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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。 Ai[@2AyU  
插入排序: pU !:  
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package org.rut.util.algorithm.support; .N.RpRz{f  
#-f9>S9_  
import org.rut.util.algorithm.SortUtil; ZYY2pY 1  
/** |94o P>d  
* @author treeroot G rU`;M"  
* @since 2006-2-2 5psJv|Zo]  
* @version 1.0 Q4LPi;{\  
*/ Y G8C<g6E7  
public class InsertSort implements SortUtil.Sort{ (t V T&eO  
[:gg3Qzx  
/* (non-Javadoc) {5X,xdzR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) siCm)B  
*/ W!O/t^H>  
public void sort(int[] data) { bQq/~  
int temp; +"BJjxG  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [ei~Xkzkj  
} %s+'"E"E  
} R6fkc^  
} sU*?H`U3d  
/t7f5mA  
} .AO-S)wHR  
Op]*wwI*h  
冒泡排序: n~\; +U  
5XHejHn>  
package org.rut.util.algorithm.support; RC1bTM  
u<fZ.1  
import org.rut.util.algorithm.SortUtil; > K,QP<B  
Jh&DL8`  
/** M@h"FuX:  
* @author treeroot :n{{\SSIgX  
* @since 2006-2-2 D^m2iW;  
* @version 1.0 0?/gEr  
*/ ^zO{Aks  
public class BubbleSort implements SortUtil.Sort{ s K+uwt  
9U.Ctx:F  
/* (non-Javadoc) !i (V.A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2AhfQ%Y=  
*/ $6*Yh-"g  
public void sort(int[] data) { "p;tj74O9  
int temp; u*=^>LD  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e CN:  
if(data[j] SortUtil.swap(data,j,j-1); h~9P3 4m  
} i?(cp["7  
} d ([~o  
} .(cpYKFX  
} =d ;#Nu-  
5rck]L'  
} |36%B7H  
d;gs1]E50  
选择排序: |J:r]);@K  
#CI0G  
package org.rut.util.algorithm.support; \rxjvV4fcZ  
FA{Q6fi:2  
import org.rut.util.algorithm.SortUtil; :X'B K4EN  
[[<TW}  
/** uQdy  
* @author treeroot .4"BN<9  
* @since 2006-2-2 D>W&#A8&y  
* @version 1.0 fUWrR1  
*/ JmR2skoV,  
public class SelectionSort implements SortUtil.Sort { %Y;^$%X%_  
d1c+Ii%  
/* X=m^+%iD  
* (non-Javadoc) J Hm Pa  
* $},XRo&R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }`QZV_  
*/ :ZB.I(v  
public void sort(int[] data) { `{ >/'o  
int temp; `|AH3v1  
for (int i = 0; i < data.length; i++) { 3]JJCaf  
int lowIndex = i; ."BXA8c;A  
for (int j = data.length - 1; j > i; j--) { juF=ZW%i  
if (data[j] < data[lowIndex]) { 5&EBU l}  
lowIndex = j; d-Z2-89K  
} +VW8{=$  
} ,T zlW\?\  
SortUtil.swap(data,i,lowIndex); 08^f|K  
} `!I/6d?A  
} )=K8mt0qob  
YV|_y:-  
} ~%h )G#N  
|?^qs nB  
Shell排序: A. tGr(r  
}ixCbuD  
package org.rut.util.algorithm.support; z{1A x  
UTu~"uCR  
import org.rut.util.algorithm.SortUtil; \VOv&s;h  
viYrPhH+z  
/** YfT D  
* @author treeroot EHf,VIC8  
* @since 2006-2-2 V~/@KU8cH  
* @version 1.0 '9.@r\g  
*/ M"s:*c_6  
public class ShellSort implements SortUtil.Sort{ !^MwE]  
ue7D' UZL>  
/* (non-Javadoc) \Q}Y"oq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U.~G{H`G,u  
*/ s Y1@~v  
