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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。 8V@3T/}  
插入排序: Xg"=,j2  
I#0$5a},u^  
package org.rut.util.algorithm.support; z\a#"2(G.  
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import org.rut.util.algorithm.SortUtil; QAr1U7{(.  
/** SExd-=G  
* @author treeroot nX~sVG{Q  
* @since 2006-2-2 Y0DBkg  
* @version 1.0 &( Z8G~h4  
*/ |o`TRqs  
public class InsertSort implements SortUtil.Sort{ @jfd.? RK!  
/Bc ;)~  
/* (non-Javadoc) K=;p^dE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KQh'5o&  
*/ Q'Q^K  
public void sort(int[] data) { {Q0"uE)-.  
int temp; dPS}\&1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); y37@4p^@9  
} eD(#zfP/+  
} #R &F  
} %',. K)IR  
$?7}4u,  
} \ FA7 +Q  
*v6'I-#  
冒泡排序: z}Q54,9m  
H}d&>!\}F  
package org.rut.util.algorithm.support; nI-\HAX  
V`G]4}  
import org.rut.util.algorithm.SortUtil; D(y=0),  
[/I4Pe1Yj%  
/** arnu|paw  
* @author treeroot n@xU5Q  
* @since 2006-2-2 0@z78h=h  
* @version 1.0 {epsiHK@tK  
*/ 3AWg43L7  
public class BubbleSort implements SortUtil.Sort{ &BP%~  
M!,WU[mP  
/* (non-Javadoc)  {sbQf7)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V7.EDE2A3  
*/ NcdOzx>  
public void sort(int[] data) { mZmwCS8  
int temp; '/mwXvl  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 'w DNP_  
if(data[j] SortUtil.swap(data,j,j-1); P9gIKOOx#4  
} ]R( =)  
} f"S^:F0  
} [H!V  
} 2x0[@cT i?  
V5m4dQ>t  
} |#"<{RS+w  
&R25J$  
选择排序: XvWUJ6M  
,?728pfw  
package org.rut.util.algorithm.support; iCx}v[;Ol  
AFyf7^^k  
import org.rut.util.algorithm.SortUtil; VCtj8hKDr  
kd2+k4@#  
/** ZPHB$]ri  
* @author treeroot ><%z~s  
* @since 2006-2-2 )jvYJ9s  
* @version 1.0 *?cE]U6;  
*/ .:E%cL +h  
public class SelectionSort implements SortUtil.Sort { cl[rgj  
zl$'W=[rFs  
/* ^2=11  
* (non-Javadoc) #Fq6-]y1")  
* Y'wQ(6ok  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =5isT  
*/ ;>bcI).  
public void sort(int[] data) { /g@!#Dt  
int temp; id'E_]r  
for (int i = 0; i < data.length; i++) { J#"@~Q+a`@  
int lowIndex = i; ~0eJ6i  
for (int j = data.length - 1; j > i; j--) { r1f##  
if (data[j] < data[lowIndex]) { !c/G'se  
lowIndex = j;  s'RE~,  
} 26?yEd6^Z  
} pkQEry&Z  
SortUtil.swap(data,i,lowIndex); n'>`2 s  
} #f d ;]  
} bejvw?)S.  
_46 y  
} *>I4X=  
v,^2'C$o  
Shell排序: g m'8,ZL  
#!qa#.Yi  
package org.rut.util.algorithm.support; Xgou7x<  
@p~f*b4H?  
import org.rut.util.algorithm.SortUtil; R1)v;^B|)  
:+06M@  
/** [f 4Nq \i  
* @author treeroot `ZhDoLpH<  
* @since 2006-2-2 ' GcN9D  
* @version 1.0 6B'd]Fe  
*/  [,JUC<  
public class ShellSort implements SortUtil.Sort{ VXX7Y? !  
