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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。 r6A7}v  
插入排序: mU*GcWbc+  
? in&/ZrB  
package org.rut.util.algorithm.support; P iN3t]2  
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import org.rut.util.algorithm.SortUtil; ,}NG@JID  
/** #2pgh?  
* @author treeroot sbRg=k&Ns  
* @since 2006-2-2 = zsXa=<  
* @version 1.0 Ws=J)2q  
*/ 6D$xG"c  
public class InsertSort implements SortUtil.Sort{ l|DOsI'r  
cu Nwv(P  
/* (non-Javadoc) GovGh? X#x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *e^ ZH  
*/ j*P@]&e7d  
public void sort(int[] data) { sh0O~%]g  
int temp; 1vobfZ-w9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Y }0-&  
} Th-zMQ4  
} {MIs%w.G  
} wc;5tb#  
L-fAT'!'  
} '+`CwB2  
cewQQ&  
冒泡排序: 3T_-_5[c  
Q (`IiV   
package org.rut.util.algorithm.support; Na#2sb[)  
2WKA] l;  
import org.rut.util.algorithm.SortUtil; Tux~4W  
)sW1a  
/** Bq'hk<ns[  
* @author treeroot k(s3~S2h  
* @since 2006-2-2 e Q0bx&  
* @version 1.0 ;Eck7nRA)  
*/ &vLZj  
public class BubbleSort implements SortUtil.Sort{ Jg7IGU(dct  
,Qp58u2V  
/* (non-Javadoc) nwz}&nR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 }:k w  
*/ hj-M #a  
public void sort(int[] data) { ,]o32@   
int temp; D@mDhhK_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )]v vp{  
if(data[j] SortUtil.swap(data,j,j-1); i^ 1P6B  
} X2s=~)`#c  
} KBXdr52"  
} !Qn:PSk  
} Xc'yz 2B  
SMnbI .0  
} b+hZ<U/  
:V`q;g  
选择排序: w^dB1Y7c(W  
x *(pr5k  
package org.rut.util.algorithm.support; z]tvy).  
K2NnA  
import org.rut.util.algorithm.SortUtil; .Yo# vV  
7n %QP  
/** ~aBALD0D;  
* @author treeroot S0\:1B  
* @since 2006-2-2 R D)dw  
* @version 1.0 GK:*|jV  
*/ l'c|I &Y]  
public class SelectionSort implements SortUtil.Sort { TMGZHOAt  
.0Cpqn,[  
/* <TDgv%eg0  
* (non-Javadoc) ?eeE[F  
* Pf]L`haGN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6=FF*"-6E  
*/ aY6]NpT  
public void sort(int[] data) { V[CS{Hy'  
int temp; he 9qWL&^G  
for (int i = 0; i < data.length; i++) { k4eV*e8  
int lowIndex = i; Z#d_<e?  
for (int j = data.length - 1; j > i; j--) { m/CA  
if (data[j] < data[lowIndex]) { GQT|T0>Ro  
lowIndex = j; ,>e)8  
} i_I`Y  
}  _8t{4C  
SortUtil.swap(data,i,lowIndex); .,-t}5(VSq  
} p-M QI }  
} <^OGJ}G  
n&k1'KL&  
} |7%M:7 Q  
mR?OSeeB  
Shell排序: R$wo{{KX  
t hTY('m  
package org.rut.util.algorithm.support; izOtt^#DZt  
t4 $cMf  
import org.rut.util.algorithm.SortUtil; 4WU 6CN  
qJUu9[3'm  
/** (7&[!PS  
* @author treeroot 'lg6<M%#[  
* @since 2006-2-2 9tqX77UK  
* @version 1.0 fk;39$[  
*/ ,C!MHn^$  
public class ShellSort implements SortUtil.Sort{ a'W-&j  
&U!@l)<  
/* (non-Javadoc) HSq&'V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #*XuU8q?  
