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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。 7"iUyZ(  
插入排序:  Q9!T@  
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package org.rut.util.algorithm.support; y!,Ly_x$@  
O6gl[aZN  
import org.rut.util.algorithm.SortUtil; tzKIi_2  
/** @+,J^[ y  
* @author treeroot h>A~..  
* @since 2006-2-2 5Lo\[K >j  
* @version 1.0 X`n)]~  
*/ v"po}K  
public class InsertSort implements SortUtil.Sort{ Ew9\Y R}  
<EHgPlQn  
/* (non-Javadoc) P m Zb!|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X,Q'Xe /  
*/ 1_aUU,|.  
public void sort(int[] data) { ("+J*u*kq_  
int temp; Kpx(x0^2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); RF,[1O-\O  
} !pwY@} oL  
} bIR&e E  
} 04u^Q  
7 B<  
} v*pN~}5  
&ml7368@  
冒泡排序: +Ui @3Q  
V2&O]bR  
package org.rut.util.algorithm.support; zK5/0zMZ  
A5A4*.C  
import org.rut.util.algorithm.SortUtil; +;ILj<!Z7  
C1V@\mRi  
/** :L E&p[^  
* @author treeroot a(qij&>  
* @since 2006-2-2 ;nDCyn4i]  
* @version 1.0 de&*#O5  
*/ zOEdFU{x  
public class BubbleSort implements SortUtil.Sort{ f <,E  
'DDlX3W-  
/* (non-Javadoc) KTQy pv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &T i:IC%M  
*/ h !yu. v  
public void sort(int[] data) { lh N2xg5x  
int temp; D #`o  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Exy|^Dr0  
if(data[j] SortUtil.swap(data,j,j-1); Pa8E.<>  
} ^ |xSU_wa  
} }r+(Z.BHM  
}  ./iC  
} \fk%^1XY  
91Fx0(  
} 6 G^x%s  
Rfk8trD B  
选择排序: O>h,u[0  
3[RP:W@%  
package org.rut.util.algorithm.support; T@S\:P  
qir/Sa' [  
import org.rut.util.algorithm.SortUtil; 4IT`8n~  
(iT?uMRz  
/** 0G=bu5  
* @author treeroot uaX#nn?ws  
* @since 2006-2-2 7;w x,7CUq  
* @version 1.0 OIqisQ7ZB  
*/ CXe2G5  
public class SelectionSort implements SortUtil.Sort { )37.H^7  
['*{f(AI  
/* sv g`s,g  
* (non-Javadoc) 3>+9Rru  
* TN+iv8sT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q7~9~  
*/ r}9a3 1i  
public void sort(int[] data) { /CE]7m,7~K  
int temp; 3Y L  
for (int i = 0; i < data.length; i++) { Hju7gP=y}  
int lowIndex = i; us_o{  
for (int j = data.length - 1; j > i; j--) { U@6bH@v5  
if (data[j] < data[lowIndex]) { xYgG  
lowIndex = j; \h#,qTE  
} XVlZ:kz  
} kwcH$w<I  
SortUtil.swap(data,i,lowIndex); "\n,vNk  
} 0c$0<2D%  
} aT]G&bR?  
n{b(~eL?  
} CSA.6uIT  
:nt 7jm,  
Shell排序: YV6@SXy  
"<e<0::  
package org.rut.util.algorithm.support; E!,+#%O>  
B5nzkJV<X  
import org.rut.util.algorithm.SortUtil; qG=>eRR  
/^F_~.u{  
/** #)qn$&.H  
* @author treeroot cIm_~HH  
* @since 2006-2-2 (Ov{gj^  
* @version 1.0 }%&hxhR^t3  
*/ 5yh:P3 /  
public class ShellSort implements SortUtil.Sort{ 4)cQU.(*k  
;x|E}XD  
/* (non-Javadoc) >I~$h,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "<#-#j  
*/ WRq:xDRn0  
public void sort(int[] data) { |qn`z-  
for(int i=data.length/2;i>2;i/=2){ aZk/\&=6  
for(int j=0;j insertSort(data,j,i); R>r@I_  
} t,YnweH  
} cJ}J4?  