DvhJkdLB>  
/* (non-Javadoc) }f45>@uMW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8iQ8s;@S&>  
*/ jOV,q%)^,:  
public void sort(int[] data) { = wEU+R_#o  
for(int i=data.length/2;i>2;i/=2){ _9*3Mr)2N  
for(int j=0;j insertSort(data,j,i); ^VabXGzo#  
} h)7hk*I  
} =MMU(0 E  
insertSort(data,0,1); /{il;/Vj  
} dz_~_|  
H}vq2|MN  
/** _[M*o0[@W  
* @param data Qu]F<H*Y|  
* @param j ?QR13l(  
* @param i VEFUj&t;xW  
*/ PaIE=Q4gJ  
private void insertSort(int[] data, int start, int inc) { O(pa;&"  
int temp; U~H]w ,^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); .d/e?H:  
} FK ? g  
} 4TX~]tEyky  
} Ts)ox}rYVm  
Y~,ZBl,  
} HFlMx  
^I!u H1G  
快速排序: 1!/WC.0  
bMU0h,|]  
package org.rut.util.algorithm.support; : ZehBu  
*{TB<^ *  
import org.rut.util.algorithm.SortUtil; |&wwH&<[z  
{_[\k^98>  
/** t:$^iUrx  
* @author treeroot Ct@OS227x  
* @since 2006-2-2 % XvJJ  
* @version 1.0 7UnB]-:.  
*/ xQA6!j  
public class QuickSort implements SortUtil.Sort{ zw ,( kv  
Xlg 0u.  
/* (non-Javadoc) >_esLsPWh]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Zr+>a  
*/ !N"Y  
public void sort(int[] data) { C[c^zn  
quickSort(data,0,data.length-1); 8>4@g!9E  
} \A#YL1hh  
private void quickSort(int[] data,int i,int j){ Ah#bj8}  
int pivotIndex=(i+j)/2; hsCts@R  
file://swap nI0TvB D  
SortUtil.swap(data,pivotIndex,j); zfGS=@e]G  
RZ +SOZs7H  
int k=partition(data,i-1,j,data[j]); {PBm dX  
SortUtil.swap(data,k,j); D^dos`L0b  
if((k-i)>1) quickSort(data,i,k-1); A4Sb(X|j  
if((j-k)>1) quickSort(data,k+1,j); ais@|s;  
crvq]J5  
} <?h,;]U  
/** dAba'|Y  
* @param data $-4 Zi  
* @param i A*x3O%zH  
* @param j `bAOhaB,/  
* @return 25R6>CXsi  
*/ #]SiS2lM#  
private int partition(int[] data, int l, int r,int pivot) { x b6X8:  
do{ pXap<T  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M?[~_0_J  
SortUtil.swap(data,l,r); FV~ENpncP  
} x%]5Q/|Ur  
while(l SortUtil.swap(data,l,r); vHmsS\\~9  
return l; nGoQwKIW  
} K3*8-Be  
)y#~eYn  
} ;:Kd?Tz$  
A,fPl R  
改进后的快速排序: J>w3>8!>7  
`2I<V7SF$  
package org.rut.util.algorithm.support; <h"07.y  
P,RdY M06  
import org.rut.util.algorithm.SortUtil; _+=M)lPm  
V(#z{!  
/** P70]Ju  
* @author treeroot + $Yld{i  
* @since 2006-2-2 F<9S,  
* @version 1.0 IVY{N/ 3|  
*/ 3q}fDM(@J  
public class ImprovedQuickSort implements SortUtil.Sort { rb_FBa%  
?yNg5z  
private static int MAX_STACK_SIZE=4096; pVN) k  
private static int THRESHOLD=10; (U?*Z/  
/* (non-Javadoc) Bk44 wz2 X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (^lw<$N  
*/ j84g6;4Dv  
public void sort(int[] data) { ps@;Z ?Q  
int[] stack=new int[MAX_STACK_SIZE]; 1&2X*$]y  
;)7GdR^K  
int top=-1; ~tM+!  
