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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。 n aB`@  
插入排序: 0ud>oh4WPR  
2w? 5vSv  
package org.rut.util.algorithm.support; OLM}en_L  
0] $5jW6]  
import org.rut.util.algorithm.SortUtil; /N82h`\n  
/** 0I@Cx {$  
* @author treeroot meNz0ve  
* @since 2006-2-2 +zn207 .`  
* @version 1.0 @&M$oI$4*  
*/ 0vm}[a4+i;  
public class InsertSort implements SortUtil.Sort{ JqYt^,,Q:  
n^Sc*7  
/* (non-Javadoc) f'3sT(1&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Kw ^tvRt'*  
*/ [?Ub =sp  
public void sort(int[] data) { j>t*k!db  
int temp; -S%)2(f^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *<nfA}  
} v\?J$Hdd  
} Ffp<|2T2_  
} z ''-AH,  
Um'r6ty  
} GcYT<pwN6  
gC qQ~lWZ  
冒泡排序: Jf=$h20x  
nzK"eNDN.  
package org.rut.util.algorithm.support; 3?R QPP  
'U'#_mYG  
import org.rut.util.algorithm.SortUtil; wam- =3W  
86,$ I+  
/** -P3;7_}]:h  
* @author treeroot ,dIo\Lm  
* @since 2006-2-2 ] /{987  
* @version 1.0 .}l&lj@#  
*/ `2Oh0{x0*O  
public class BubbleSort implements SortUtil.Sort{ @Ui dQX"b  
N>}2&'I  
/* (non-Javadoc) [5Dg%?x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #UpxF?A(  
*/ kGX;x}q  
public void sort(int[] data) { dECH/vJ^  
int temp; HGjGV]N5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ : 'LG%E:b  
if(data[j] SortUtil.swap(data,j,j-1); =wy3h0k^  
} H\Jpw  
} IN%04~= H  
} `e!hT@Xxa  
} w+0Ch1$  
)bG d++2  
} )4P5i b  
]XH}G9X^  
选择排序: JrdH6Zg  
)d|hIW]7(  
package org.rut.util.algorithm.support; 1#3 Qa{i  
g6. =(je  
import org.rut.util.algorithm.SortUtil; \!tS|h  
KVrK:W--p  
/** mTW@E#)n  
* @author treeroot Kc:} Ky  
* @since 2006-2-2 %g>{m2o  
* @version 1.0 pH1 9"=p<  
*/ 20t</lq.  
public class SelectionSort implements SortUtil.Sort { /:}z*a  
@Sl!p)  
/* t!Uc, mEV]  
* (non-Javadoc) 9#;UQ.qA  
* igW>C2J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3[jk}2R';p  
*/ ^:RDu q  
public void sort(int[] data) { >5jHgs#  
int temp; [}OL@num  
for (int i = 0; i < data.length; i++) { *ppb 4R;CW  
int lowIndex = i; a;A&>Ei}  
for (int j = data.length - 1; j > i; j--) { D?w-uR%Y  
if (data[j] < data[lowIndex]) { drQioH-  
lowIndex = j; d[9NNm*htC  
} ,A>i)brc  
} /e5Fx  
SortUtil.swap(data,i,lowIndex); jnoFNIW   
} q$Ol"K@  
} [i'\d}  
Z0~}'K   
} 995^[c1o6  
,K'}<dm|x  
Shell排序: y{eZrX|  
e<p_u)m  
package org.rut.util.algorithm.support; lE54RX}e4  
8bX\^&N  
import org.rut.util.algorithm.SortUtil; o^Y'e+T"  
w^*jhvV%kW  
/** '7F`qL\/#(  
* @author treeroot [)gvP'  
* @since 2006-2-2 6wWA(![w"  
* @version 1.0 k*4?fr  
*/ o4kNDXP#S  
public class ShellSort implements SortUtil.Sort{ m,u? ^W  
>oc7=F<8lS  
/* (non-Javadoc) pg~`NN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } V4"-;P  
*/ Pc]c8~  
public void sort(int[] data) { Kg@9kJB  
for(int i=data.length/2;i>2;i/=2){ n#N<zC/  
for(int j=0;j insertSort(data,j,i); |jV4]7Luq  
} dBG]J18  
}  <C4^Vem  
insertSort(data,0,1); X/1Z9 a+W  
} <EI'N0~KG  
w9}I*Nra  
/** Y5 4*mn  
* @param data rr4yJ;qpeP  
* @param j p Nu13o~  
* @param i %a/O7s6  
*/ 0zpP$q$  
private void insertSort(int[] data, int start, int inc) { ,Z%!38gGsu  
int temp; gzDb~UEoF  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 9w Kz p  
} _<.R\rX&  
} tazBZ'\c  
} _>5BFQ_  
gWS4 9*O  
} zck)D^,aO  
U2ANu|  
快速排序: LM _4.J  
&V( LeSI  
package org.rut.util.algorithm.support; YA^9, q6u?  
