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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。 +]Ev  
插入排序: lkJe7 +s  
&d]@$4u$;  
package org.rut.util.algorithm.support; w Ju9.  
|Z8Eu0RSb  
import org.rut.util.algorithm.SortUtil; (IIZvCek  
/** &g]s@S|%  
* @author treeroot =&m;5R  
* @since 2006-2-2 [EK@f,iM  
* @version 1.0 ER;\Aes*?  
*/ @Thrizh  
public class InsertSort implements SortUtil.Sort{ i/ PL!'oq  
r(rT.D&  
/* (non-Javadoc) onm" 7JsO'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CtZOIx.;|  
*/ #X0Xc2}{f  
public void sort(int[] data) { xl9S=^`=  
int temp; ~.z82m  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0D0uzUD-  
} o ^ 08<  
} fh` }~ aQ  
} MjbgAH-  
h)s&Nqg1B  
} M^G9t*I  
9U3.=J  
冒泡排序: <@c@`K  
g!Ui|]BI9  
package org.rut.util.algorithm.support; Iu^I?c[  
|W}D_2  
import org.rut.util.algorithm.SortUtil; 0 c ]]  
  `#l1  
/** cv. j  
* @author treeroot m%c]+Our`  
* @since 2006-2-2 5x!rT&!G  
* @version 1.0 yh'*eli  
*/ -J0I2D  
public class BubbleSort implements SortUtil.Sort{ S|?P#.=GX  
7cO1(yE#vr  
/* (non-Javadoc) {7` 1m!R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;D@F  
*/ `/<f([w  
public void sort(int[] data) { hsJGly5H  
int temp; )~IOsTjI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ X_)x Fg'k  
if(data[j] SortUtil.swap(data,j,j-1); >)k[085t  
} ""IPaNHQ  
} /?a9g>G%N  
} aO 2zD<d  
} (3=bKcD'  
I1JL`\;4  
} E:[!)UG|y  
!e+Sa{X  
选择排序: M~)iiKw~MY  
%v UUx+  
package org.rut.util.algorithm.support; 8"rK  
EJNHZ<  
import org.rut.util.algorithm.SortUtil; 5acC4v!T  
#TcX5  
/** g[;&_gL  
* @author treeroot ;u<F,o(  
* @since 2006-2-2 Swgvj(y;!A  
* @version 1.0 V7vojm4 O  
*/ ] #7baZ  
public class SelectionSort implements SortUtil.Sort { vzF6e eaD  
j"+6aD/lv  
/* -s ^cy+jd  
* (non-Javadoc) D;OPsNQ  
* NOf{Xx<#k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N:EljzvP}  
*/ O%<+&Q7  
public void sort(int[] data) { ReGT*+UN  
int temp; 3@* ~>H  
for (int i = 0; i < data.length; i++) { *z]P|_:&G  
int lowIndex = i; @6-3D/=  
for (int j = data.length - 1; j > i; j--) { S_s;foT  
if (data[j] < data[lowIndex]) { &a6-+r  
lowIndex = j; X5= Ki $+  
} G]dHYxG  
} e~nh95  
SortUtil.swap(data,i,lowIndex); 0*j\i@  
} 3f:]*U+O  
} 5f75r  
2o 7o~r  
} BF"eVKA  
%Rf{v5  
Shell排序: u3DFgl3-7  
g@ ]1H41  
package org.rut.util.algorithm.support; }a%Wu 7D  
kmt+E'^]  
import org.rut.util.algorithm.SortUtil; Kr`.q:0GK  
ca[*#xiJ  
/** VeH%E.:  
* @author treeroot .5tXwxad"  
* @since 2006-2-2 '=d y =  
* @version 1.0 P<9T.l  
*/ )=5*iWe  
public class ShellSort implements SortUtil.Sort{ RK_z!%(P  
-$kbj*b##  
/* (non-Javadoc) k8cR`5 @PK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5nK|0vv%2  
*/ 89W8cJ$yW  
public void sort(int[] data) {  h}}7_I9  
for(int i=data.length/2;i>2;i/=2){ QwuSo{G  
for(int j=0;j insertSort(data,j,i); Ko "JH=<  
} \?^ EFA+;  
} S)"vyGv  
insertSort(data,0,1); TC ;Aj|)N  
} [7[$P.MS{  
uL^X$8K;(  
/** \\ZhM  
* @param data UM'JK#P"  
* @param j . :(gg  