insertSort(data,0,1); 3!&PI  
} o!\Q,  
eplz5%<  
/** 'V*ixK8R0  
* @param data ="k9 y  
* @param j xD:t$~  
* @param i \NiW(!Z}  
*/  ?^8CD.|  
private void insertSort(int[] data, int start, int inc) { xb N)z  
int temp;  ]\qbe  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /8)-j}gZa  
} 4/z K3%J  
} FnoE\2}9  
} !mM`+XH  
H/rJ:3  
} (9"w{pnlLc  
J'Z!`R|  
快速排序: MHuQGc"e+4  
'aWrjfDy:  
package org.rut.util.algorithm.support; 9*thqs3J#d  
U)f;*{U  
import org.rut.util.algorithm.SortUtil; d(=*@epjR  
MRI`h.  
/** #><P28m  
* @author treeroot ]uikE2nn  
* @since 2006-2-2 JQo"<<[  
* @version 1.0 D?)^{)49  
*/ NSsLuM=.  
public class QuickSort implements SortUtil.Sort{ ~36)3W[4  
dGNg[  
/* (non-Javadoc) 'e/= !"T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "vH>xBR[%  
*/ xw>\6VNt  
public void sort(int[] data) { oHW:s96e  
quickSort(data,0,data.length-1); FLb Q#c\  
} ~]d3 f  
private void quickSort(int[] data,int i,int j){ ||}k99y +  
int pivotIndex=(i+j)/2; 3pV^Oe^9  
file://swap DCv=*=6w  
SortUtil.swap(data,pivotIndex,j); {\SJr:  
+9tm9<F8  
int k=partition(data,i-1,j,data[j]); _gLj(<^9  
SortUtil.swap(data,k,j); U= Gw(  
if((k-i)>1) quickSort(data,i,k-1);  MeP,8,n'  
if((j-k)>1) quickSort(data,k+1,j); I}Fv4wlZG  
VssD  
} hxXl0egI  
/** fMRv:kNAt  
* @param data C:?mOM#_  
* @param i nx2iEXsa  
* @param j vFz#A/1  
* @return @`IMR$'  
*/ vC# *w,  
private int partition(int[] data, int l, int r,int pivot) { PsV1btq]  
do{ y{ ?wxg9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); |5;:3K+  
SortUtil.swap(data,l,r); mh4<.6>5  
} 8iB}gHe9  
while(l SortUtil.swap(data,l,r); N084k}io  
return l; Ai~j q  
} 60iMfc T  
+s`HTf  
} t&oNC6  
w@jC#E\  
改进后的快速排序: LE'8R~4.<  
gf&\)"  
package org.rut.util.algorithm.support; IwTAM9n  
" iz'x-wy  
import org.rut.util.algorithm.SortUtil; si!jB%^  
Qw,{"J  
/** 'Avp16zg  
* @author treeroot qubyZ8hx  
* @since 2006-2-2 }Qqi013E L  
* @version 1.0 &>YdX$8x  
*/ A~!v+W%vO1  
public class ImprovedQuickSort implements SortUtil.Sort { %VSjMZ  
q[wVC h  
private static int MAX_STACK_SIZE=4096; c9 &LK J6  
private static int THRESHOLD=10; b: c$EPK  
/* (non-Javadoc) d:_3V rRZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )~Pj 3  
*/ ]y **ZFA  
public void sort(int[] data) { g]ct6-m  
int[] stack=new int[MAX_STACK_SIZE]; a%IJ8t+mn  
BM }{};p6  
int top=-1; }OJ,<!v2pc  
int pivot; 4D4Y.g_x  
int pivotIndex,l,r; G]$.bq[v  
2JMMNpya  
stack[++top]=0; /_?y]Ly[r  
stack[++top]=data.length-1; pSPVY2qKX  
(H_YYZ3ZX  
while(top>0){ B=R9K3f  
int j=stack[top--]; J/{!_M-  
int i=stack[top--]; b.4H4LV  
Q&@~<!t  
pivotIndex=(i+j)/2; PlX6,3F  
pivot=data[pivotIndex]; "UVqHW1%K  
 g%.;ZlK  
SortUtil.swap(data,pivotIndex,j); 1Fs:&*=  
hE9UWa.Q>  
file://partition e=).0S`*F  
l=i-1; Mqk[+n  
r=j; ^T.icSxP  
do{ 8Q*477=I  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Y~fa=R{W  
SortUtil.swap(data,l,r); n6 VX0R  
} in[yrqFb7t  
while(l SortUtil.swap(data,l,r); :mI[fQ  
SortUtil.swap(data,l,j); vz *'1ugaA  
`\]gNn'Q  
if((l-i)>THRESHOLD){ zQt"i`{U  
stack[++top]=i; jx?"m=`s:  
stack[++top]=l-1; "fq8)  
} $7'K]'UJXO  
if((j-l)>THRESHOLD){ kuZs30^  
stack[++top]=l+1; ]6*+i $  
stack[++top]=j; ,5 A&  
} B S^P&TR!  
