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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。 h1^9tz{  
插入排序: |5 oKq'(b  
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package org.rut.util.algorithm.support; Y!++C MzU  
Y<p zy8z  
import org.rut.util.algorithm.SortUtil; pu/m8  
/** <a8#0ojm  
* @author treeroot WF ?/GN  
* @since 2006-2-2 T!u'V'Ei2  
* @version 1.0 qDby!^ryc  
*/ a. h?4+^bN  
public class InsertSort implements SortUtil.Sort{ S2J#b"Y  
CrnB{Z4L  
/* (non-Javadoc) G$;>ueM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g2g`,"T  
*/ X'V+^u@W  
public void sort(int[] data) { sg3h i"Im  
int temp; N<KKY"?I'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {PN:bb  
} \We"?1^  
} 98ca[.ui  
} 6#E]zmXO2  
K#GXpj  
} |7rR99  
!( kX~S  
冒泡排序: Bz~ -2#l  
6RK ~Dl&g  
package org.rut.util.algorithm.support; (bg}an  
kRmj"9oA  
import org.rut.util.algorithm.SortUtil; #V<`U:.  
n_<mPU  
/** eQ$N:]  
* @author treeroot '"oo;`g7  
* @since 2006-2-2 yJnPD/i  
* @version 1.0 @4;HC=~  
*/ pG0!ALT  
public class BubbleSort implements SortUtil.Sort{ %lXbCE:[  
C= >B_EO  
/* (non-Javadoc) fH-NU-"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (l Lu?NpIi  
*/ ^fkCyE;=  
public void sort(int[] data) { M6# \na  
int temp; 'b8R#R\P  
for(int i=0;i for(int j=data.length-1;j>i;j--){ @(Z( /P;:  
if(data[j] SortUtil.swap(data,j,j-1); M[A-1]'  
} Oc7 >S.1  
} 3"5.eZSOW  
} a*V9_Px$&  
} g<f P:/  
p?Z(rCp  
} 'KSa8;:=C  
.FuA;:@%\  
选择排序: a lrt*V|=  
$9G3LgcS  
package org.rut.util.algorithm.support; O'fk&&l  
|-|jf  
import org.rut.util.algorithm.SortUtil; "hW(S  
Z,3 CC \  
/** <lFdexH"T  
* @author treeroot ]x2Jpk99a  
* @since 2006-2-2 ~NxEc8Y  
* @version 1.0 !&W|myN^  
*/ ~ 9=27 p  
public class SelectionSort implements SortUtil.Sort { 3Q",9(D  
h9)RJSF4  
/* F@9Y\. ,  
* (non-Javadoc) pqJ)G;%9  
* d5Qd'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `"B^{o  
*/ Y=9j2 ]t  
public void sort(int[] data) { 4KE)g  
int temp; UIn^_}jF`  
for (int i = 0; i < data.length; i++) { 0Su_#".-*  
int lowIndex = i; oB4#J*   
for (int j = data.length - 1; j > i; j--) { .vK.XFZ8R  
if (data[j] < data[lowIndex]) { qh$X^%g  
lowIndex = j; c )03Ms4 D  
} _D-5}a"  
} 3g;T?E  
SortUtil.swap(data,i,lowIndex); )`<6taKx@n  
} @YCv  
} #'C/Gya  
~^x-ym5  
} )U'yUUi  
n? ]f@OR  
Shell排序: !Vb,zQ  
3EmcYC  
package org.rut.util.algorithm.support; D{R/#vM jk  
@m?{80;uQ  
import org.rut.util.algorithm.SortUtil; A';n6ne%i  
' X}7]y  
/** Pw= 3PvkL  
* @author treeroot i *B:El1  
* @since 2006-2-2 b{BaQ>.(`  
* @version 1.0 K}Na3}m  
*/ rhIGOk1k  
public class ShellSort implements SortUtil.Sort{ ]/_G-2.R  
~6kJ~R4  
/* (non-Javadoc) [%jxf\9jJ_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FOSbe]  
*/ AeaPK  
public void sort(int[] data) { kQ~ %=pn  
for(int i=data.length/2;i>2;i/=2){ Q3,=~}ZNK  
for(int j=0;j insertSort(data,j,i); 8[M* x3  
} 9\>sDSCx  
} !y%+GwoW  
insertSort(data,0,1); 6Hwxx5>r  
} _jmkl B  
"7d.i(vw  
/** /1[gn8V691  
* @param data 0V3gKd7  
* @param j EI\v  
* @param i XCm\z9F  
*/ =-qf;5[|  
private void insertSort(int[] data, int start, int inc) { q`[K3p   
int temp; [fxuUmU  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); q3)wr%!k5D  
} k}zd' /b  
} \B&6TeR  
} Xem5@ (u  
e />:K' {  
} qOi5WX6F/  
GmbIFOT~  
快速排序: # kEOKmO  
[sj VRW-  
package org.rut.util.algorithm.support; G'9{a'  
/l6\^Xf{  
import org.rut.util.algorithm.SortUtil; H|`R4hAk  
Yx),6C3  
/** ?q!FG(  
* @author treeroot _88QgThb  
* @since 2006-2-2 Y\p $SN  
* @version 1.0 8R}K?+]  
*/ @!<d0_dnC  
public class QuickSort implements SortUtil.Sort{ V&[eSVY?  