*/ Lw1~$rZg  
public void sort(int[] data) { 3/P2&m  
for(int i=data.length/2;i>2;i/=2){ B!yAam#^  
for(int j=0;j insertSort(data,j,i); NkA|T1w7  
} n*hHqZl  
} ?tg(X[h{S  
insertSort(data,0,1); 7l%O:M(\  
} yLG`tU1  
x~Y]c"'D  
/** 89?AcZ.D  
* @param data ?HAWw'QW  
* @param j |'Z6M];8t  
* @param i ig)rK<@*[  
*/ -"#;U`.oh7  
private void insertSort(int[] data, int start, int inc) { _.yBX\tf[  
int temp; u6$fF=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >@` D@_v  
} ]t(;bD hT  
} \k;*Ej~.  
} rt^<=|Z  
[C.Pzo  
} l0l2fwz(  
Tz:mj  
快速排序: rq:R6e  
]|@RWzA  
package org.rut.util.algorithm.support; Xq` '^)  
mtvfG  
import org.rut.util.algorithm.SortUtil; uR"(0_  
"O!J6  
/** H3nx8R$j](  
* @author treeroot zkA"2dh  
* @since 2006-2-2 ;n?H/(6X8>  
* @version 1.0 z%<Z#5_N  
*/ &J,MJ{w6"  
public class QuickSort implements SortUtil.Sort{ 2 <y!3OeN  
]KBzuz%  
/* (non-Javadoc) L*"Q5NzB]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RbM`"wrZ  
*/ [f!sBJ!  
public void sort(int[] data) { OjcxD5"v9  
quickSort(data,0,data.length-1); Dh*Uv,  
} tl !o;`W  
private void quickSort(int[] data,int i,int j){ y_;LTCj?  
int pivotIndex=(i+j)/2; 8F9sKRq|rO  
file://swap c!d>6:\  
SortUtil.swap(data,pivotIndex,j); }YfM <  
TGlIt<&  
int k=partition(data,i-1,j,data[j]); rd vq(\A  
SortUtil.swap(data,k,j); Tky\W%Ag  
if((k-i)>1) quickSort(data,i,k-1); /\q1,}M  
if((j-k)>1) quickSort(data,k+1,j); |kB1>$  
WyF1Fw  
} /=).)<&|R  
/** xxLD8?@e7  
* @param data FFQ=<(Ki  
* @param i FZ)_WaqGf  
* @param j <DxUqCE  
* @return 2^'|[*$k1@  
*/ K&0'@#bE\  
private int partition(int[] data, int l, int r,int pivot) { JPltB8j?  
do{ c!{v/zOz  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ROw9l!YF  
SortUtil.swap(data,l,r); ]2`PS<a2  
} X~(%Y#6  
while(l SortUtil.swap(data,l,r); 3C=ON.1eg  
return l; #T &z`  
} @doo2qqIe]  
<x e=G]v  
} 6nRXRO  
N|WZk2 "  
改进后的快速排序: K; ,2ag  
# xx{}g]%  
package org.rut.util.algorithm.support; t2Q40' `  
BG\g`NK}Z  
import org.rut.util.algorithm.SortUtil; y9kydu#q  
ckY,6e"6  
/** ( qG | .a  
* @author treeroot i"V2=jTeBv  
* @since 2006-2-2 @F%H 1  
* @version 1.0 !Bcd\]q  
*/ w 4-E@>%  
public class ImprovedQuickSort implements SortUtil.Sort { f?}~$agc  
,<!_MNw[  
private static int MAX_STACK_SIZE=4096; ^vw? 4O  
private static int THRESHOLD=10; \D}K{P  
/* (non-Javadoc) )FVW/{NF@q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U{6i5;F#H  
*/ aZ"9)RJe  
public void sort(int[] data) { Vj(}'h-c\  
int[] stack=new int[MAX_STACK_SIZE]; !*JE%t  
d}#G~O+y3v  
int top=-1; kq xX!  