R|,F C'  
} $Rd]e C  
file://new InsertSort().sort(data); zg[.Pws:E  
insertSort(data); 1%^d <%,]  
} jW< aAd  
/** )d^b\On  
* @param data SR<*yO  
*/ Ia'm9Z*  
private void insertSort(int[] data) { 0\X'a}8Bu  
int temp; >(9"D8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?04$1n:  
} EYaX@|)  
} /DC\F5 G  
} X^% E"{!nU  
Aq5@k\[  
} %ylpn7I\6  
m`Dn R`+  
归并排序: Ev)aXP  
{T=rsPp<@  
package org.rut.util.algorithm.support; )yyS59s  
;/- X;!a>  
import org.rut.util.algorithm.SortUtil; K;NaiRP#k  
KD*q|?Z  
/** F,NS:mE  
* @author treeroot q_gsYb  
* @since 2006-2-2 flr&+=1?D  
* @version 1.0 qUuvM  
*/ %(v<aEQtt  
public class MergeSort implements SortUtil.Sort{ @9}SHS  
!vQDPLBL  
/* (non-Javadoc) 4pw:O^v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R c.8j,]  
*/ .%3qzOrN  
public void sort(int[] data) { M?FbBJ`sF  
int[] temp=new int[data.length]; `B GU  
mergeSort(data,temp,0,data.length-1); a=%QckR*  
} oKlOcws}  
NW*qw q  
private void mergeSort(int[] data,int[] temp,int l,int r){ Do\YPo_Mr  
int mid=(l+r)/2; Fu/{*4  
if(l==r) return ; XY*KWO  
mergeSort(data,temp,l,mid); V!3.MQM  
mergeSort(data,temp,mid+1,r); =#Qm D=  
for(int i=l;i<=r;i++){ rf:C B&u  
temp=data; Jemb0Qv  
} Z^?YTykH  
int i1=l; >RL|W}tI4  
int i2=mid+1; /U1 jCLR'  
for(int cur=l;cur<=r;cur++){ xy.di9  
if(i1==mid+1) ,TdL-a5  
data[cur]=temp[i2++]; >8>}o4Q/X  
else if(i2>r) \@eC^D2  
data[cur]=temp[i1++]; o@!!I w  
else if(temp[i1] data[cur]=temp[i1++]; ==W`qC4n?n  
else tG"lI/  
data[cur]=temp[i2++]; $S(q;Y  
} ]L?DV3N  
} :87HXz6]jS  
d J;y>_  
} aDreN*n  
Dn9AOi!  
改进后的归并排序: /[|ODfY  
=nTNL.SX  
package org.rut.util.algorithm.support; rcyq+wY #  
fmv8)$W#U  
import org.rut.util.algorithm.SortUtil; &8^1:CcE  
SyWLPh  
/** 4-dV%DgC  
* @author treeroot {k#RWDespy  
* @since 2006-2-2 oP0ZJK&;  
* @version 1.0 -?K?P=B;X  
*/ ?{bAyh/  
public class ImprovedMergeSort implements SortUtil.Sort { MG G c  
nOE 1bf^l  
private static final int THRESHOLD = 10; kl90w  
z/IZ ;K_e  
/* "VfV;)]|w  
* (non-Javadoc) EgY yvS)  
* J BN_Upat  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a!?&8$^<  
*/ }s7ibm'  
public void sort(int[] data) { ncy?w e  
int[] temp=new int[data.length]; aRh1Q=^@(4  
mergeSort(data,temp,0,data.length-1); C*f3PB=H_  
} CaV>\E)  
+mqz)-x  
private void mergeSort(int[] data, int[] temp, int l, int r) { [61T$.  