int pivot; UB8TrYra  
int pivotIndex,l,r; hW Va4  
t^')ST  
stack[++top]=0; !Zi_4 .(4  
stack[++top]=data.length-1; Z]^Ooy[pb  
<$+Cd=71\  
while(top>0){ ,GVD.whUl  
int j=stack[top--]; _(zPA4q8q  
int i=stack[top--]; I&Dp~aEM]  
$-#|g  
pivotIndex=(i+j)/2; $C^tZFq  
pivot=data[pivotIndex]; oU[>.Igi  
F?y4 L9|e  
SortUtil.swap(data,pivotIndex,j); S`t@L}  
z4B-fS]  
file://partition vj#Y /B  
l=i-1; ]f}#&]<(T  
r=j; ~9Jlb-*I5  
do{ |XV@/ZGl~  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 0 v> *P*  
SortUtil.swap(data,l,r); .z6"(?~  
} bsosva+  
while(l SortUtil.swap(data,l,r); .?^a|]  
SortUtil.swap(data,l,j); 9]]isE8r  
CtO;_ ;eD'  
if((l-i)>THRESHOLD){ 0; PV gO;9  
stack[++top]=i; xhTiOt6l  
stack[++top]=l-1; p*ic@n*G  
} rAwuWM@BIg  
if((j-l)>THRESHOLD){ :GBM`f@  
stack[++top]=l+1; hT DFIYV  
stack[++top]=j; fBw"<J{  
} Tj3xK%K_r3  
a 9H^e<g  
} ;jZf VRl  
file://new InsertSort().sort(data); E(p*B8d  
insertSort(data); qh)10*FB  
} s k>E(Myo  
/** +[_mSt  
* @param data PgMU|O7To  
*/ sCrOdJ6|  
private void insertSort(int[] data) { yzH[~O7  
int temp; 8x/]H(J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); "> ]{t[Ib  
} ]ML(=7z"  
} M[1!#Q><!  
} IizPu4|  
H5J1j*P<d  
} O*dtVX  
@SX-=Nr  
归并排序: Mv%"aFC  
E/5/5'gBJO  
package org.rut.util.algorithm.support; VxTrL}{(6  
z-g"`w:Lj  
import org.rut.util.algorithm.SortUtil; (;6vT'hE  
uJ@C-/BD!M  
/** _Gb O>'kE  
* @author treeroot X={Z5Xxr"  
* @since 2006-2-2 w;=g$Bn  
* @version 1.0 *%p`Jk-U  
*/ H7Y :l0b  
public class MergeSort implements SortUtil.Sort{ 0~( f<:  
Z6\H4,k&  
/* (non-Javadoc) >"?jW@|g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >\s8S}p  
*/ U9/6F8D1Y1  
public void sort(int[] data) { .d?2Kc)SV\  
int[] temp=new int[data.length]; @en*JxIM  
mergeSort(data,temp,0,data.length-1); P7D__hoE  
} )wdTs>W7  
79MF;>=tV  
private void mergeSort(int[] data,int[] temp,int l,int r){ s"-gnW  
int mid=(l+r)/2; mLb>*xt$b@  
if(l==r) return ; >Y 8\I  
mergeSort(data,temp,l,mid); ]mZN18#  
mergeSort(data,temp,mid+1,r); Y)*:'&~2e  
for(int i=l;i<=r;i++){ X Z4q{^o  
temp=data; 7^<{aE:  
} Nay&cOz  
int i1=l; S:YQVj  
int i2=mid+1; dHO8 bYBH  
for(int cur=l;cur<=r;cur++){ .sBwJZ  
if(i1==mid+1) W^8MsdM  
data[cur]=temp[i2++]; ^=.QQo||B  
else if(i2>r) 8%Eemk>G{  
data[cur]=temp[i1++]; Ax{C ^u  
else if(temp[i1] data[cur]=temp[i1++]; 7%)KB4(\_  
else BH3%dh :9  
data[cur]=temp[i2++]; ;'i>^zX`  
} <yg! D21Y  
} B$D7}=|kc  
8lZB3p]X  
} @F/yc  
mK_2VZj&  
改进后的归并排序: :ND e<6?u  
dK d"2+fH  
package org.rut.util.algorithm.support; kPvR ,  
8H@]v@Z2  
import org.rut.util.algorithm.SortUtil; W"[Q=$2<<  
RTQtXv6mD  
/** -F~"W@9r  
* @author treeroot 4uy:sCmu  
* @since 2006-2-2 9ymx;  
* @version 1.0 W\1V`\gF  
*/ 2uT"LW/(H  
public class ImprovedMergeSort implements SortUtil.Sort { 8D:0Vhx\I  
Y:#nk.}>  
private static final int THRESHOLD = 10; kT12  
Dhze2q)o  
/* Ra)AQ n  
* (non-Javadoc) _/[}PQC6G  
* ,qu7XFYrY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z;Yo76P  