CSU>nIE0  
import org.rut.util.algorithm.SortUtil; :B- ,*@EU  
{uj9fE,)  
/** g{$&j*Q9  
* @author treeroot W,agP G\+  
* @since 2006-2-2 j7-#">YL  
* @version 1.0 rI]:| k  
*/ `T9<}&=!  
public class QuickSort implements SortUtil.Sort{ ]Wa,a T'  
n.l p ena  
/* (non-Javadoc) n?,fF(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bM^'q  
*/ <6apv(2a  
public void sort(int[] data) { g6W.Gl"5\w  
quickSort(data,0,data.length-1); sCb?TyN'n  
} m Xw1%w[*  
private void quickSort(int[] data,int i,int j){ k5xirB_  
int pivotIndex=(i+j)/2; n? s4"N6  
file://swap {8jG6  
SortUtil.swap(data,pivotIndex,j); Q|G[9HBI  
'`o+#\,b^%  
int k=partition(data,i-1,j,data[j]); m@c2'*&Y  
SortUtil.swap(data,k,j); w-nkf M~  
if((k-i)>1) quickSort(data,i,k-1); ^ O`  
if((j-k)>1) quickSort(data,k+1,j); 9DtSYd/  
E$G "R =  
} G>_ZUHd I  
/** &P {%C5?{  
* @param data */8\Z46z  
* @param i 50H[u|  
* @param j mI`dZ3h  
* @return ;5=pBP.  
*/ <b Ta88,)  
private int partition(int[] data, int l, int r,int pivot) { Vr0RdO  
do{ rWvJ{-%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Tf0#+6 1>  
SortUtil.swap(data,l,r); HRw,D=  
} $9J"r9@@  
while(l SortUtil.swap(data,l,r); Y0hL_46>  
return l; H{GbOI.  
} rz.`$b  
N]=.I   
} uPp(l4(+  
ohh 1DsB  
改进后的快速排序: OQsH,'  
cA Lu  
package org.rut.util.algorithm.support; RZ.5:v6  
X>wQYIi  
import org.rut.util.algorithm.SortUtil; IaF79}^  
be@MQ}6>  
/** uuC/F_='B  
* @author treeroot {jq-dL  
* @since 2006-2-2 p' gv5\u[w  
* @version 1.0 <n`|zQ  
*/ "M*\,IH  
public class ImprovedQuickSort implements SortUtil.Sort { '/p5tw8  
l`u*,"$  
private static int MAX_STACK_SIZE=4096; eeX)JC0A  
private static int THRESHOLD=10; (p2a{v}fEz  
/* (non-Javadoc) w\QpQ~OX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [,e_2<   
*/ <=`@`rm{  
public void sort(int[] data) { F% |(pHk  
int[] stack=new int[MAX_STACK_SIZE]; kR_[p._  
C'$U1%: j  
int top=-1; CRf^6k_;(  
int pivot; {M$8V~8D  
int pivotIndex,l,r; lubS{3<  
7)]G"m{  
stack[++top]=0;  +*!!  