public void sort(int[] data) { s=jH1^  
for(int i=data.length/2;i>2;i/=2){ MmvJ)|&t  
for(int j=0;j insertSort(data,j,i); <h#W*a  
} )ej1)RU"  
}  Hk4k  
insertSort(data,0,1); |H^v8^%>zm  
} nxuH22:  
Gq[5H(0/c  
/** !'# D~   
* @param data sDg1nKw(  
* @param j 3p HI+a  
* @param i ?nL,Otz  
*/ L58H)V3Pn  
private void insertSort(int[] data, int start, int inc) { 5p~5-_JX  
int temp; p JF 9Z  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eA]8M^  
} xqg4b{  
} 4,:I{P_>6B  
} Y&,}q_Z:  
t`hes $E  
} -lfDoNRhQ  
%4M,f.[e  
快速排序: 5 Slz ^@n  
x5\Du63  
package org.rut.util.algorithm.support; a;; Es  
9\Ff z&  
import org.rut.util.algorithm.SortUtil; V73/q  
4*f+np  
/** *mj=kJ7(  
* @author treeroot 5-fASN.Lx  
* @since 2006-2-2 :!CnGKgt  
* @version 1.0 #=)>,6Z w  
*/ Zi]E!Tgn  
public class QuickSort implements SortUtil.Sort{ kUGFg{"  
->;2CcpHB  
/* (non-Javadoc) 7>MG8pf3a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2o[ceEg  
*/ gx^!&>eIb#  
public void sort(int[] data) { vmNI$ KZM  
quickSort(data,0,data.length-1); b5%<},ySq  
} l0t(t*[Mj  
private void quickSort(int[] data,int i,int j){ B<.\^f uS  
int pivotIndex=(i+j)/2; R87@.  
file://swap *K?UWi#$  
SortUtil.swap(data,pivotIndex,j); d:A'|;']  
2x|F Vp  
int k=partition(data,i-1,j,data[j]); 5"b1: w@  
SortUtil.swap(data,k,j); cQd?,B3#F  
if((k-i)>1) quickSort(data,i,k-1); *v8daF  
if((j-k)>1) quickSort(data,k+1,j); sxuP"4  
lq3D!+ m  
} )AcevEHB  
/** WB'1_a  
* @param data {=d}04i)E"  
* @param i x.pg3mVd>  
* @param j J1gnR  
* @return $A,YQH+  
*/ WZ!zUUp}V  
private int partition(int[] data, int l, int r,int pivot) { oVp/EQ  
do{ rzie_)a Y%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2)$-L'YS  
SortUtil.swap(data,l,r); jFKp~`/#  
} R64f0N K.  
while(l SortUtil.swap(data,l,r); 6)i>qz).  
return l; m-~3c]pA  
} LTA0WgzR)  
,vMAX?c  
} gWjr|m<  
wmR~e  
改进后的快速排序: ^@=4HtA  
lqrI*@>Tz  
package org.rut.util.algorithm.support;  yoe@]c=  
=5^1Bl  
import org.rut.util.algorithm.SortUtil; 2-UD^;0  
wXnVQ-6H  
/** =tA;JB  
* @author treeroot H ~fF; I  
* @since 2006-2-2 'ks  .TS&  
* @version 1.0 6q`)%"4k  
*/ WO!OaC?+B,  
public class ImprovedQuickSort implements SortUtil.Sort { _ 3>E+9TQ  
.X.6<@$  
private static int MAX_STACK_SIZE=4096; rqBoUS4  
private static int THRESHOLD=10; w3b?i89  
/* (non-Javadoc) y}={S,z%22  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y eIS}O  
*/ !or_CJ8%  
public void sort(int[] data) { g__s(  IJ  
int[] stack=new int[MAX_STACK_SIZE]; ='1hvv/  
j bT{K|d-  
int top=-1; 6v%ePFul  
int pivot; $7Z-Nn38  
int pivotIndex,l,r; 6#jql  
%B1TN#KoT  
stack[++top]=0; < 0~1   
stack[++top]=data.length-1; [x=(:soEqC  
LN$T.r+  
while(top>0){ xf7YIhL^*  
int j=stack[top--]; aYc<C$:NC"  
int i=stack[top--]; X+u1p?  