* @param i MW0CqMi]T  
*/ 1Sv$!xX`n  
private void insertSort(int[] data, int start, int inc) { 1M[|9nWUC  
int temp; \_+Af`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7j"B-k#  
} F^!mgU X  
} 5!6}g<z&L  
} f%REN3=5K  
_HAr0R8BY  
} ke'OT>8  
}-&#vP~I  
快速排序: wD@ wOC  
$:?=A5ttuo  
package org.rut.util.algorithm.support; %F<3_#Y  
@d|]BqQ4jh  
import org.rut.util.algorithm.SortUtil; !DKl:8mx4  
Y1BxRd?D  
/** fi6_yFl  
* @author treeroot z7a @'+'  
* @since 2006-2-2 XLm@, A[  
* @version 1.0 " j:15m5  
*/ 5jTA6s9zA  
public class QuickSort implements SortUtil.Sort{ d"+ _`d=`  
:m("oC@}  
/* (non-Javadoc) Tn$| Xa+:s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NE Z ]%  
*/ w aDJ  
public void sort(int[] data) { |8\et  
quickSort(data,0,data.length-1); h5))D!  
} +:z%#D  
private void quickSort(int[] data,int i,int j){ y|WOw(#  
int pivotIndex=(i+j)/2; [U{RDX  
file://swap 'b_SQ2+A  
SortUtil.swap(data,pivotIndex,j); *Oy%($'  
A^F0}MYT  
int k=partition(data,i-1,j,data[j]); +jp^  
SortUtil.swap(data,k,j);  ur k@v  
if((k-i)>1) quickSort(data,i,k-1); Ki3 wqY  
if((j-k)>1) quickSort(data,k+1,j); 92*Y( >  
MO79FNH2\  
} %5 <t3 H"  
/** 2f 9%HX(5  
* @param data &oDu$%dkT  
* @param i 1:"ZS ]i  
* @param j  TJb&f<  
* @return !i=k=l=  
*/ ,Lw '3  
private int partition(int[] data, int l, int r,int pivot) { >Wj8[9zf  
do{ 2K2jko9'a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); l" H/PB<.  
SortUtil.swap(data,l,r); }iR!uhi#  
} l,Ixz1S3e  
while(l SortUtil.swap(data,l,r); p*=9Ea:  
return l; a#,lf9M  
} yy\d<-X~  
6EG`0h6  
} x 0L,$Ol  
e1K{*h  
改进后的快速排序: bJ6v5YA%  
iS28p  
package org.rut.util.algorithm.support; }5ONDg(I~  
\Eyy^pb  
import org.rut.util.algorithm.SortUtil; hfQ^C6yR  
wW^3/  
/** .fS1  
* @author treeroot Lmyw[s\U  
* @since 2006-2-2 1 BVpv7@  
* @version 1.0 No)@#^  
*/ f@IL2DL}\  
public class ImprovedQuickSort implements SortUtil.Sort { GSg/I.)S  
:*lB86Ly  
private static int MAX_STACK_SIZE=4096; -Cf< #'x_  
private static int THRESHOLD=10; YZ+<+`Mz<  
/* (non-Javadoc) vlZ?qIDe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K 7d]p0d'  
*/ j'FBt8P'  
public void sort(int[] data) { TM$`J  
int[] stack=new int[MAX_STACK_SIZE]; )TgjaR9G  
ZlYb8+rW  
int top=-1; iI%"]- 0@1  
int pivot; <}Rr C#uiA  
int pivotIndex,l,r; ^VB_>|UN4  
"8`f x  
stack[++top]=0; Z9 tjo1X  
stack[++top]=data.length-1; XAc#ywophi  
}^B=f_Ag  
while(top>0){ F!yejn [  
int j=stack[top--]; ?gOZY\[ma  
int i=stack[top--]; .e%B'  
U}<;4Px]7v  
pivotIndex=(i+j)/2; <rFY$ ?x  
pivot=data[pivotIndex]; 2qUC@d<K  
>=Un=Q%  
SortUtil.swap(data,pivotIndex,j); g\ p;  
eVbaxL!Q^  
file://partition HzF]hm,  
l=i-1; D'+kzb@  
r=j; vc(6lN9>  
do{ q9c:,k  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [.`#N1-@M  
SortUtil.swap(data,l,r); nA^UF_rD-  
} ~4+=C\r  
while(l SortUtil.swap(data,l,r); {EGm6WSQ^  
SortUtil.swap(data,l,j); w`J s "_\  
&/A?*2  
if((l-i)>THRESHOLD){ n,NKJt  
stack[++top]=i; *.0#cP7 "  
stack[++top]=l-1; c~+l|r=u?  