int i, j, k; ,svj(HP$  
int mid = (l + r) / 2; fsxZQ=-PW  
if (l == r) =yZiBJ  
return; U $ bLt  
if ((mid - l) >= THRESHOLD) FKN!*}3  
mergeSort(data, temp, l, mid); ;%V%6:5  
else yN Bb(!u  
insertSort(data, l, mid - l + 1); -UhGacw  
if ((r - mid) > THRESHOLD) IRxFcLk  
mergeSort(data, temp, mid + 1, r); 1Z+\>~8  
else =rrbS8To=  
insertSort(data, mid + 1, r - mid); fcC?1M[BP~  
>[U.P)7;  
for (i = l; i <= mid; i++) { ny,a5zEnF  
temp = data; ^:yg,cS|Be  
} pOz4>R  
for (j = 1; j <= r - mid; j++) { *YI>Q@F9  
temp[r - j + 1] = data[j + mid]; 9u->.O: p  
} ;Npv 2yAab  
int a = temp[l]; b3 ,&RUF  
int b = temp[r]; o9Z!Z ^  
for (i = l, j = r, k = l; k <= r; k++) { f/&k $,w  
if (a < b) { \~YyY'J  
data[k] = temp[i++]; mu!hD^fw  
a = temp; NSPa3NE  
} else { b[MdA|C%j  
data[k] = temp[j--]; hR]AUH  
b = temp[j]; ~D9VjXfL)  
} )= ,Lfj8x  
} #O |Z\|n  
} =:!$'q:  
u7Xr!d+wR  
/** #78P_{#!  
* @param data s|1BqoE  
* @param l 6,C,LT2^(  
* @param i Nd"Rt  
*/ gmY*}d` 'f  
private void insertSort(int[] data, int start, int len) { U;_b4S:  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ,3zF_y(*Y  
} A/xWe  
} #0+`dI_5/  
} PUdJ>U  
} NB z3j  
P0En&g+~  
堆排序: x*9CK8o=  
dX58nJ4u  
package org.rut.util.algorithm.support; AxN.k  
;I#S m;  
import org.rut.util.algorithm.SortUtil; {c3u!} mW  
YJ&K0 %R  
/** bYKyR}e  
* @author treeroot W:8*Z8?7  
* @since 2006-2-2 {\?zqIM  
* @version 1.0 #()u=)  
*/ 4+V+SD  
public class HeapSort implements SortUtil.Sort{ %>cl0W3x  
=.]>,N`C  
/* (non-Javadoc) ww]^H$In  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G2nL#l~@)  
*/ B~_='0Gm[  
public void sort(int[] data) { b 83__i  
MaxHeap h=new MaxHeap(); w :w  
h.init(data); + !I7(gL  
for(int i=0;i h.remove(); $hkMJ),T~  
System.arraycopy(h.queue,1,data,0,data.length); ~)zoIM\  
} A-GRuC  
NdS6j'%B@7  
private static class MaxHeap{ T/_JXK>W  
Y!kz0([  
void init(int[] data){ >t/P^fr_F  
this.queue=new int[data.length+1]; DiB~Ovh|  
for(int i=0;i queue[++size]=data; z_dorDF8`>  
fixUp(size); s{-`y`JP  
} 3q>6gaTv  
} 5K;vdwSB  
L29,Y=n@  
private int size=0; Vs1j9P|G  
hm%'k~  
private int[] queue; 2>.2H  
OZF^w[ `w  
public int get() { zs@#.OEH  
return queue[1]; 9q2 >_Mv  
} P}%0YJ$6  
J {gqm  
public void remove() { Sd3KY9,  
SortUtil.swap(queue,1,size--); 4DVkycM  
fixDown(1); u#8J`%g  
} b"ypS7 _  
file://fixdown n.{+\M6k  
private void fixDown(int k) { LvJ')HG  
int j; D<rO:Er?*a  
while ((j = k << 1) <= size) { >A$J5B >d  
if (j < size %26amp;%26amp; queue[j] j++; Fr}e-a  
if (queue[k]>queue[j]) file://不用交换 ,t+5(qi  
break; S^@I4Z  
SortUtil.swap(queue,j,k); mGjxc}  
k = j; ~HwY?[}!m  
} r@&d88U:  
} $XqfwlUu/4  
private void fixUp(int k) { @)8QxI^3[  
while (k > 1) { LF'M!C9|  
int j = k >> 1; yJaQcGxE"  
if (queue[j]>queue[k]) wl{Fx+<^3  
break; U}xQUFT|  
SortUtil.swap(queue,j,k); }57wE$9K  
k = j; e!wS"[,  
} }}3*tn<6  
} 7-M$c7S  
Vrf+ ~KO7  
} gY], (*v  
kO:iA0KUX  
} YC:>)  
,`/J1(\ nd  
SortUtil: O[3AI^2  
27-<q5q  
package org.rut.util.algorithm; um@RaU  
zaX!f ~;"  
import org.rut.util.algorithm.support.BubbleSort; "hU'o&  
import org.rut.util.algorithm.support.HeapSort; GNXQD}L?b?  