f05=Mc&)  
/* (non-Javadoc) x'qWM/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z]$>+MH_  
*/ ?'w sIH]m  
public void sort(int[] data) { Vho0e V=  
quickSort(data,0,data.length-1); @KA1"Wb_  
} k" YHsn  
private void quickSort(int[] data,int i,int j){ DbtF~`3, .  
int pivotIndex=(i+j)/2; 5V@&o`!=h  
file://swap s}ADk-7  
SortUtil.swap(data,pivotIndex,j); @rwU 1T33  
xGRT"U(  
int k=partition(data,i-1,j,data[j]); W2eAhz&  
SortUtil.swap(data,k,j); ~@Kf2dHes  
if((k-i)>1) quickSort(data,i,k-1);  so fu  
if((j-k)>1) quickSort(data,k+1,j); _]=9#Fg7{  
CZ3].DA|z  
} 9!}q{2j  
/** Pz@/|&]  
* @param data `(DJs-xD  
* @param i bxwkTKr'  
* @param j  s4$X  
* @return /.$L"u  
*/ ^PqMi:htc  
private int partition(int[] data, int l, int r,int pivot) { iCrxV{   
do{ #6W,6(#^#  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); w<t,j~ Pr#  
SortUtil.swap(data,l,r); {155b0  
} .GCR!V  
while(l SortUtil.swap(data,l,r); WeC(w+}p  
return l; w!`Umll2  
} iYKU[UP?  
`*yAiv>  
} U -EhPAB@  
"K?Q  
改进后的快速排序: 0pN{y}x,  
b/<mRQ{  
package org.rut.util.algorithm.support; [AR>?6G-  
K\&o2lo]  
import org.rut.util.algorithm.SortUtil; r5 yO5W  
|s=`w8p  
/** z(H?VfJo  
* @author treeroot q4ipumy*  
* @since 2006-2-2 l}}UFEA^  
* @version 1.0 l>&sIX  
*/ _]|Qec)  
public class ImprovedQuickSort implements SortUtil.Sort { =_PvrB2'  
qC@Ar)T  
private static int MAX_STACK_SIZE=4096; =g~j=v ,e  
private static int THRESHOLD=10; UFENy."P  
/* (non-Javadoc) S|K}k:v8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A#DR9Eq  
*/ %0XvJF)s  
public void sort(int[] data) { KDey(DN:  
int[] stack=new int[MAX_STACK_SIZE]; "8(U\KaX  
+\`rmI  
int top=-1; 6GINmkA  
int pivot; 6t}XJB$+7  
int pivotIndex,l,r; 2dbRE:v5  
6I|A- h  
stack[++top]=0; {/}^D-  
stack[++top]=data.length-1; B~TN/sd  
@6&JR<g*t  
while(top>0){ {TAw)!R~  
int j=stack[top--]; \%5MAQS  
int i=stack[top--]; H}nJbnU  
AhxGj+  
pivotIndex=(i+j)/2; nl n OwyMJ  
pivot=data[pivotIndex]; #w>~u2W  
9.&mz}q  
SortUtil.swap(data,pivotIndex,j); f z}?*vPW  
>I<PO.c!  
