[data.length]; W2B=%`sC  
mergeSort(data,temp,0,data.length-1); *Xnq1_K}  
} f 0#V^[%Q  
^R$dG[Qf  
private void mergeSort(int[] data,int[] temp,int l,int r){ j,-7J*A~  
int mid=(l+r)/2; F>Oh)VL,Ev  
if(l==r) return ; 1&As:kv5I  
mergeSort(data,temp,l,mid); OlJj|?z $  
mergeSort(data,temp,mid+1,r); ]a%Kn]HI&2  
for(int i=l;i<=r;i++){ N~kYT\$b#  
temp=data; P3|<K-dFAK  
} ujh4cp  
int i1=l; &tOD  
int i2=mid+1; ;(,Fe/wvC  
for(int cur=l;cur<=r;cur++){ a RwBxf  
if(i1==mid+1) 'ng/A4  
data[cur]=temp[i2++]; }<S2W\,G  
else if(i2>r) #lC{R^SL  
data[cur]=temp[i1++]; -XyuA:pxx  
else if(temp[i1] data[cur]=temp[i1++]; H}~^,B2;  
else .KSGma6]  
data[cur]=temp[i2++]; < KA@A}  
} /W>"G1)  
} ZM.g +-9  
6;*(6$;  
} {cI<4><  
Ye6O!,R  
改进后的归并排序: *~L]n4-  
y_&XF>k91  
package org.rut.util.algorithm.support; X9j+$X \j  
=R"tnjR  
import org.rut.util.algorithm.SortUtil; $gTPW,~s[  
5S? yj  
/** 463dLEd  
* @author treeroot }{y$$X<:  
* @since 2006-2-2 BSf"'0I&  
* @version 1.0 [ub\DLl  
*/ \nWpV7TSN  
public class ImprovedMergeSort implements SortUtil.Sort { (jG$M=q-  
J_@4J7  
private static final int THRESHOLD = 10; M2S|$6t:  
GZt] 38V)g  
/* Jx<  
* (non-Javadoc) -tdG} Gu  
* )]R?v,9*D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tK H!xit  
*/ 6KG63`aQ  
public void sort(int[] data) { WGx>{'LJ  
int[] temp=new int[data.length]; y|se^dn  
mergeSort(data,temp,0,data.length-1); Hdx|k=-Q^  
} (ce NVo&  
NZ5~\k  
private void mergeSort(int[] data, int[] temp, int l, int r) { nE;gM1I  
int i, j, k; sCl,]g0{  
int mid = (l + r) / 2; IycxRig  
if (l == r) QR'g*Bro  
return; kDh(~nfj  
if ((mid - l) >= THRESHOLD) bYc qscW  
mergeSort(data, temp, l, mid); HWBom8u0  
else O2dgdtm  
insertSort(data, l, mid - l + 1); B vc=gW  
if ((r - mid) > THRESHOLD) 6%#'X  
mergeSort(data, temp, mid + 1, r); tV9C33  
else a)Ek~{9  
insertSort(data, mid + 1, r - mid); B;r$( 'UZ  
yFo5pKF.J  
for (i = l; i <= mid; i++) { eHe /w9`$R  
temp = data; `qz5rPyZ  
} {eEWfMKIn  
for (j = 1; j <= r - mid; j++) { GcCs}(eo  
temp[r - j + 1] = data[j + mid]; _'U?!  
} xk8p,>/  
int a = temp[l]; dCTpO  
int b = temp[r]; P0z{R[KBH  
for (i = l, j = r, k = l; k <= r; k++) { =[+&({  
if (a < b) { 5#\p>}[HG  
data[k] = temp[i++]; u_8 22Z  
a = temp; NG UGN~p  
} else { {B.]w9  
data[k] = temp[j--]; y3]"H(  
b = temp[j]; %ko 8P  
} mU$7_7V~  
} vKC&Qi ;  
} HPKyAcS\  
vq7%SEkES  
/** v6\2m c.  
* @param data 3+5\xRq  
* @param l i%8&g2  
* @param i J*X.0&Toc  
*/ J9.p8A^^2  
private void insertSort(int[] data, int start, int len) { E(_I3mftm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); nk 9 K\I  
} reJ?38(  
} m0\}Cc  
} vP NZFi-(  
} =Gz>ZWF  
,{*fOpn  
堆排序: QvN <uxm  
KB*=a   
package org.rut.util.algorithm.support; 7=A9E]:  
{Y%=/ba W  
import org.rut.util.algorithm.SortUtil; F|`B2Gr  
[#'_@zZz  
/** Qmx~_  
* @author treeroot >%dAqYi $  
* @since 2006-2-2 i bs "Iv34  
* @version 1.0 no6]{qn=6  
*/ rxp9B>~  
public class HeapSort implements SortUtil.Sort{ 1/+r?F 3  
1>x@1Mo+K  
/* (non-Javadoc) Vzvw/17J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g*r;( H>e  
*/ B^~Bv!tHWr  
public void sort(int[] data) { _hL4@ C  
MaxHeap h=new MaxHeap(); gr{Sh`Cm-  
h.init(data); 3|r!*+.  
for(int i=0;i h.remove(); p Y>-N  
System.arraycopy(h.queue,1,data,0,data.length); G0Tc}_o<Y  
} V9+"CB^  
Sc 3M#qm_  
private static class MaxHeap{ E(+wl  
,<r3Z$G  
void init(int[] data){ "sX?wTag  
this.queue=new int[data.length+1]; SJ7=<y}[d  
for(int i=0;i queue[++size]=data; <?Izfl6  
fixUp(size); ~<[5uZIo  
} KqUSTR1e[  
} @/NZ>.  
i=H>D  
private int size=0; H6S vU  
gs8@b5 RSb  
private int[] queue; 9Sl|l.;!  