} ^+ +ec>  
if((j-l)>THRESHOLD){ bI~(<-S~K  
stack[++top]=l+1; .pQ4#AJ  
stack[++top]=j; &llp*< i7  
} 9rsty{J8  
Af>Ho"i  
} `$D2w|  
file://new InsertSort().sort(data); X6]eQ PN2  
insertSort(data); 3YF*TxKx  
} 2@S{e$YK`  
/** CvtG  
* @param data ,-*oc>  
*/ ZKa.MBde  
private void insertSort(int[] data) { ef=LPCi?  
int temp; VZ8HnNAbX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )/F1,&/N`e  
} @cZNoD  
} Yxt`Uvc(^h  
} SD^6ib/]b  
xI7; (o"  
} P=V=\T<4_  
)0JXUC e  
归并排序: :kDHwYv$  
RHGs(d7-  
package org.rut.util.algorithm.support; 438+ zU  
tA2I_W Cl  
import org.rut.util.algorithm.SortUtil; -\!"Kz/  
+;Jb)8  
/** v/BMzVi  
* @author treeroot  w|>O!]K]  
* @since 2006-2-2 &dkjT8L$  
* @version 1.0 \{G1d"n  
*/ @iwg`j6ol  
public class MergeSort implements SortUtil.Sort{ czf|c  
gs_nUgcA  
/* (non-Javadoc) }*4K]3et$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tc@([XqH  
*/ ?B2 T'}~  
public void sort(int[] data) { vH+QI  
int[] temp=new int[data.length]; 6 ztM(2[  
mergeSort(data,temp,0,data.length-1); <Vk^fV  
} )MZQ\8,)]  
fr%}|7  
private void mergeSort(int[] data,int[] temp,int l,int r){ KS/1ux4x  
int mid=(l+r)/2; wU#79:h  
if(l==r) return ; n^;:V8k  
mergeSort(data,temp,l,mid); "1H?1"w~  
mergeSort(data,temp,mid+1,r); nkp!kqJ09  
for(int i=l;i<=r;i++){ t YmR<^  
temp=data; ?2;r#)  
} X#mppMU  
int i1=l; d aIt `}s  
int i2=mid+1; lk6*?EJ  
for(int cur=l;cur<=r;cur++){ SPxgIP;IR  
if(i1==mid+1) NGlX%j4j  
data[cur]=temp[i2++]; AoEG%nT  
else if(i2>r) AopC xaJ`  
data[cur]=temp[i1++]; X'Dg= |  
else if(temp[i1] data[cur]=temp[i1++]; EF?@f{YY$n  
else EwcN$Ma  
data[cur]=temp[i2++]; 4w:_4qyb  
} UJ_E&7,L  
} HKk;oG  
Y zXL8  
} 37wm[ Z  
Z;aQ/ n[`  
改进后的归并排序: I% 43rdoPe  
+1 H.5|  
package org.rut.util.algorithm.support; ^<R*7mB*  
!+4}x;!8  
import org.rut.util.algorithm.SortUtil; _W4i?Bde  
\$2E  
/** Kv[,!P"Y  
* @author treeroot gg(^:`+  
* @since 2006-2-2 *BYSfcX6  
* @version 1.0 z6 v RTY  
*/ Eoug/we  
public class ImprovedMergeSort implements SortUtil.Sort { ee]PFW28  
MX 2UYZ&  
private static final int THRESHOLD = 10; 'Lft\.C  
EnJAHgRV;e  
/* jZcjiOX  
* (non-Javadoc) ?]081l7cd  
* CE>RAerY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1o7 pMp=  
*/ /H=fK  