stack[++top]=data.length-1; RcE%?2l D  
P"#^i<ut@T  
while(top>0){ Av[jFk  
int j=stack[top--]; C^~iz in  
int i=stack[top--]; ':[y]ep(~|  
](ninSX1w  
pivotIndex=(i+j)/2; X3>(K1  
pivot=data[pivotIndex]; bC{~/ JP  
&vn9l#\(  
SortUtil.swap(data,pivotIndex,j); cP Y^Bf5)  
v ;A  
file://partition I[|I\tW  
l=i-1; ["7}u^z@<+  
r=j; <*\J 6:^n  
do{ Tv KX8m"  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); aG ,uF  
SortUtil.swap(data,l,r); &V ;a:  
} =osj}(  
while(l SortUtil.swap(data,l,r); Z~R i%XG  
SortUtil.swap(data,l,j); O//e0?]W  
#-`lLI:w0  
if((l-i)>THRESHOLD){ cZ(XY}  
stack[++top]=i; "&ks8 3  
stack[++top]=l-1; g=%&p?1@E  
} v 7R&9kU{  
if((j-l)>THRESHOLD){ ^Ve^}|qPc  
stack[++top]=l+1; (1o^Dn3  
stack[++top]=j; <vrx8Q*6  
} (AS%P?  
8?$2;uGL  
} v3NaX.  
file://new InsertSort().sort(data); /IC' R"V a  
insertSort(data); Zry>s0  
} :8ZxOwwv  
/** Y `{U45  
* @param data ^/+sl-6/F  
*/ g[$B9 0  
private void insertSort(int[] data) { x<l1s  
int temp; }B5I#Af7  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )0Lq>6j9  
} 2Ar<(v$  
} f.= E.%  
} (X9V-4  
g DhwJks  
} A"'MRYT`  
=bDG|:+  
归并排序: "OPUGwf  
=~h54/#[I  
package org.rut.util.algorithm.support; ,jn?s^X6Dj  
L`#+ZLo  
import org.rut.util.algorithm.SortUtil; QJ>>&`{ ,  
a:fHTU=\p  
/** =6sXZ"_Tw  
* @author treeroot s :ruCS  
* @since 2006-2-2 J-}NFWR;t  
* @version 1.0 ~g{,W  
*/ )=D&NO67Pq  
public class MergeSort implements SortUtil.Sort{ _x!pM j(A  
w#e'K-=  
/* (non-Javadoc) [a3 0iE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (Ka# 6   
*/ CytpL`&^]  
public void sort(int[] data) { pR"qPSv'  
int[] temp=new int[data.length]; "|.(yN  
mergeSort(data,temp,0,data.length-1); Bag#An1  
} #jX>FXo  
@I&"P:E0F;  
private void mergeSort(int[] data,int[] temp,int l,int r){ QP#Wfk(C  
int mid=(l+r)/2; "7HB3?2>W  
if(l==r) return ; "" U_|JH-  
mergeSort(data,temp,l,mid); {9Y'v  
mergeSort(data,temp,mid+1,r); fDd!Mt  
for(int i=l;i<=r;i++){ <IVz mzpL  
temp=data; yShHFlO=  
} s{e(- 7'  
int i1=l; U[b;#Y1X  
int i2=mid+1; Db(_T8sU  
for(int cur=l;cur<=r;cur++){ Nz*sD^SJa  
if(i1==mid+1) au|^V^m  
data[cur]=temp[i2++]; d|]O<]CG_  
else if(i2>r) K;[%S  
data[cur]=temp[i1++]; AxlFU~E4  
else if(temp[i1] data[cur]=temp[i1++]; GYC&P]  
else #OWs3$9  
data[cur]=temp[i2++]; A[kH_{to;  
} 1>w^ q`P  
} = O1;vc}AA  
8/"|VE DOr  
} V=&,^qZ  
abeSkWUL(  
改进后的归并排序: DYlvxF`  
T-C#xmY(  
package org.rut.util.algorithm.support; toqzS!&.v  
| ",[C3Jg  
import org.rut.util.algorithm.SortUtil; OZD!#YI  
R9h>I3F=c  
/** {~fCqP.2  
* @author treeroot Cc)P5\j h  
* @since 2006-2-2 *O> aqu  
* @version 1.0 UglG!1L  
*/ A&c@8  
public class ImprovedMergeSort implements SortUtil.Sort { ]^9* t,{9  
y?n2`l7f  
private static final int THRESHOLD = 10; =`~Z@IbdI  
]"Y%M'  
/* kQVDC,d  
* (non-Javadoc) ~9r!m5ws  
* QaWHz   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $-Pqs ^g  
*/ >}b6J7_  
public void sort(int[] data) { IzdTXc f  
int[] temp=new int[data.length]; tRnW%F5  
mergeSort(data,temp,0,data.length-1); {Y91vXTz7  
} 6@q[tN7_^  
4iNbK~5j  
private void mergeSort(int[] data, int[] temp, int l, int r) { 99 "[b  
int i, j, k; hNnX-^J<o  
int mid = (l + r) / 2; pP* ~ =?  