file://partition G7-!`-Nk  
l=i-1; - k`.j  
r=j; "C74  
do{ =|SdVv   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 4# )6.f~  
SortUtil.swap(data,l,r); &ao(!/im  
} MzTW8  
while(l SortUtil.swap(data,l,r); ;>ozEh#8w  
SortUtil.swap(data,l,j); s".HEP~]=  
,W*H6fw+  
if((l-i)>THRESHOLD){ 1 Z[f {T)  
stack[++top]=i; kMxjS^fr  
stack[++top]=l-1; Gvx[ 8I  
} ^Mytp>7  
if((j-l)>THRESHOLD){ FtIa*j^G  
stack[++top]=l+1; p2d\ZgWD=)  
stack[++top]=j; ZK !A#Jm{  
} T20VX 8gX  
R^8{bP  
} ^}>/n. %  
file://new InsertSort().sort(data); zY%. Rq-  
insertSort(data); _H\<[-l  
} 3?E}t*/  
/** dGkg aC+  
* @param data 97LpY_sU  
*/ P} r)wAt  
private void insertSort(int[] data) { h6M;0_'  
int temp; \Tm}mAvK/o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); SY _='9U  
} o""~jc~  
} KCtX $XGL  
} u \g ,.C0  
.\)A@ua^  
} 6 hiC?2b{x  
h$fe -G#  
归并排序: vVVPw?Ww-  
j[e,?!8;  
package org.rut.util.algorithm.support; ;BBpN`T  
'^}+Fv<O  
import org.rut.util.algorithm.SortUtil; yV]xRaRr2  
R$6qoqv{yG  
/** }5bM1h#z  
* @author treeroot +nU.p/cK+\  
* @since 2006-2-2 u#jC#u^M  
* @version 1.0 &u8z5pls8  
*/ {#hVD4$b  
public class MergeSort implements SortUtil.Sort{ E%3TP_B3  
wahZK~,EaY  
/* (non-Javadoc) rFu ez$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K=\&+at1  
*/ Ijedo/  
public void sort(int[] data) { 8^ #mvHah  
int[] temp=new int[data.length]; j_Nm87i]  
mergeSort(data,temp,0,data.length-1); n1J]p#nCa.  
} `X8@/wf#  
fRHKQ(a#  
private void mergeSort(int[] data,int[] temp,int l,int r){ tXq)nfGe{  
int mid=(l+r)/2; !OE*z $\  
if(l==r) return ; FPv" N'/  
mergeSort(data,temp,l,mid); l(:kfR~AC  
mergeSort(data,temp,mid+1,r); 2\@Z5m3B  
for(int i=l;i<=r;i++){ Y &f\VNlT  
temp=data; 6|=j+rScv  
} :zp`6l  
int i1=l; "H+,E_&(  
int i2=mid+1; .v])S}K  
for(int cur=l;cur<=r;cur++){ _\zQ"y|G  
if(i1==mid+1) PT_KXk  
data[cur]=temp[i2++]; `W5-.Tv  
else if(i2>r) h;M3yTM-  
data[cur]=temp[i1++]; IeTdN_8  
else if(temp[i1] data[cur]=temp[i1++]; jw>h k  
else jk7 0u[\  
data[cur]=temp[i2++]; nk@atK,38^  
} C/@LZ OEL  
} 77,oPLSn  
eN>0wd5{L  
} p,!$/Q+l  
8OFj0S1r`  
改进后的归并排序: \:_3i\2p  
4^Rd{'mt  
package org.rut.util.algorithm.support; 1{PG>W  
i*[n{=*l@  
import org.rut.util.algorithm.SortUtil; < n?=|g  
l*}FXL  
/** dt,3"J  
* @author treeroot &t}?2>:  
* @since 2006-2-2 \~DM   
* @version 1.0 gPXa>C  
*/ 2U$"=:Cf  
public class ImprovedMergeSort implements SortUtil.Sort { k&6I f0i  
2}WDw>V  
private static final int THRESHOLD = 10; {ERMGd6Jp  
ZFn(x*L  
/* 0Y+FRB ]u  
* (non-Javadoc) ${r[!0|   
* PlxIf  L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "&o,yd%  
*/ 2xxB\J  
public void sort(int[] data) { ;)hw%Z]Jj$  
int[] temp=new int[data.length]; K~6e5D7.  