public void sort(int[] data) { )FM/^  
int[] temp=new int[data.length]; 3VbQDPG  
mergeSort(data,temp,0,data.length-1); ip4:px-  
} 2P8JLT*Tj  
ur-&- G^  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1%|+yu1  
int i, j, k; ^{["]!f#  
int mid = (l + r) / 2; B&_62`  
if (l == r) `?PZvGi  
return; $WvI%r  
if ((mid - l) >= THRESHOLD) '}*5ee](S  
mergeSort(data, temp, l, mid); rp.S4;=Q9  
else |lIkmW{  
insertSort(data, l, mid - l + 1); ~a8J"Wh  
if ((r - mid) > THRESHOLD) yOGa W~  
mergeSort(data, temp, mid + 1, r); KL!k'4JNY  
else P8e1J0A  
insertSort(data, mid + 1, r - mid); [1'`KJ]  
x2.G1  
for (i = l; i <= mid; i++) { e =Vu;  
temp = data; EVMhc"L  
} ,b=&iDc  
for (j = 1; j <= r - mid; j++) { S=^yJ6 xJ  
temp[r - j + 1] = data[j + mid]; p%CAicn  
} G8@({EY  
int a = temp[l]; %O;"Z`I  
int b = temp[r]; iLn)Z0<\o  
for (i = l, j = r, k = l; k <= r; k++) { b7{)B?n  
if (a < b) { ="RDcf/  
data[k] = temp[i++]; Dg/&m*Yl  
a = temp; L@w|2  
} else { AZxx%6  
data[k] = temp[j--]; oYnA 3  
b = temp[j]; _/ZIDIn  
} 'MPt K  
} 8zGe5Dn9  
} 'i_od|19~h  
k/O|ia 6  
/** =Z iyT$p  
* @param data ; )O)\__"-  
* @param l B=#rp*vwL  
* @param i X3I\O,"I  
*/ zTBr<:  
private void insertSort(int[] data, int start, int len) { <DiD8")4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); N VzR2  
} e~c;wP~cO  
} v I@Wuu:  
} ?7^H1L  
} ePK^v_vBD  
H^p ?t=Y  
堆排序: Ooz+V;#Q  
QP)-O*+AA  
package org.rut.util.algorithm.support; ',`iQt!Lx  
1b E$x^P  
import org.rut.util.algorithm.SortUtil; G5E03xvL  
JJq= {;  
/** ;_M .(8L  
* @author treeroot n[CESo%[  
* @since 2006-2-2 ~qLbyzHaB  
* @version 1.0 I)V2cOrXM  
*/ p8Di9\}  
public class HeapSort implements SortUtil.Sort{ Ec[=~>;n{l  
qi}HJkOq  
/* (non-Javadoc) R{5Qb?&wOp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V#^~JJW^  
*/ FD*`$.e3\  
public void sort(int[] data) { (tP>z+  
MaxHeap h=new MaxHeap(); .GM&]Hb  
h.init(data); x:O?Fj  
for(int i=0;i h.remove(); .t4IR =Z  
System.arraycopy(h.queue,1,data,0,data.length); bgqN&J)Jr)  
} QS,IM >Nr  
\CM(  
private static class MaxHeap{ (ta!4h,  
bqN({p&  
void init(int[] data){ xIf,1g@Cq9  
this.queue=new int[data.length+1]; 1[C,*\X8v  
for(int i=0;i queue[++size]=data; j./3)  
fixUp(size); ~K 8eRT  
} .JZoZ.FAb  
} `{CaJ6.  
