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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。 ?-1r$31p  
插入排序: 7FRmx 4(!  
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package org.rut.util.algorithm.support; fGmT_C0t  
SNY~9:;]f  
import org.rut.util.algorithm.SortUtil; #s!'+|2n  
/** TX#m&vh  
* @author treeroot P./VmY'  
* @since 2006-2-2 {3&|tk!*  
* @version 1.0 QBR=0(giF  
*/ Rb\6;i8R  
public class InsertSort implements SortUtil.Sort{ WJ*n29^N^h  
5xii(\lC  
/* (non-Javadoc) D%JlbH8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?McQr1  
*/ PTj&3`v  
public void sort(int[] data) { 2)j0Ai%  
int temp; s3W@WH^.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 86z]<p (  
} *b]; |n{  
} s: 3z'4oX  
}  6m6zA/  
<8,cuX\  
} ne^imht  
_V\Bp=9W  
冒泡排序: dg^L=  
je]}R>[r5  
package org.rut.util.algorithm.support; iDf,e Kk$'  
u :F~K  
import org.rut.util.algorithm.SortUtil; O@YTAT&d#  
Z{H5oUk  
/** 5O`dO9g}$  
* @author treeroot Hk|0HL  
* @since 2006-2-2 $-On~u0g  
* @version 1.0 F]9nB3:W  
*/ `_&Vt=7lG  
public class BubbleSort implements SortUtil.Sort{ 0q&'(-{s1  
><=gV~7lx  
/* (non-Javadoc) 1 E22R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eAqz3#_My  
*/ l&}y/t4%  
public void sort(int[] data) { CpJ0m-7aIH  
int temp; uPniLx\t:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Y[ N^p#t{  
if(data[j] SortUtil.swap(data,j,j-1); lSH6>0#B  
} \%p34K\  
} yS=oUE$  
} 6)BR+U  
} J+f!Ar  
WKSPBT;  
} "]\+?  
,~?YBLw@c  
选择排序: R N@ctRS  
h`3eu;5)  
package org.rut.util.algorithm.support; a<fUI%_  
8| $3OVS  
import org.rut.util.algorithm.SortUtil; Ka,^OW}<%q  
B4]`-mahO  
/** ]~\sA  
* @author treeroot y9KB< yh/  
* @since 2006-2-2 l9M0cZ,  
* @version 1.0 rm} R>4  
*/ $U/YR&vcw  
public class SelectionSort implements SortUtil.Sort { {8I.`U  
}cN@[3v  
/* pT$f8xJ  
* (non-Javadoc) r 6Q Q  
* /6_|]ijc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SvR7e C  
*/ 5 QO34t2  
public void sort(int[] data) { 'KPASfC  
int temp; a/< Csad  
for (int i = 0; i < data.length; i++) { f0T ,ul,  
int lowIndex = i; (< =}]v  
for (int j = data.length - 1; j > i; j--) { 07hF2[i  
if (data[j] < data[lowIndex]) { @'=Uq  
lowIndex = j; }Nb8}(6  
} 72,rFYvpK  
} EKp@9\XBC  
SortUtil.swap(data,i,lowIndex); \.g\Zib )  
} )>c>oMgl  
} [= |jZVhT  
b pv= %  
} m:hY`[ f6  
''|#cEc)  
Shell排序: C2{lf^9:&  
D0N9Ksq  
package org.rut.util.algorithm.support; \);4F=h}f  
vip~'  
import org.rut.util.algorithm.SortUtil; nB] >!q  
CNww`PX,zZ  
/** Ig5L$bAM~  
* @author treeroot P<K){V  
* @since 2006-2-2 HfLLlH<L`&  
* @version 1.0 ^#0U  ?9  
*/ %K]euEqs  
public class ShellSort implements SortUtil.Sort{ pc?>cs8  
sp* Vqd  
/* (non-Javadoc) 03j]d&P%d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~l2aNVv;  
*/ LF0sH)e]  
public void sort(int[] data) { vO;I(^Q  
for(int i=data.length/2;i>2;i/=2){ ]#.]/f >-  
for(int j=0;j insertSort(data,j,i); R CkaJ3  
} { m| pl  
} 7G)H.L)$m"  
insertSort(data,0,1); PoIl>c1MS  
} 1$*%"5a  
b2@VxdFN  
/** NuU9~gSQ  
* @param data X(7qZ P~  
* @param j (mlzg=szW  
* @param i KeNL0_ Pw  
*/ oc^Br~ Th  
private void insertSort(int[] data, int start, int inc) { Dk5Zh+^  
int temp; %e@HZ"V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); |!F5.%PY  
} A?G^\I~v  
} !yhh8p3  
} aAy'\T$x.  