int pivot; 4Y2l]86  
int pivotIndex,l,r; -L<''2t  
NZ`Mq  
stack[++top]=0; XMzL\Edo  
stack[++top]=data.length-1; >T: Yp<  
%P05k  
while(top>0){ iU]py  
int j=stack[top--]; s wgn( -  
int i=stack[top--]; K89 AZxH  
i]oSVXx4WC  
pivotIndex=(i+j)/2; DG1C_hu i  
pivot=data[pivotIndex]; CvDy;'{y1  
`3GC}u>}  
SortUtil.swap(data,pivotIndex,j); aMI\gCB/  
*E lR  
file://partition z'FD{xdf  
l=i-1; T"ors]eI  
r=j; S,A\%:Va  
do{ :j2G0vHIl(  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); l;_zXN   
SortUtil.swap(data,l,r); ^wDZg`  
} )Nv$ SH  
while(l SortUtil.swap(data,l,r); sY,q*}SLD  
SortUtil.swap(data,l,j); ?L.c~w;l  
(NPDgR/  
if((l-i)>THRESHOLD){ /4w"akB|P  
stack[++top]=i; gQHE2$i>  
stack[++top]=l-1; BfQRw>dZ"{  
} E5@U~|V[  
if((j-l)>THRESHOLD){ g_{hB5N](7  
stack[++top]=l+1; Ewg5s?2|  
stack[++top]=j; wbg_%h:  
} ,jVj9m  
5T]GyftFV  
} aDr46TB`J  
file://new InsertSort().sort(data); P){F2&!P  
insertSort(data); ;;4xpg  
} u`GzYG-L  
/** 7/^`y')  
* @param data 5@_c<   
*/ 5<1,`Bq@  
private void insertSort(int[] data) { 57:Wh= x  
int temp; zyey5Z:7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J*@(rb#G  
} K5(:UIWx  
} f{_K%0*  
} T^'NC8v  
!B 36+W+  
} ]u~6fknm  
h ]'VAt  
归并排序: CH h]v.V  
)./pS~  
package org.rut.util.algorithm.support; &Uqm3z?v  
}M%U}k]+@  
import org.rut.util.algorithm.SortUtil; e> "/Uii  
Ya$JX(aUe  
/** ;Kb]v\C:  
* @author treeroot ^'"sFEV7RN  
* @since 2006-2-2 WR;"^<i9  
* @version 1.0 LeY!A#j  
*/  &gIDcZ  
public class MergeSort implements SortUtil.Sort{ f#9DU}2m  
\gd.Bl  
/* (non-Javadoc) _Se~bkw?v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <cTusC<  
*/ etbB;!6  
public void sort(int[] data) { $O|J8;"v  
int[] temp=new int[data.length]; Rx e sK  
mergeSort(data,temp,0,data.length-1); 6.fahg?E  
} +{* @36A5A  
`9%Q2Al  
private void mergeSort(int[] data,int[] temp,int l,int r){ Mq7d*Bgb  
int mid=(l+r)/2; +/idq  
if(l==r) return ; z;x1p)(xt  
mergeSort(data,temp,l,mid); dL9QYIfP  
mergeSort(data,temp,mid+1,r); MguH)r` uT  
for(int i=l;i<=r;i++){ +f)Nf) \q  
temp=data; rw*#ta O  
} Z$h39hm?c  
int i1=l; &^-quzlZ  
int i2=mid+1; vF45tw  
for(int cur=l;cur<=r;cur++){ 71GLqn?  
if(i1==mid+1) >icK]W  
data[cur]=temp[i2++]; G~Oj}rn  
else if(i2>r) +*OY%;dQ7@  
data[cur]=temp[i1++]; 4qw&G  
else if(temp[i1] data[cur]=temp[i1++]; z1oikg:?4  
else | ?Js)i  
data[cur]=temp[i2++]; pq;)l( Hi  
} B@w Q [  
} Vab+58s5  
<fY<.X  
} EFl[u+ 1tx  
/?b<}am  
改进后的归并排序: L|DSEth  
V0p@wG3  
package org.rut.util.algorithm.support; Q^q G=  
, O=@I  
import org.rut.util.algorithm.SortUtil; mUi|vq)`=D  
aO@zeKg  
/** 0-dhGh?.  