%+i g7a:  
private int size=0; sAfSI<L_  
<w(UDZ  
private int[] queue; ;#P@(ZVT  
"X g@X5BG  
public int get() { m'XzZmI  
return queue[1]; Hu|NS{Ke-  
} R{\vOw:*  
C;}~C:aJ  
public void remove() { +|).dm  
SortUtil.swap(queue,1,size--); E:T<mI?d  
fixDown(1); {N[IjY  
} 9kuL1tcY  
file://fixdown XL>Vwd  
private void fixDown(int k) { u^|XQWR$:  
int j; @>B#2t&  
while ((j = k << 1) <= size) { cBBc^SR  
if (j < size %26amp;%26amp; queue[j] j++; /$'tO3  
if (queue[k]>queue[j]) file://不用交换 (]^9>3{|  
break; $)vljM<<  
SortUtil.swap(queue,j,k); FF6[qSV  
k = j; |8 c3%jve  
} o*eU0  
} }H!c9Y  
private void fixUp(int k) { 4K[E3aA  
while (k > 1) { a[]=*(AZI  
int j = k >> 1; <s2IC_f<+  
if (queue[j]>queue[k]) Bjq1za  
break; O9oYuC:q  
SortUtil.swap(queue,j,k); ?P ,z^  
k = j; ;RB]awE  
} (Ybc~M)z  
} 3_~V(a  
Ovv~ymj  
} @bOhnd#W  
EA|*|o4)  
} %RG kXOgp  
cjHo?m'  
SortUtil: QUVwO m  
z J93EtlF  
package org.rut.util.algorithm; d5fnJ*a>l  
fAm^-uq[  
import org.rut.util.algorithm.support.BubbleSort; !fZ\GOx  
import org.rut.util.algorithm.support.HeapSort; rQ(Aj  
import org.rut.util.algorithm.support.ImprovedMergeSort; =21$U[  
import org.rut.util.algorithm.support.ImprovedQuickSort; |Nd!+zE$Z  
import org.rut.util.algorithm.support.InsertSort; qxf!]jm  
import org.rut.util.algorithm.support.MergeSort; EeG7 %S 5(  
import org.rut.util.algorithm.support.QuickSort; & V^ Z  
import org.rut.util.algorithm.support.SelectionSort; H)}>&Z4  
import org.rut.util.algorithm.support.ShellSort; cKdn3 2Y4  
rE;*MqYt&  
/** yhJH3<  
* @author treeroot F$ShhZgi  
* @since 2006-2-2 V$VqYy9 *  
* @version 1.0 ?>cx; "xF  
*/ LdwWB `L  
public class SortUtil { I?uU }NK  
public final static int INSERT = 1; >0Y >T6!  
public final static int BUBBLE = 2; zUXQl{  
public final static int SELECTION = 3; I'HPy.PV  
public final static int SHELL = 4; Zy|B~.@<j  
public final static int QUICK = 5; D+P(  
public final static int IMPROVED_QUICK = 6; j uG?kL.  
public final static int MERGE = 7; }pdn-#  
public final static int IMPROVED_MERGE = 8; H<#M)8  
public final static int HEAP = 9; bGOOC?[UX  
/W1!mih  
public static void sort(int[] data) { t6m3lq{  
sort(data, IMPROVED_QUICK); Bha#=>4FU  
} '#!nK O2<  
private static String[] name={ K'%2'd  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" zsFzF`[k  
}; xHq"1Vs=  
"XfCLc1 T  
private static Sort[] impl=new Sort[]{ kd)Q$RA(  
new InsertSort(), >lQ@" U  
new BubbleSort(), c[J?`8  
new SelectionSort(), gI "ZhYI  
new ShellSort(), 4l7TrCB  
new QuickSort(), bc=,$  
new ImprovedQuickSort(), g5M=$y/H  
new MergeSort(), g"ha1<y<  
new ImprovedMergeSort(), r*HbglB  
new HeapSort() #%N v\ g;  
}; p4GhT~)l:  
Z^E>)!t  
public static String toString(int algorithm){ #V&98 F  
return name[algorithm-1]; ?g^42IYG  
} =!)Ye:\Q  
)UbPG`x8  
public static void sort(int[] data, int algorithm) { TwlX'iI_;  
impl[algorithm-1].sort(data); 7'Z-VO  
} YbtsJ <w  
g xY6M4  
public static interface Sort { 3}dTbr4y  
public void sort(int[] data); i0Ejo;dB  
} Su?e\7aj  
[p3{d\=*?  
public static void swap(int[] data, int i, int j) { uP, iGA  
int temp = data; })W9=xO~  
data = data[j]; <|Srbs+  
data[j] = temp; 7]W6\Z  
} (rqc_ZU5  
} 7OAM  
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