|T{C,"9y  
} #Eb5:;  
f>ZyI{  
快速排序: ^`<w&I@  
q%5eVG  
package org.rut.util.algorithm.support; _{|D  
?3O9eZY@  
import org.rut.util.algorithm.SortUtil; Z;h<6[(  
2<hpK!R  
/** h!m_PgRSs  
* @author treeroot X=C1/4wU  
* @since 2006-2-2 &[&r2 >a  
* @version 1.0 SwU\ q]^|Z  
*/ uf&N[M  
public class QuickSort implements SortUtil.Sort{ ^_ojR4  
KzQ3.)/q  
/* (non-Javadoc) 3~#h|?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =~I-]4  
*/ IuZ) [*W  
public void sort(int[] data) { TT9z_Q5~  
quickSort(data,0,data.length-1); 2y%,p{="  
} mYc.x  
private void quickSort(int[] data,int i,int j){ 7u[j/l,  
int pivotIndex=(i+j)/2; Gy[O)PEEh  
file://swap 3/#:~a9Q  
SortUtil.swap(data,pivotIndex,j); :{q"G#  
>O5m5@GK3a  
int k=partition(data,i-1,j,data[j]); $#|gLVOQ  
SortUtil.swap(data,k,j); <94_@3  
if((k-i)>1) quickSort(data,i,k-1); (5Sivw*mP  
if((j-k)>1) quickSort(data,k+1,j); IG3,XW  
vS;1/->WD  
} kPjd_8z2n  
/** ``A 0WN  
* @param data S!{t6'8K  
* @param i Jl "mL  
* @param j n8hRaNHl2  
* @return y ?G_y  
*/ qT/Do?Y  
private int partition(int[] data, int l, int r,int pivot) { ?b!Fa  
do{ 0q rqg]  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Y4IGDY*  
SortUtil.swap(data,l,r); 5 |/9}^T  
} Ez{MU@Fk  
while(l SortUtil.swap(data,l,r); ql<rU@  
return l; L>Mpi$L  
} C%~a`e|/Y  
N0>0z]4;q  
} [Ei1~n)o  
$F.kK%-*  
改进后的快速排序: GTv#nnC  
L^^4=ao0  
package org.rut.util.algorithm.support; Kq.:G%  
gKg-O  
import org.rut.util.algorithm.SortUtil; [j4v]PE  
S^Au#1e   
/** H[b}kZW:a  
* @author treeroot c)&>$S8*  
* @since 2006-2-2 `Bn=?9  
* @version 1.0 ,^8MB.  
*/ NU (AEfF  
public class ImprovedQuickSort implements SortUtil.Sort { _W3Y\cs,-  
$W;b{H=F  
private static int MAX_STACK_SIZE=4096; b6E<r>q  
private static int THRESHOLD=10; t\v+ogbk)  
/* (non-Javadoc) >5G>D~b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C!C|\$)-  
*/ MCh#="L2  
public void sort(int[] data) { HMY@F_qY`u  
int[] stack=new int[MAX_STACK_SIZE]; Ol$WpM  
)~jqW=d 2  
int top=-1; _ IeU+tS  
int pivot; 71C42=AU  
int pivotIndex,l,r; E| :!Q8"%w  
joul<t-  
stack[++top]=0; gh6d&ucQ^  
stack[++top]=data.length-1; N -w(e  
iqW1#)3'R  
while(top>0){ abxDB  
int j=stack[top--]; NcCvm#  
int i=stack[top--]; TzBzEiANn  
2l5KJlfj>k  
pivotIndex=(i+j)/2; c<#<k}y  
pivot=data[pivotIndex]; \M]-bw`  
^Y{D^\} ,  
SortUtil.swap(data,pivotIndex,j); *V(Fn-6(  
(qwdQMj`  
file://partition 6b~28  
l=i-1; 0|D&"/.R#!  