import org.rut.util.algorithm.support.ImprovedMergeSort; rl^_RI  
import org.rut.util.algorithm.support.ImprovedQuickSort; XelY?Ph,,  
import org.rut.util.algorithm.support.InsertSort; -{>Nrx|  
import org.rut.util.algorithm.support.MergeSort; [=Wn7cr  
import org.rut.util.algorithm.support.QuickSort; p6(n\egR  
import org.rut.util.algorithm.support.SelectionSort; %Ke:%##Y  
import org.rut.util.algorithm.support.ShellSort; L&qzX)  
DRD%pm(  
/** R1z\b~@"  
* @author treeroot l1~>{:mq  
* @since 2006-2-2 4WnB{9 i`I  
* @version 1.0 YF=@nR$_~j  
*/ "t+VF 4r  
public class SortUtil { ?op6_a-wm  
public final static int INSERT = 1; hq.z:D  
public final static int BUBBLE = 2; cLH|;  
public final static int SELECTION = 3; Bv $;yR  
public final static int SHELL = 4; tw8@&8"  
public final static int QUICK = 5; yV :DR  
public final static int IMPROVED_QUICK = 6; <CL0@?*i9  
public final static int MERGE = 7; D"F5-s7  
public final static int IMPROVED_MERGE = 8; jxL5L[  
public final static int HEAP = 9; Ys10r-kDS  
+XU*NAD,!  
public static void sort(int[] data) { NYD#I{h  
sort(data, IMPROVED_QUICK); VdR5ZP  
} CTt3W>'=+  
private static String[] name={ 06I'#:]  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *1V}vJvi  
}; fmH$ 1C<  
!!ZNemXct$  
private static Sort[] impl=new Sort[]{ KIdlndGs  
new InsertSort(), 6Flc4L8JU  
new BubbleSort(), h"KN)xi$  
new SelectionSort(), '$~9~90?Z  
new ShellSort(), 0-EhDGa]r  
new QuickSort(), |b'fp1</  
new ImprovedQuickSort(), + )?1F  
new MergeSort(), GLA,,i'i9  
new ImprovedMergeSort(), ([s}bD.9  
new HeapSort() jRK<FK  
}; WO*YBH@  
\>w[#4`m  
public static String toString(int algorithm){ 6 $%^  
return name[algorithm-1]; F#@Mf?#2  
} e9h T  
Kz!-w  
public static void sort(int[] data, int algorithm) { p^+k:E>U  
impl[algorithm-1].sort(data); i/*&;  
} 1i9}mzy%  
-[~UX!XFM  
public static interface Sort { .O'S@ %]  
public void sort(int[] data); )cB00*/  
} E/:<9xl  
|sHIT<=m  
public static void swap(int[] data, int i, int j) { .x$+ 7$G  
int temp = data; >t u3m2  
data = data[j]; J'y*;@4l^:  
data[j] = temp; kRnh20I  
} r4jW=?|  
} =PyU9C-@  
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