*/ L{F[>^1Sb  
public void sort(int[] data) { E E^l w61  
int[] temp=new int[data.length]; DNu-Ce%  
mergeSort(data,temp,0,data.length-1); HD!2|b ~@  
}  eo&^~OVT  
dBb &sA-A  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5lrjM^E|  
int i, j, k; H63?Erh>a  
int mid = (l + r) / 2; F1GFn|OA  
if (l == r) p:?h)'bA<  
return; r(OH  
if ((mid - l) >= THRESHOLD) .8]buM5_G  
mergeSort(data, temp, l, mid); . /@C  
else K*9~ g('  
insertSort(data, l, mid - l + 1); q~6a$8+t  
if ((r - mid) > THRESHOLD) }CGA)yK~3  
mergeSort(data, temp, mid + 1, r); PfjD!=yS=h  
else H84Zg/ ^  
insertSort(data, mid + 1, r - mid); _X)`S"EsJ  
|YcYWok  
for (i = l; i <= mid; i++) { !$pnE:K  
temp = data; 32z2c:G  
} 8/"R&yAh  
for (j = 1; j <= r - mid; j++) { #I}w$j i  
temp[r - j + 1] = data[j + mid]; &hu3A)%  
} ,R[<+!RS  
int a = temp[l]; 6(8zt"E  
int b = temp[r]; ZO8r8 [  
for (i = l, j = r, k = l; k <= r; k++) { 'BX U '  
if (a < b) { D $&6 8  
data[k] = temp[i++]; r<OqI*7  
a = temp; p>h}k_s  
} else { #&,~5  
data[k] = temp[j--]; ]=G  dAW  
b = temp[j]; ?%ei+  
} TH>7XK<90M  
} KmpKyc[  
} =z*SzG  
 N~vK8j@  
/** OICH:(t_  
* @param data MmH(dp+  
* @param l <Gj]XAoe%  
* @param i avy@)iO7  
*/ yW@YW_2;4  
private void insertSort(int[] data, int start, int len) { @ S)p{T5G  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 4|h>.^  
} 8SOfX^;o  
} hh8U/dVk*  
}  Q5 =  
} [PH56f  
`N;O6 wZ  
堆排序: CF]#0*MI  
PwC^ ]e  
package org.rut.util.algorithm.support; >A>_UT_"  
DbrK, 'b%  
import org.rut.util.algorithm.SortUtil; I/_,24[  
F0KNkL>&g  
/** (V<pz2\  
* @author treeroot &I7T ?  
* @since 2006-2-2 '<1Q;3Ho  
* @version 1.0 6F; |x  
*/ 4$ ^rzAi5  
public class HeapSort implements SortUtil.Sort{ :RDQP  
d;v<rw  
/* (non-Javadoc) .(Tf$V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4XNkto  
*/ seiE2F[  
public void sort(int[] data) { `teaE7^Wm  
MaxHeap h=new MaxHeap(); %ZT I ?a  
h.init(data); ?6_U>d{  
for(int i=0;i h.remove(); pGP$2  
System.arraycopy(h.queue,1,data,0,data.length); u& <NBxY  
} \4Z"s[8}  
EfqC_,J*3  
private static class MaxHeap{ 4\y>pXML-U  
DAQozhP8  
void init(int[] data){ :~\ y<  
this.queue=new int[data.length+1]; p!7(a yu  
for(int i=0;i queue[++size]=data; S4D~`"4 $/  
fixUp(size); 8X)1bNGqhe  
} ,lQfsntk'  
} cB_ 3~=fV  
9 =D13s(C  
private int size=0; 3Y=uBl  
I&>5b7Uf  
private int[] queue; cdTG ]n  
ALt^@|!d  
public int get() { uO4R5F|tL  
return queue[1]; Y0g6zHk7  
} zv~b-Tp  
<ELqj2`c  
public void remove() { O6]X\Cwj%  
SortUtil.swap(queue,1,size--); `3L?x8g  
fixDown(1); Qk8YR5 K   
} 8_{XrTw(  
file://fixdown {jo"@&2S  
private void fixDown(int k) { ZmZ7E]c  
int j; r?}L^bK  
while ((j = k << 1) <= size) { -z'6.I cO  
if (j < size %26amp;%26amp; queue[j] j++; # N'_~:H  
if (queue[k]>queue[j]) file://不用交换 vjd;*ORB  
break; [t"#4[  
SortUtil.swap(queue,j,k); )w0K2&)A  
k = j; hSXZu?/  
} UB7C,:"  
} Xagz(tm/  
private void fixUp(int k) { VV"1IR  
while (k > 1) { \= Wrh3  
int j = k >> 1; !uN_<!  