r=j; V[a[i>,Z  
do{ >"3>fche  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9SMiJad<  
SortUtil.swap(data,l,r); 8dK0o>|}  
} <5@PWrU?[[  
while(l SortUtil.swap(data,l,r); nW?R"@Zm  
SortUtil.swap(data,l,j); 69#8Z+dw7  
<Q<+4Y{R  
if((l-i)>THRESHOLD){ 3z;_KmM  
stack[++top]=i; 7+w'Y<mJ  
stack[++top]=l-1; ) uP\>vRy  
} kcB+_  
if((j-l)>THRESHOLD){ &@3m -Z  
stack[++top]=l+1; z&4~x!-_  
stack[++top]=j; fRTo.u  
} T}7uew\v0<  
j[6Raf/(n  
} ) gR=<oa  
file://new InsertSort().sort(data); 1px\K8  
insertSort(data); nws"RcP+Z  
} bXM/2Z?6  
/** #t!}K_  
* @param data 6ri\>QrF  
*/ *@V*~^V"J[  
private void insertSort(int[] data) { VSOz.g>  
int temp; vuz4qCQ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1@XgTL4  
} z2/!m[U  
} "Mmf6hu  
} =7 ,Kf} 6  
wHsB,2H  
} u~Tg&0V30  
V:bV ?lt  
归并排序: I_ "Z:v{  
UBO^EVJ  
package org.rut.util.algorithm.support; U/qE4u1J6M  
2Ohp]G  
import org.rut.util.algorithm.SortUtil; kpob b  
&~5=K  
/** GIHpSy`z  
* @author treeroot 'PdmI<eXQ  
* @since 2006-2-2 klWYuStZ  
* @version 1.0 +yt6(7V*  
*/ ;BH>3VK  
public class MergeSort implements SortUtil.Sort{ J7-^F)lu-  
o4=Yu7L  
/* (non-Javadoc) Gk~l,wV>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1K|@ h&@  
*/ kReG:  
public void sort(int[] data) { "PpjoM ~  
int[] temp=new int[data.length]; nq`q[KV:  
mergeSort(data,temp,0,data.length-1); bdc\  
} :cp   
 [~Hg}-c  
private void mergeSort(int[] data,int[] temp,int l,int r){ i~qfGl p6)  
int mid=(l+r)/2; .6T6 S v  
if(l==r) return ; "EftN5?/  
mergeSort(data,temp,l,mid); qg,Nb  
mergeSort(data,temp,mid+1,r); zXc}W*ymj  
for(int i=l;i<=r;i++){ `hB1b["(  
temp=data; k ~6- cx  
}  ?)tK!'  
int i1=l; #w3ru6*W  
int i2=mid+1; VTe.M[:  
for(int cur=l;cur<=r;cur++){ :X .,  
if(i1==mid+1) nJ3vi}`  
data[cur]=temp[i2++]; OKwOugi0  
else if(i2>r) 0|)19LR  
data[cur]=temp[i1++]; }WP-W  
else if(temp[i1] data[cur]=temp[i1++]; |LYKc.xo  
else I>w^2 (y  
data[cur]=temp[i2++]; 9Yw]Y5l  
} >mIg@knE  
} DacJ,in_I{  
)@:l^$x  
} jv}=&d  
w;`m- 9<Y  
改进后的归并排序: VfSGCe  
"zV']A>4H  
package org.rut.util.algorithm.support; ?9U:g(v  
F>Y9o- o2  
import org.rut.util.algorithm.SortUtil; /B HepD}  
Di??Q_$ak  
/** /! ^P)yU,  
* @author treeroot ~mILA->F  
* @since 2006-2-2 _C+DBA  
* @version 1.0 MguL$W&l  
*/ aMCO"66b  
public class ImprovedMergeSort implements SortUtil.Sort { j|'R$|  
T+TF-] J  
private static final int THRESHOLD = 10; <]#o*_aFP  
- 0~IY  
/* S=R 3"~p  
* (non-Javadoc) lpEDPvD_Vm  
* dm^H5D/A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <lld*IH  
*/ =l|>.\-  
public void sort(int[] data) { <NQyP{p  
int[] temp=new int[data.length]; {$TZ}z"DA  
mergeSort(data,temp,0,data.length-1); E#h~V5Tf  
} .Dv=p B,u  
{^&k!H2  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5 ;vC(Go  
int i, j, k; +Hyk'=.W  
int mid = (l + r) / 2; e(\Q)re5Q  
if (l == r) nu 7lh6o=  
return; 0^\/ERK  
if ((mid - l) >= THRESHOLD) QAaF@Do  
mergeSort(data, temp, l, mid); ;6<zjV7}  
else %aLCH\e  
insertSort(data, l, mid - l + 1); :`<psvd  
if ((r - mid) > THRESHOLD) 7s]Wq6  
mergeSort(data, temp, mid + 1, r); L[]^{ O   
else UA0tFeH  
insertSort(data, mid + 1, r - mid); YmCbxYa7  
4_< nQ9K  
for (i = l; i <= mid; i++) { 4[l^0  
temp = data; <$C<Ba?;?  