if (l == r) rA1r#ksQ  
return; u=;nU(]M '  
if ((mid - l) >= THRESHOLD) !?o$-+a|  
mergeSort(data, temp, l, mid); ^YR|WKY  
else kq~[k.  
insertSort(data, l, mid - l + 1); 8ts+'65|F  
if ((r - mid) > THRESHOLD) vA"niO  
mergeSort(data, temp, mid + 1, r); }l( m5  
else 5!F\h'E  
insertSort(data, mid + 1, r - mid); ZBmXaP[9  
i*CQor6|z  
for (i = l; i <= mid; i++) { Tz[?gF.Do  
temp = data; kAN;S<jSE  
} eR-=<0Iw;  
for (j = 1; j <= r - mid; j++) { b"M`@';+  
temp[r - j + 1] = data[j + mid]; eh:}X}c=J]  
} 4r[pMJiq  
int a = temp[l]; :X1cA3c!  
int b = temp[r]; t {SMSp  
for (i = l, j = r, k = l; k <= r; k++) { Y^6[[vaj2  
if (a < b) { hyb +#R  
data[k] = temp[i++]; Q"|kW[Sg  
a = temp; ("E!Jyc!  
} else { ~sU?"V  
data[k] = temp[j--]; l>D-Aan  
b = temp[j]; E8-fW\!F  
} l]Ui@X  
} r jL?eTU"s  
} ZP6x  
'Z.OF5|eGT  
/** K2xH'v O(  
* @param data :YqQlr\  
* @param l 6!+X.+  
* @param i ^+*GbY$'  
*/ hB?,7-  
private void insertSort(int[] data, int start, int len) { VJN/#   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); \ I^nx+l  
} W""*hJ  
}  O[IR|  
} q*[!>\ Z8  
} 19F ;oFp  
N )zPxQ  
堆排序: U['JFLF  
T2DF'f3A  
package org.rut.util.algorithm.support; "[*S?QO(L  
/WgPXEB  
import org.rut.util.algorithm.SortUtil; =Y &9 qt  
?aFr8i:)M  
/** BFMS*t`  
* @author treeroot '7Mep ]  
* @since 2006-2-2 t/KcXM  
* @version 1.0 Ak5[PBbW  
*/ d&[iEU  
public class HeapSort implements SortUtil.Sort{ B;z;vrrL  
O`i)?BC  
/* (non-Javadoc) X!o[RJY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _BG8/"h32  
*/ &so-O90  
public void sort(int[] data) { -RG8<bI,  
MaxHeap h=new MaxHeap(); P>*Fj4 Z~  
h.init(data); 5^i.;>(b  
for(int i=0;i h.remove(); ,< @,gZru  
System.arraycopy(h.queue,1,data,0,data.length); ]<27Sw&yaG  
} 17>5#JLP  
]?0{(\  
private static class MaxHeap{ Nfv="t9e  
K,f* SXM  
void init(int[] data){ \G$QNUU  
this.queue=new int[data.length+1]; @[MO,J&h  
for(int i=0;i queue[++size]=data; (9mbF%b  
fixUp(size); {I0w`xe  
} ePp[m zg6  
} SU%mmw ES3  
#V.ZdLo(  
private int size=0; PXw| L  
[ rQMD^:M$  
private int[] queue; }#yU'#|d  
C=N! z  
public int get() { ^Xs%.`Gv/  
return queue[1]; )|y#OZHR  
} fy&#M3UA\U  
5>k>L*5J  
public void remove() { 7MY)\aH  
SortUtil.swap(queue,1,size--); b,#`n  
fixDown(1); 8y$5oD6g9  
} m</]D WJ  
file://fixdown }>2t&+v+  
private void fixDown(int k) { gaQ[3g  
int j; w{PUj  
while ((j = k << 1) <= size) { 0 _Q * E3  
if (j < size %26amp;%26amp; queue[j] j++; JXH",""bq  
if (queue[k]>queue[j]) file://不用交换 glv ;C/l  
break; ?4^} ;wDb2  
SortUtil.swap(queue,j,k); jcE Msc  
k = j; 'KH lrmnr  
} .iFViVZC  
} ^6Yd}  
private void fixUp(int k) { 6\NvG,8  