* @author treeroot oh{!u!L`]  
* @since 2006-2-2 z_XI,u}  
* @version 1.0 pf.T{/%  
*/ G6X  
public class ImprovedMergeSort implements SortUtil.Sort { h%kB>E~  
G7lC'~}  
private static final int THRESHOLD = 10; dO Y+| P\  
ye U4,K o  
/* 3mWd?!+m=  
* (non-Javadoc) Xg#g`m%(M  
* ~mUP!f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,wmPK;j  
*/ `m5cU*@D  
public void sort(int[] data) { htg+V-,  
int[] temp=new int[data.length]; rn1FCJ<;H  
mergeSort(data,temp,0,data.length-1); l7 D/ ]&  
} ?9q{b\=l  
Yyl2J#$!  
private void mergeSort(int[] data, int[] temp, int l, int r) { Kb%j;y  
int i, j, k; YW"?Fy  
int mid = (l + r) / 2; 1 sCF -r  
if (l == r) o?P(Fuf  
return; "42u0rH0J  
if ((mid - l) >= THRESHOLD) d>F=|dakL  
mergeSort(data, temp, l, mid); ff"Cl p  
else zqAK|jbL  
insertSort(data, l, mid - l + 1); whP>'9t.w  
if ((r - mid) > THRESHOLD) (E)/' sEb  
mergeSort(data, temp, mid + 1, r); Xmy(pV!PF  
else ]4@z.1Mr  
insertSort(data, mid + 1, r - mid); Dbr(Wg  
yS/ovd  
for (i = l; i <= mid; i++) { T8YqCT"EA<  
temp = data; ,)+O.Lf7&.  
} j#%*@]>Tg  
for (j = 1; j <= r - mid; j++) { g#=^U`y  
temp[r - j + 1] = data[j + mid]; R{.wAH(  
} Ki-CJ y  
int a = temp[l]; 57+^T}/>  
int b = temp[r]; ?,|_<'$4T  
for (i = l, j = r, k = l; k <= r; k++) { 6X5m1+ Oi^  
if (a < b) { De|@}@  
data[k] = temp[i++]; <u44YvLBm  
a = temp; C78d29  
} else { ^sH1YE}0  
data[k] = temp[j--]; ;D]TPBE  
b = temp[j]; (JFa  
} kYs2AzS{d  
} hmkcW r`  
} uXeBOLC  
j^Zp BNL  
/** rjU $*+  
* @param data yB}y'5  
* @param l X4i$,$C  
* @param i N|q:wyS|  
*/ A"eT @  
private void insertSort(int[] data, int start, int len) { +XWXHt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); L.!:nu]rV  
} vE?qF9I{$0  
} ?Z!itB~  
} R|t.wawCo  
} gzzPPd,hd  
c#9 zw[y-L  
堆排序: ^f!d8 V  
cJ:BEe  
package org.rut.util.algorithm.support; =KT7ZSTV  
r3Z-mJ$:  
import org.rut.util.algorithm.SortUtil; :[(X!eP  
)2F:l0g  
/** k` (_~/#  
* @author treeroot @]*z!>1  
* @since 2006-2-2 /]]\jj#^  
* @version 1.0 1; L!g*!E  
*/ @R}L 4  
public class HeapSort implements SortUtil.Sort{ $yaE!.Kc  
x)#k$ QU  
/* (non-Javadoc) T:cSv @G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U$VTk  
*/ ;?inf`t  
public void sort(int[] data) { |c8p{)  
MaxHeap h=new MaxHeap(); jopC\Z  
h.init(data); 0; V{yh  
for(int i=0;i h.remove(); BY,%+>bc)  
System.arraycopy(h.queue,1,data,0,data.length); 1[3"|  
} vR1%&(f{  
zZ-e2)1v  
private static class MaxHeap{ -lSm:O@'  
9'//_ A,  
void init(int[] data){ ZWf{!L,@Z  
this.queue=new int[data.length+1]; .(9IAAwKn  
for(int i=0;i queue[++size]=data; )IZ$R*Y{  
fixUp(size); # FaR?L![Y  
} !;CY @=  
} -oF4mi8S  
tGmyTBgx  
private int size=0; N.eSf  
7SAu">lIl  
private int[] queue; i8HSYA  
~,':PUkiV  
public int get() { %I Y-0\  
return queue[1]; 8Qu].nKe  
} [zf9UUc~  
f.+e  
public void remove() { l`$f@'k  
SortUtil.swap(queue,1,size--); {!oO>t  
fixDown(1); Y]8l]l 1  
} {2Gp+&  
file://fixdown +~FH'DsT  
private void fixDown(int k) { _,F wt  
int j; F>*w)6 4~  
while ((j = k << 1) <= size) { <\zb*e&vr  
if (j < size %26amp;%26amp; queue[j] j++; (:T~*7/"  
if (queue[k]>queue[j]) file://不用交换 Kq!n `@  
break; DU1,i&(  
SortUtil.swap(queue,j,k); !JYDg  
k = j; [U3z*m>e;  
} qd{|"(9B  
} y ImriCT  
private void fixUp(int k) { sMO3eNLn  
while (k > 1) { _\o +9X!  