%`]!atH  
pivotIndex=(i+j)/2; Y+g(aak+.  
pivot=data[pivotIndex]; rxy5Nrue  
>P}XCAU  
SortUtil.swap(data,pivotIndex,j); <RC%<  
rhaq!s38:  
file://partition hc0$mit  
l=i-1; #E\6:UnT  
r=j; %8Y+Df;ax  
do{ 5{DwD{Q  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -U_,RMw~  
SortUtil.swap(data,l,r); X6w+L?A  
} - 3PLP$P  
while(l SortUtil.swap(data,l,r); ([rSYKpi  
SortUtil.swap(data,l,j); sy4Nm0m  
ld({1jpX,  
if((l-i)>THRESHOLD){ 1#AxFdm1  
stack[++top]=i; _tje xS'  
stack[++top]=l-1; 8 ?y|  
} #v~dhx=R  
if((j-l)>THRESHOLD){ &dni6E4  
stack[++top]=l+1; ,(sE|B#s  
stack[++top]=j; `]4(Z"R  
} cZoj|=3a  
&0G9v  
} {0/2Hw n  
file://new InsertSort().sort(data); #k>A,  
insertSort(data); L>7@!/ 9L  
}  ZpBP#Y*  
/** NN+;I^NqW&  
* @param data }[@Q**j(  
*/ Q]K$yo  
private void insertSort(int[] data) { (=1zMZ o  
int temp;  nsV=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c (5XT[Tw  
} :.a184ax  
} %WmTG }L)  
} <*u^8lCA  
vE#8&Zq  
} ?X\.O-=4X  
i<tJG{A=  
归并排序: !SnLvW89Z  
H*f2fyC1\  
package org.rut.util.algorithm.support; /e|qyWs  
4 540Lw'A  
import org.rut.util.algorithm.SortUtil; {5%d#|?  
=_@) KWeX$  
/** ug;\`.nT^  
* @author treeroot ;9ChBA  
* @since 2006-2-2 -^7 $HD  
* @version 1.0 8uW%jG3/  
*/ W*(- * \1[  
public class MergeSort implements SortUtil.Sort{ 9OY ao  
q j9q   
/* (non-Javadoc) 61gyx6v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DYgB_Iak  
*/ K@Q%NK,  
public void sort(int[] data) { iG~&uEAJ  
int[] temp=new int[data.length]; OqF8KJnO;  
mergeSort(data,temp,0,data.length-1); }'>mT,ytgk  
} *W,[k&;:  
Hmx.BBz  
private void mergeSort(int[] data,int[] temp,int l,int r){ uKD }5M?{  
int mid=(l+r)/2; ,D<U PtPQ  
if(l==r) return ; dmLx$8  
mergeSort(data,temp,l,mid); !yq98I'  
mergeSort(data,temp,mid+1,r); q.@% H}  
for(int i=l;i<=r;i++){ ?(Plb&kR  
temp=data; O2 + K  
} ^si[L52BZ  
int i1=l; !V/7q'&t=  
int i2=mid+1; 2:nI4S  
for(int cur=l;cur<=r;cur++){ w5/6+@}  
if(i1==mid+1) s6_i>  
data[cur]=temp[i2++]; b9-3  
else if(i2>r) iAXGf V  
data[cur]=temp[i1++]; lHTr7uF(  
else if(temp[i1] data[cur]=temp[i1++]; zh\"sxL  
else 15aPoxo>  
data[cur]=temp[i2++]; 7kT X  
} tuuwoiQ*`  
} Hfo<EB2Y9N  
`f~$h?}3-@  
} Lz:FR*  
YH^@8   
改进后的归并排序: EQ :>]O  
dIhfp7|  
package org.rut.util.algorithm.support; xpwy%uo  
E m+&I  
import org.rut.util.algorithm.SortUtil; &_hEM~{  
 +`ov1h  
/** SK 5]7C2  
* @author treeroot |m@>AbR5dk  
* @since 2006-2-2 +StsSZ  
* @version 1.0 w&J_c8S  
*/ 8ZCA vEy  
public class ImprovedMergeSort implements SortUtil.Sort { .4$F~!aj9  
[*0M$4  
private static final int THRESHOLD = 10; '#,C5*`  
WQD:~*C:  
/* 6uUn  
* (non-Javadoc) Z*h}E  
* fM*?i"j;Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G8/q&6f_  
*/ ,\#s_N 7  
public void sort(int[] data) { cN&:V2,  
int[] temp=new int[data.length]; C|3cQ{  
mergeSort(data,temp,0,data.length-1); -:J<JX)o  
} 72*j6#zS  
UTN[! 0[  
private void mergeSort(int[] data, int[] temp, int l, int r) { .P?n<n#  
int i, j, k; 2Yd@ V}  
int mid = (l + r) / 2; [cl+AV "  
if (l == r) 9e vQQN6D|  
return; )N1iGJO)  
if ((mid - l) >= THRESHOLD) oj)(.X<8N  
mergeSort(data, temp, l, mid); N#$]W"U  
else PCV#O63[  
insertSort(data, l, mid - l + 1); Q&^\YgkCf  
if ((r - mid) > THRESHOLD) (pd~ 2!;C  
mergeSort(data, temp, mid + 1, r); &%qDi_UD  
else Tm7LaM  
insertSort(data, mid + 1, r - mid); MEp{&#v|1  
x7`+T 1IJ  
for (i = l; i <= mid; i++) { ;)P=WS:=  
temp = data; TqfL Sm|  
} Ck"db30.  