XfK.Fj~-  
public int get() { `oRs-,d|<  
return queue[1]; 8yz((?LrDh  
} &|"I0|tJ  
'!h0![OH  
public void remove() { (DP9& b  
SortUtil.swap(queue,1,size--); MGyB8(  
fixDown(1); KXA)i5z  
} l@/kPEh  
file://fixdown aC Lg~g4  
private void fixDown(int k) { 7oLf5V1~  
int j; }\L !;6oy  
while ((j = k << 1) <= size) { yxWMatZ2  
if (j < size %26amp;%26amp; queue[j] j++; =,8Eo"~\  
if (queue[k]>queue[j]) file://不用交换 b<V./rWIB  
break; nEcd+7(  
SortUtil.swap(queue,j,k); 7RC096 ?}  
k = j; Il`k]XM  
} "mK i$FV  
} o``>sBZOq  
private void fixUp(int k) { /A))"D  
while (k > 1) { >AX~c jo  
int j = k >> 1; ;(0$~O$3u  
if (queue[j]>queue[k]) AD%D ,l  
break; Dzjt|U0ru9  
SortUtil.swap(queue,j,k); \j})Kul  
k = j; bd P,Zqd  
} {!eANm'  
} X<}o> 6|d  
agU!D[M_G  
} :8-gm"awL5  
XL/o y'_  
} rbuL@= S@*  
j484b2uj1  
SortUtil: bb/?02*)H  
grxl{uIC8  
package org.rut.util.algorithm; l8AEEG8>  
ZIL| .<8I  
import org.rut.util.algorithm.support.BubbleSort; n$|c{2]=  
import org.rut.util.algorithm.support.HeapSort; zvb} p  
import org.rut.util.algorithm.support.ImprovedMergeSort; 9C)3 b3  
import org.rut.util.algorithm.support.ImprovedQuickSort; /b:t;0G  
import org.rut.util.algorithm.support.InsertSort; i Kk"j   
import org.rut.util.algorithm.support.MergeSort; +=~%S)9F  
import org.rut.util.algorithm.support.QuickSort; O:^LQ  
import org.rut.util.algorithm.support.SelectionSort; zPh\3B  
import org.rut.util.algorithm.support.ShellSort; 5H :~6z  
X*9N[#wu6  
/** } wOpPN[4  
* @author treeroot :{ WrS  
* @since 2006-2-2 'bI~61{A  
* @version 1.0 } B9~X  
*/ P&%eIgAOL  
public class SortUtil { " $IXZ  
public final static int INSERT = 1; =i^<a7M~  
public final static int BUBBLE = 2; 4,F3@m:<  
public final static int SELECTION = 3; 9kX=99kf[  
public final static int SHELL = 4; D@\;@( |  
public final static int QUICK = 5; H9san5{  
public final static int IMPROVED_QUICK = 6; |!?WQ[  
public final static int MERGE = 7; "ryk\}*<  
public final static int IMPROVED_MERGE = 8; ^L-w(r62<  
public final static int HEAP = 9; k8 ;uC~L  
;64mf`  
public static void sort(int[] data) { 4]aiT8))  
sort(data, IMPROVED_QUICK); 0 oj{e9h  
} }\u%)uZ  
private static String[] name={ h#m:Y~GoF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" $# !UGY  
}; .Y(lB=pV  
Z2rzb{oS}  
private static Sort[] impl=new Sort[]{ << ;HY}s  
new InsertSort(), 7{An@hNh  
new BubbleSort(), LZc$:<J<6  
new SelectionSort(), WfDX"rA  
new ShellSort(), M,t*nG  
new QuickSort(), C3\E.u ?  
new ImprovedQuickSort(), "<w2v'6S  
new MergeSort(), M. )}e7  
new ImprovedMergeSort(), ^6a S]t  
new HeapSort() h^A3 0f_x  
}; pFJQ7Jlx  
! FR%QGn1  
public static String toString(int algorithm){ 6mu<&m@  
return name[algorithm-1]; Ob8B  
} sCF40AoY&  
Zgg'9E  
public static void sort(int[] data, int algorithm) {  gmRT1T  
impl[algorithm-1].sort(data); Ki/'Ic1  
} 2sqm7th  
bbNU\r5%  
public static interface Sort { ]dHB}  
public void sort(int[] data); &v$,pg%-:  
} Lvi[*une|  
^IVe[P'  
public static void swap(int[] data, int i, int j) { &@% b?~  
int temp = data; ZMoJ#p(  
data = data[j]; ^KkRF":  
data[j] = temp; @q&|MMLt  
} ?L@@;tt  
} WDE e$k4.  
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