mergeSort(data,temp,0,data.length-1); 3vic(^Qh  
} F jrINxL7^  
AR&:Q4r|  
private void mergeSort(int[] data, int[] temp, int l, int r) { DSyXr~p8  
int i, j, k; X_TiqV  
int mid = (l + r) / 2; NC"yDWnO'  
if (l == r) rpV1y$n<F  
return; ?u$u?j|N  
if ((mid - l) >= THRESHOLD) L'A)6^d@S  
mergeSort(data, temp, l, mid); Y "jE'  
else b]fzRdhl  
insertSort(data, l, mid - l + 1); L36Yx7gT<  
if ((r - mid) > THRESHOLD) [ !%R#+o=F  
mergeSort(data, temp, mid + 1, r); u'5`[U -!  
else 2Aq~D@,9=:  
insertSort(data, mid + 1, r - mid); N/F$bv  
h0|}TV^UJ  
for (i = l; i <= mid; i++) { l* dV\ B  
temp = data; vZAv_8S)  
} O[q\e<V<  
for (j = 1; j <= r - mid; j++) { VG@};dwbz*  
temp[r - j + 1] = data[j + mid]; 6[P-Ny{z  
} 6^F '|Wh  
int a = temp[l]; kdrod[S  
int b = temp[r]; U.oksD9 v  
for (i = l, j = r, k = l; k <= r; k++) { _t>"5s&i  
if (a < b) { )}lRd#V  
data[k] = temp[i++]; ^))RM_ic  
a = temp; p<GR SJIk=  
} else { !PUZWO  
data[k] = temp[j--]; X&\d)/Y  
b = temp[j]; kI\tqNJi  
} J./d!an  
} ~}9PuYaD@  
} #2p#VQh  
lFG9=Wf  
/** Y%`SHe7M  
* @param data 1T|$BK@)  
* @param l 4`v!Z#e/aX  
* @param i LDj<?'  
*/ oOU1{[  
private void insertSort(int[] data, int start, int len) { Pcd *">v  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 0~WF{_0|  
} J5p8nmb  
} &l2TeC@;  
} .TB"eUy  
} \_]En43mg  
H=c`&N7E  
堆排序: ;O#g"8  
cu9Qwm  
package org.rut.util.algorithm.support; _S?qDG{E|  
n> w`26MMp  
import org.rut.util.algorithm.SortUtil; qa'gM@]  
PR7f(NC  
/** >4i>C  
* @author treeroot 1} m3 ;  
* @since 2006-2-2 IVvtX}  
* @version 1.0 -yH,5vD  
*/ UXr5aZ7y  
public class HeapSort implements SortUtil.Sort{ S6i@"h5  
}^ FulsC  
/* (non-Javadoc) l$Gl'R>>*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QV|>4^1D  
*/ 1+kE!2b;b  
public void sort(int[] data) { C"uahP[Y  
MaxHeap h=new MaxHeap();  Gs0H@  
h.init(data); _'0 @%P%  
for(int i=0;i h.remove(); X"asfA[6K  
System.arraycopy(h.queue,1,data,0,data.length); },-*  
} Tenf:Hm/k  
q3e8#R)l  
private static class MaxHeap{ } (FPV*mS  
r`'y?Bra;  
void init(int[] data){ R=)55qu  
this.queue=new int[data.length+1]; wD \ZOn_J  
for(int i=0;i queue[++size]=data; f>9s!Hpu_  
fixUp(size); ?? qq:`s  
} k)\gWPH  
} %CnxjtTo  
OEhHR  
private int size=0; W#w.h33)#6  
Do7=#|bAM  
private int[] queue; Vzlh+R>c  
uBnoQ~Qd[z  
public int get() { K!z`  
return queue[1]; kQ>^->w  
} AC%JC+  
MHj,<|8Q  
public void remove() { |pZUlQbb  
SortUtil.swap(queue,1,size--); m"2d$vro"  
fixDown(1); (K..k-o`.  