for (j = 1; j <= r - mid; j++) { u&UmI-}  
temp[r - j + 1] = data[j + mid]; >lzXyT6x8  
} 83{P7PBQ;]  
int a = temp[l]; suGd&eP|  
int b = temp[r]; _Rk vg-  
for (i = l, j = r, k = l; k <= r; k++) { dn Sb}J  
if (a < b) { f\.y z[  
data[k] = temp[i++]; ]+B.=mO_  
a = temp; ^W@%(,xb  
} else { (~E-=+R[$&  
data[k] = temp[j--]; z5Tsu1 c  
b = temp[j]; t+]1D@hv  
} H=g%>W%3  
} `<| <1,  
} |>m'szca4  
8c_X`0jy  
/** i ?uX'apk  
* @param data X-,oL.:c  
* @param l @7.7+blS"H  
* @param i r3-<~k-  
*/ P B5h5eX  
private void insertSort(int[] data, int start, int len) { .]JIo&>5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); T{"Ur :p  
} o)7Ot\:E  
} 9&`";dg  
} S7#dyAX8  
} j|N<6GSke  
a l6y=;\jZ  
堆排序: [C<K~  
M*Ej*#  
package org.rut.util.algorithm.support; "+wkruC  
S?C.:  
import org.rut.util.algorithm.SortUtil; iF837ng5  
op9vz[o#4  
/** OJJ [Er1  
* @author treeroot H{S+^'5Y.  
* @since 2006-2-2 kS9;Tjcx  
* @version 1.0 Fu5Y<*x  
*/ T]zD+/=  
public class HeapSort implements SortUtil.Sort{ Y Q.Xl_  
lz36;Fp  
/* (non-Javadoc) 8~s0%%{,M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d,Oagx  
*/ \@N~{72:k  
public void sort(int[] data) { g7*Uuh#  
MaxHeap h=new MaxHeap(); NqNU:_}  
h.init(data); ~1twGG_;  
for(int i=0;i h.remove(); }HmkTk  
System.arraycopy(h.queue,1,data,0,data.length); P3Lsfi.  
} CV\y60n  
vTK8t:JQ~  
private static class MaxHeap{ \b8#xT}  
V@b7$z  
void init(int[] data){ [[6" qq  
this.queue=new int[data.length+1]; A|:+c*7]  
for(int i=0;i queue[++size]=data; RjPkH$u'Pj  
fixUp(size); 7wPI)]$  
} nLG)>L  
} r `n|fD.  