} !1-&Y'+  
for (j = 1; j <= r - mid; j++) { ?Y!^I2Y6  
temp[r - j + 1] = data[j + mid]; 9}n,@@  
} o4'v> b  
int a = temp[l]; $n*%v85  
int b = temp[r];  oWrE2U;  
for (i = l, j = r, k = l; k <= r; k++) { 83?1<v0%  
if (a < b) { X<K9L7/*  
data[k] = temp[i++]; ^n71'MW  
a = temp; <UAP~RH{  
} else { QE6El'S  
data[k] = temp[j--]; |B|@GF?:  
b = temp[j]; pU DO7Q]  
} r9 ;`  
} 8|vld3;  
} ruHrv"29  
.WO/=# O  
/** qhwoV4@f  
* @param data kC|Tubs(  
* @param l %LcH>sV  
* @param i w@-b  
*/ 0:PSt_33F  
private void insertSort(int[] data, int start, int len) { w7ZG oh(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); r:#Q9EA  
} uri*lC  
} l qXc  
} Ge~,[If+  
} |Pf(J;'[  
D@5s8xv  
堆排序: M4H"].Zm  
i?W]*V~ply  
package org.rut.util.algorithm.support; .S6ji~;r  
CjmV+%b4  
import org.rut.util.algorithm.SortUtil; 8qmknJC  
(7 ijt  
/** mLULd}g/o  
* @author treeroot skK*OO 2-  
* @since 2006-2-2 Z{#"-UG  
* @version 1.0 OT%V{hD  
*/ Zr9d&|$  
public class HeapSort implements SortUtil.Sort{ W1<.OO\J  
a G@nErdW  
/* (non-Javadoc) yYBNH1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A8mlw#`E8b  
*/ p}f-c  
public void sort(int[] data) { /o\U/I  
MaxHeap h=new MaxHeap(); }"0{zrz  
h.init(data); 7 {nl..`  
for(int i=0;i h.remove(); y-<$bA[K~  
System.arraycopy(h.queue,1,data,0,data.length); uNg'h/^NZ|  
} Vbo5`+NAis  
])S$x{.g  
private static class MaxHeap{ /bi6>GaC:E  
To">DOt  
void init(int[] data){ P!9;} &  
this.queue=new int[data.length+1]; $wgc vySx  
for(int i=0;i queue[++size]=data; '6+Edu~Ho)  
fixUp(size); j;G[%gi6{  
} L2d:.&5  
} "'~|}x1Uv  
Ia'x]#~  
private int size=0; O%prD}x  
NA=#> f+U%  
private int[] queue; x!`b'U\  
A1=_nt)5  
public int get() { =hPG_4#  
return queue[1]; /Ht/F)&P  
} x'zihDOI  
0s )cVYppe  
public void remove() { OWZS3Y+  
SortUtil.swap(queue,1,size--); q;ZLaX\bFl  
fixDown(1); d&5c_6oW  
} xM%`K P.8X  
file://fixdown .<HC[ls  
private void fixDown(int k) { 487YaioB$  
int j; g;l'VA3v  
while ((j = k << 1) <= size) { "bPCOJ[v9  
if (j < size %26amp;%26amp; queue[j] j++; XzW7eO ,A  
if (queue[k]>queue[j]) file://不用交换 .uBO  
break; rAM *\=  
SortUtil.swap(queue,j,k); u]P03B  
k = j; hEWx.  