} E)N<lh  
file://fixdown 8AFczeg[[  
private void fixDown(int k) { 3)Ac"nuyqH  
int j; O~Wt600{E  
while ((j = k << 1) <= size) { s Kicn5  
if (j < size %26amp;%26amp; queue[j] j++; T Eu'*>g  
if (queue[k]>queue[j]) file://不用交换 /1w2ehE<  
break; :\ QUs}  
SortUtil.swap(queue,j,k); ?*"srE,#JX  
k = j; 4$6T+i2E   
} is^pgKX  
} b-5y9K  
private void fixUp(int k) { s0u{d qP  
while (k > 1) { F _3:bX  
int j = k >> 1; AvJ,SQt  
if (queue[j]>queue[k]) gN6rp(?y  
break; X"MU3]  
SortUtil.swap(queue,j,k); ->{d`-}m'  
k = j; <W)u{KS#TY  
} A=5epsB  
} q%YV$$c   
R,2P3lv1v@  
} nR;D#"p%  
Ddju~510  
} 25y6a|`  
Ucw yxX I  
SortUtil: _Xcn N:Rt  
`YBkF  
package org.rut.util.algorithm; Y4.Eq+$gh  
GwU?wIIj^  
import org.rut.util.algorithm.support.BubbleSort; 9O*_L:4o  
import org.rut.util.algorithm.support.HeapSort; 8|?LN8rp  
import org.rut.util.algorithm.support.ImprovedMergeSort; &^&zR(o`  
import org.rut.util.algorithm.support.ImprovedQuickSort; +UN<Zp7I/  
import org.rut.util.algorithm.support.InsertSort; 24c ek  
import org.rut.util.algorithm.support.MergeSort; Ey[On^$  
import org.rut.util.algorithm.support.QuickSort; F/d7q%I  
import org.rut.util.algorithm.support.SelectionSort; ~V=<3X  
import org.rut.util.algorithm.support.ShellSort; B@YyQ'  
#K\?E.9h  
/** R<ND=[}s  
* @author treeroot ^eYqll/U  
* @since 2006-2-2 @F*wg  
* @version 1.0 fl\aqtF  
*/ J8a*s`ik  
public class SortUtil { 'J)2g"T@  
public final static int INSERT = 1; P,DC7\  
public final static int BUBBLE = 2; BG&cQr  
public final static int SELECTION = 3; <+j)P4O4  
public final static int SHELL = 4; penlG36Q  
public final static int QUICK = 5; [%A4]QzWh  
public final static int IMPROVED_QUICK = 6; ?(6mVyIe  
public final static int MERGE = 7; C#V ~Y  
public final static int IMPROVED_MERGE = 8; /Dt d#OAdr  
public final static int HEAP = 9; MTGiAFE  
"L&'Fd@ZU  
public static void sort(int[] data) { :wqC8&V  
sort(data, IMPROVED_QUICK); F|bYWYED;  
} ikBYd }5  
private static String[] name={ G$zL)R8GE|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f$HH:^#  
}; YZ$ZcfXDW  
1k%k`[VC  
private static Sort[] impl=new Sort[]{ 0yM[Z':i'{  
new InsertSort(), bAk&~4Y_"  
new BubbleSort(), C#;jYBtT7?  
new SelectionSort(), b#)U UGmI  
new ShellSort(), g?v\!/~(u  
new QuickSort(), ?jQ](i&  
new ImprovedQuickSort(), :p&!RI(l  
new MergeSort(), W=B"Q qL  
new ImprovedMergeSort(), AwUi+|7r])  
new HeapSort() RZp cXv  
}; <N,)G |&  
DHC+C4  
public static String toString(int algorithm){ f;SC{2f  
return name[algorithm-1]; H1" q  
} DciwQcG  
hG~reVNf  
public static void sort(int[] data, int algorithm) { @Y,7'0U  
impl[algorithm-1].sort(data); hJz):d>Im  
} dx*qb  
YNrp}KQ  
public static interface Sort { J/!cGr( B~  
public void sort(int[] data);  h_d+$W5  
} ]'~vI/p  
c)md  
public static void swap(int[] data, int i, int j) { $/1c= Y@  
int temp = data; f&,{XZ  
data = data[j]; 60=m  
data[j] = temp; >evS} O6  
} l%R50aL  
} x_!0.SU  
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