int j = k >> 1; @Gn9x(?J  
if (queue[j]>queue[k]) 9MM4C  
break; yMz@-B  
SortUtil.swap(queue,j,k); }3[ [ONA  
k = j; U?|s/U  
} (Z`Y   
} N;[w`d'#  
+}9%Duim  
} Nt/*VYUn  
2? !b!  
} 7^Onq0ym T  
|Q:`:ODy`5  
SortUtil: ]Dx?HBM"DC  
u4+VG5.rhT  
package org.rut.util.algorithm; cVulJ6  
^O892-R  
import org.rut.util.algorithm.support.BubbleSort; 2N)vEUyDV  
import org.rut.util.algorithm.support.HeapSort; k7W8$8 v  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8%nTDSp&t  
import org.rut.util.algorithm.support.ImprovedQuickSort; g>f(5  
import org.rut.util.algorithm.support.InsertSort; ;utjW1y  
import org.rut.util.algorithm.support.MergeSort; (\R"v^  
import org.rut.util.algorithm.support.QuickSort; c yN_Sg  
import org.rut.util.algorithm.support.SelectionSort; 5jjJQ'  
import org.rut.util.algorithm.support.ShellSort; >) S a#w;  
]Uxx_1$,  
/** 23+GX&Rp  
* @author treeroot b|fq63ar;  
* @since 2006-2-2 XTeU 2I  
* @version 1.0 I|R9@  
*/ i1G}m Yz_  
public class SortUtil { (4c<0<"$  
public final static int INSERT = 1; UJ6WrO5#kB  
public final static int BUBBLE = 2; NWNgh/9?  
public final static int SELECTION = 3; i!,>3  
public final static int SHELL = 4; ![Jxh,f  
public final static int QUICK = 5; *2@ q=R-1  
public final static int IMPROVED_QUICK = 6; C8G['aQ  
public final static int MERGE = 7; =~HX/]zF  
public final static int IMPROVED_MERGE = 8; [;.zl1S<  
public final static int HEAP = 9; z1]RwbA?1  
rqa;MPl  
public static void sort(int[] data) { !EKF^n6  
sort(data, IMPROVED_QUICK); : wn![<`3q  
} e dD(s5  
private static String[] name={ TS1 k'<c?  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fYCAwS{  
}; +p43d:[  
Vx#xq#wK  
private static Sort[] impl=new Sort[]{ H-UMsT=g]  
new InsertSort(), (iS94}-)  
new BubbleSort(), z-,U(0 .  
new SelectionSort(), _N<qrH^;  
new ShellSort(), V25u'.'v  
new QuickSort(), 7z+NR&' M$  
new ImprovedQuickSort(), }Rt<^oya*  
new MergeSort(), s}HTxY;  
new ImprovedMergeSort(), +w}5-8mH&>  
new HeapSort() % mI q,  
}; beIEy(rA  
].1R~7b  
public static String toString(int algorithm){ ^|gN?:fA}  
return name[algorithm-1]; =CqLZ$10  
} Pp.X Du  
HWs?,AJNxB  
public static void sort(int[] data, int algorithm) { (,<?Pg7v:f  
impl[algorithm-1].sort(data); %OzxR9  
} 8"S0E(,mu  
Wxg|jP$~   
public static interface Sort { a{)"KAP  
public void sort(int[] data); ]7br*t^zv  
} #~ >0Dr  
?.~@lE  
public static void swap(int[] data, int i, int j) { 3[Z?`X  
int temp = data; / ?Q@Pn  
data = data[j]; b8`O7@ar  
data[j] = temp; %F{@DN`  
} f:BW{Cij;y  
} (2a~gQGD  
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