} ENO? ;  
} b~jIv:9T  
private void fixUp(int k) { epn#qeX  
while (k > 1) { !O 4<I_EY{  
int j = k >> 1; >dyhox2*"  
if (queue[j]>queue[k]) eN2dy-0  
break; G l_\Vy  
SortUtil.swap(queue,j,k); A*a7\id!y  
k = j; "havi,m  
} ob)Q,;8R  
} D DQs42[  
sw[oQ!f  
} 9LH=3Qt  
hHCzj*5  
} <D~6v2$  
V@$GC$;  
SortUtil: tCX9:2c  
-MDO Zz\  
package org.rut.util.algorithm; )@!~8<_"  
;CA ?eI  
import org.rut.util.algorithm.support.BubbleSort; #FEa 5  
import org.rut.util.algorithm.support.HeapSort; UOw~rK   
import org.rut.util.algorithm.support.ImprovedMergeSort; |3S'8Oe CI  
import org.rut.util.algorithm.support.ImprovedQuickSort;  NvUu.  
import org.rut.util.algorithm.support.InsertSort; ud yAP>  
import org.rut.util.algorithm.support.MergeSort; ]{(l;k9=e  
import org.rut.util.algorithm.support.QuickSort; m dC`W&r  
import org.rut.util.algorithm.support.SelectionSort; qC\]"Z`m  
import org.rut.util.algorithm.support.ShellSort; n"mJEkHE  
T~s&)wD  
/** {a]pF.^kf  
* @author treeroot nDyvX1]  
* @since 2006-2-2 =E&24  
* @version 1.0 {5U1`>  
*/ 'BqrJfv  
public class SortUtil { 5.O-(eSa0&  
public final static int INSERT = 1; l8er$8S}  
public final static int BUBBLE = 2; 8oa)qaG1  
public final static int SELECTION = 3; ZyHIMo|  
public final static int SHELL = 4; /.7$`d  
public final static int QUICK = 5; ,c@r` x  
public final static int IMPROVED_QUICK = 6; cT_uJbP+  
public final static int MERGE = 7; TP~( r  
public final static int IMPROVED_MERGE = 8; *C5:#A0  
public final static int HEAP = 9; T}V7SD.  
-Uzc"Lx B  
public static void sort(int[] data) { &1*4%N@'  
sort(data, IMPROVED_QUICK); be&6kG  
} h0T< :X   
private static String[] name={ c=jcvDQ6W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" NR ;q`Xe-  
}; 9cVn>Fb  
Km[]^;6  
private static Sort[] impl=new Sort[]{ Y=5!QLV4  
new InsertSort(), ;:AG2zE!  
new BubbleSort(), / c +,  
new SelectionSort(), N{ : [/  
new ShellSort(), #:]vUQ  
new QuickSort(), xR0~S 3caI  
new ImprovedQuickSort(), yEE|e&#>  
new MergeSort(), hm*Th  
new ImprovedMergeSort(), 2~#ZO?jE6  
new HeapSort() ]&&I|K_  
}; 8o!  
)WaX2uDA?  
public static String toString(int algorithm){ _u#/u2<  
return name[algorithm-1]; :5r:I[FFy  
} T^KCB\\<  
2.^7?ok  
public static void sort(int[] data, int algorithm) {  qJsQb  
impl[algorithm-1].sort(data); .Q l;(Wyl  
} %T3j8fC{s  
hCU)W1q#  
public static interface Sort { p#ZMABlE,P  
public void sort(int[] data); K.:6YXVs<  
} lf?Z{^  
TjKzBAX  
public static void swap(int[] data, int i, int j) { [P.@1mV  
int temp = data; g|tNa/  
data = data[j]; 29R_n)ne  
data[j] = temp; + #|'|}j  
} ;6DR .2}?>  
} M /n[&  
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