{#4a}:3  
private int size=0; H>;,r ,  
Q@>1z*'I  
private int[] queue; a7F_{Mm  
Qzo -Yw`=  
public int get() { H.' 9]*  
return queue[1]; C7*YZe  
} W;UPA~nT~  
h$6'9rL&i  
public void remove() { r^<,f[yH  
SortUtil.swap(queue,1,size--); V&vG.HAT  
fixDown(1); l5&5VC)  
} fR'!p: ~  
file://fixdown {Bk` Zlki  
private void fixDown(int k) { xRhGBb{@s  
int j; ]BjY UTNm  
while ((j = k << 1) <= size) { <jF&+[*iT  
if (j < size %26amp;%26amp; queue[j] j++; . !Z5A9^  
if (queue[k]>queue[j]) file://不用交换 q0Q[]|L  
break; !&g_hmnIF  
SortUtil.swap(queue,j,k); V4ePYud;^  
k = j; F+Qnf'at1  
} )j~{P  
} :.]EM*p?GV  
private void fixUp(int k) { RH _b  
while (k > 1) { !-470J  
int j = k >> 1; %N ~c9B  
if (queue[j]>queue[k]) p}1gac_c  
break; Tgtym"=xd  
SortUtil.swap(queue,j,k); Y,Z$U| U  
k = j; %%?}db1n  
} GQY" +xa8]  
} Oy=0Hsh@x  
X=)L$Kd7  
} ;w"h n*  
mhhc}dS(H  
} JU^Y27  
Ua 6O~,\  
SortUtil: e.DN,rhqI  
cyB+(jLHDs  
package org.rut.util.algorithm; 1R~$m  
B F gxa#De  
import org.rut.util.algorithm.support.BubbleSort; Zn r4^i&(  
import org.rut.util.algorithm.support.HeapSort; 3MHpP5C  
import org.rut.util.algorithm.support.ImprovedMergeSort; U= f9b]Y  
import org.rut.util.algorithm.support.ImprovedQuickSort; XdV>6<gf{  
import org.rut.util.algorithm.support.InsertSort; *v K~t|z  
import org.rut.util.algorithm.support.MergeSort; kJf0..J[#<  
import org.rut.util.algorithm.support.QuickSort; D3dh,&KO\  
import org.rut.util.algorithm.support.SelectionSort; u;rmqo1  
import org.rut.util.algorithm.support.ShellSort; E.NfVeq  
RxJbQs$Ph  
/** [9Rh"H;h  
* @author treeroot JJWP te/  
* @since 2006-2-2 r`6f  
* @version 1.0 t855|  
*/ R"O%##Ws  
public class SortUtil { ]f &]E ~i  
public final static int INSERT = 1; K3 BWj33  
public final static int BUBBLE = 2; ~< UYJc  
public final static int SELECTION = 3; tg#jjXV\0p  
public final static int SHELL = 4; 1z&"V}y  
public final static int QUICK = 5; YQ?hAAJ  
public final static int IMPROVED_QUICK = 6; *#}=>, v  
public final static int MERGE = 7; \ { QH^  
public final static int IMPROVED_MERGE = 8; f~P YK  
public final static int HEAP = 9; Khi6z&B  
P}gtJ;  
public static void sort(int[] data) { vjm? X  
sort(data, IMPROVED_QUICK); ,JK0N_=  
} a1I-d=]  
private static String[] name={ y4p"LD5%^  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ce<z[?u  
}; }[PwA[k'  
_/>I-\xWA  
private static Sort[] impl=new Sort[]{ k}<H  
new InsertSort(), i{$P.i/&  
new BubbleSort(), !] uB4  
new SelectionSort(), t-C|x)J+  
new ShellSort(), U ^O4HJ  
new QuickSort(), <#M1I!R  
new ImprovedQuickSort(), 6<S-o|Xw  
new MergeSort(), EmUn&p%hI  
new ImprovedMergeSort(), }\8-&VoY#X  
new HeapSort() _)Txg2?=  
}; MH'%E^n `  
*.wj3' wV  
public static String toString(int algorithm){ >T [Y>]  
return name[algorithm-1]; |-{ Hy(9  
} yxpv;v:)=  
,|\\C6s  
public static void sort(int[] data, int algorithm) { ZyNgG9JL]  
impl[algorithm-1].sort(data); 7oIHp_Zq  
} P6>C+T1  
N@<-R<s^  
public static interface Sort { Il@K8?H@  
public void sort(int[] data); Nes|4Z<  
} /O.q4p  
b+whZtNk7  
public static void swap(int[] data, int i, int j) { RfvvX$  
int temp = data; 4|\M`T  
data = data[j]; AdDR<IW  
data[j] = temp; {GCp5  
} V[WZ#u-p  
} kP('X/  
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