if (queue[j]>queue[k]) c1h?aP  
break; L87=*_!B;  
SortUtil.swap(queue,j,k); %i@Jw  
k = j; ~i=5NUE  
} X@Yl<9|i  
} !==C@cH<N  
zqm/<]A*l  
} ;c|G  
4n/CS AT1  
} 8[d6 s  
4H hQzVM{  
SortUtil: I=|}%WO#  
H#B97IGT  
package org.rut.util.algorithm; P |;=dX#-  
(z^9 87G  
import org.rut.util.algorithm.support.BubbleSort; J(kC  
import org.rut.util.algorithm.support.HeapSort; ZCDcf   
import org.rut.util.algorithm.support.ImprovedMergeSort; gkld}t*U  
import org.rut.util.algorithm.support.ImprovedQuickSort; m ?jF:] ^  
import org.rut.util.algorithm.support.InsertSort; E\XD~  
import org.rut.util.algorithm.support.MergeSort; |1UJKJwX  
import org.rut.util.algorithm.support.QuickSort; 92g&,Wb  
import org.rut.util.algorithm.support.SelectionSort; kXW$[R  
import org.rut.util.algorithm.support.ShellSort; W)2ZeH*  
^spASG -o  
/** CxJH)H$  
* @author treeroot mH7Mch| m  
* @since 2006-2-2 h;t5v6["  
* @version 1.0 Kr74|W=  
*/ rB.LG'GG]  
public class SortUtil { W(jP??up  
public final static int INSERT = 1; ItwJL`  
public final static int BUBBLE = 2; )k&!&  
public final static int SELECTION = 3; "U iv[8B  
public final static int SHELL = 4; \-RVPa8k  
public final static int QUICK = 5; kcZz WG|n  
public final static int IMPROVED_QUICK = 6; 5 DvD  
public final static int MERGE = 7; #<gD@Jybu  
public final static int IMPROVED_MERGE = 8; nHIW_+<Mf  
public final static int HEAP = 9; Schvwlm~i  
7=pJ)4;ZA  
public static void sort(int[] data) { kT4Oal+4  
sort(data, IMPROVED_QUICK); a'YK1QX  
} |v= */e  
private static String[] name={ |Whkq/Zg  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !T1)tGrH  
}; H(ds  
~19&s~  
private static Sort[] impl=new Sort[]{ 9Xeg &Z|!  
new InsertSort(), ?V(h@T  
new BubbleSort(), $s!2D"wl n  
new SelectionSort(), K)TMr"j\  
new ShellSort(), NEcE -7aT  
new QuickSort(), zn/b\X/  
new ImprovedQuickSort(), Q5/BEUkC  
new MergeSort(), gshgl3   
new ImprovedMergeSort(), b[ .pD3  
new HeapSort() ]B9Ut&mF;  
}; #mH4\s  
Oh/2$72  
public static String toString(int algorithm){ '{:lP"\,L  
return name[algorithm-1]; 75RQ\_zDu  
} Hy#<fKz`!  
P> i lRb  
public static void sort(int[] data, int algorithm) { d/&~IR  
impl[algorithm-1].sort(data); SMbhJ}\O  
} y<*/\]t9L[  
V"Y-|R  
public static interface Sort { +4m~D`fqt[  
public void sort(int[] data); uz[5h0c  
} mNnt9F3Eq  
d9yfSZ  
public static void swap(int[] data, int i, int j) { ,|Lf6k  
int temp = data; 7Un5Y[FZo  
data = data[j]; _J -3{a  
data[j] = temp; `T~~yM)q  
} kc}&\y  
} S$1dXXT  
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