while (k > 1) { -*?p F_*w  
int j = k >> 1; /K7Bae5h  
if (queue[j]>queue[k]) M~uMY+>   
break; tKwn~T  
SortUtil.swap(queue,j,k); J*5hf:?i  
k = j; 14mf}"z\  
} >K\3*]>J3  
} hjkLVL  
dUIqDl  
} 8qn 9|  
OY:u',T  
} >-b&v$  
DKX/W+#a  
SortUtil: Z a! gbt  
`19qq]  
package org.rut.util.algorithm; U_]=E<el  
B`i$Wt<7  
import org.rut.util.algorithm.support.BubbleSort; j_p`Ng  
import org.rut.util.algorithm.support.HeapSort; G~"z_ (  
import org.rut.util.algorithm.support.ImprovedMergeSort; u$C\E<G^  
import org.rut.util.algorithm.support.ImprovedQuickSort; h\(B#SN  
import org.rut.util.algorithm.support.InsertSort; @Tm`d ?^  
import org.rut.util.algorithm.support.MergeSort; }3Qc 24`  
import org.rut.util.algorithm.support.QuickSort; @K\o4\  
import org.rut.util.algorithm.support.SelectionSort; 1I ""X]I_  
import org.rut.util.algorithm.support.ShellSort; "# !D|[h0  
CphFv!k'Z  
/** _ Hc%4I  
* @author treeroot ;`DD}j`  
* @since 2006-2-2 n+2%tW  
* @version 1.0 vDsF-u1  
*/ C8ZL*9U  
public class SortUtil { SAR= {/  
public final static int INSERT = 1; k0JW[04j  
public final static int BUBBLE = 2; S<"oUdkz  
public final static int SELECTION = 3; {Ur7# h5  
public final static int SHELL = 4; gljo;f:  
public final static int QUICK = 5; w8p8 ;@  
public final static int IMPROVED_QUICK = 6; GF*>~_Yr  
public final static int MERGE = 7; @o6R[5(  
public final static int IMPROVED_MERGE = 8; !scD|ti  
public final static int HEAP = 9; t8P PE  
:|rPT)yT]  
public static void sort(int[] data) { +1QK}H ~  
sort(data, IMPROVED_QUICK); b?8)7.{F{  
} KFU%DU G  
private static String[] name={ /N6}*0Ru  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &kzj?xK=(j  
}; vy [C'a  
##cnFQCB  
private static Sort[] impl=new Sort[]{ lNz]H iD  
new InsertSort(), FH8k'Hxg  
new BubbleSort(), /,2rjJ#b  
new SelectionSort(), ;'0=T0\  
new ShellSort(), D/CIA8h3  
new QuickSort(), X %4Kj[I^  
new ImprovedQuickSort(), [*Uu#9  
new MergeSort(), ! \sMR  
new ImprovedMergeSort(), wksl0:BL  
new HeapSort() :QPf~\w?  
}; .XS9,/S  
?2 f_aY ;  
public static String toString(int algorithm){ 0J9D"3T)  
return name[algorithm-1]; \vRd}   
} GSi>l,y'  
$=)gpPT  
public static void sort(int[] data, int algorithm) { Z.1> kZ  
impl[algorithm-1].sort(data); 6@V~0DG  
} v7,$7@$:\  
6~xBi(m`  
public static interface Sort { Ls}7VKl'   
public void sort(int[] data); 0 ipN8Pg+  
} Hr^3`@}#1  
g9~]s 9  
public static void swap(int[] data, int i, int j) { pDl3!m  
int temp = data; D=+NxR[  
data = data[j]; ,eRQu.  
data[j] = temp; ]{GDS! )  
} #+k*1 Jg  
} ~TqT }:,H  
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