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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。 C4$:mJ>y  
插入排序: 1T&Rc4$Sn7  
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package org.rut.util.algorithm.support; {Azn&|%.t  
9pn>-1NJ  
import org.rut.util.algorithm.SortUtil; BaI $S>/Q  
/** <W8t|jt  
* @author treeroot 4*n#yVb/  
* @since 2006-2-2 +n0r0:z0  
* @version 1.0 c_grPk2O4  
*/ 796\jf$  
public class InsertSort implements SortUtil.Sort{ HSUI${<  
0oZsb\  
/* (non-Javadoc) g#]" hn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jzji&A~  
*/ f"[J "j8  
public void sort(int[] data) { *D}0 [|O  
int temp; f5*k7fg  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <*ZJaBwWU~  
} 4rT*tW"U  
} `3H4Ajzcc  
} !^#jwRpeN  
C@ZK~Y_g  
} 96cJ8I8  
 .~A*=  
冒泡排序: GYxM0~:$k  
8H,4kY?Z  
package org.rut.util.algorithm.support; ]B"'}%>ez  
jdZ~z#`(!:  
import org.rut.util.algorithm.SortUtil; H(c72]@Vg  
lf{e[!ML'  
/** ~)LH='|h\}  
* @author treeroot k %e^kej  
* @since 2006-2-2 {R<Ea @LV+  
* @version 1.0 /@ !CKh`  
*/ |:[tNs*,O  
public class BubbleSort implements SortUtil.Sort{ G@FI0\t  
q\Q{sv_  
/* (non-Javadoc) TNCgaTJ{h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d<!3`qe  
*/ <9E0iz+j  
public void sort(int[] data) { ptatzp]c#  
int temp; 5Wyz=+?m|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6vuq1  
if(data[j] SortUtil.swap(data,j,j-1); [Aj Q#;#Q  
} LZJA4?C  
} Ee)[\Qjn  
} =L%DX#8  
} k Iw`P[  
)[H{yQ  
} OaJB=J%  
;AR{@Fu.  
选择排序:  ~\,w {  
fbyQjvURnC  
package org.rut.util.algorithm.support; F|Mi{5G%  
ZUz ^!d  
import org.rut.util.algorithm.SortUtil; Re:jVJg Bz  
bmNq[}  
/** 7{e{9QbJ4  
* @author treeroot H gTUy[(  
* @since 2006-2-2 HX'FYt/?t  
* @version 1.0 :q8b;*:  
*/ 3czeTj  
public class SelectionSort implements SortUtil.Sort { UNijFGi  
=PRx?q`d  
/* S)QAXjH  
* (non-Javadoc) ;Op3?_  
* pi=-#g(2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vd".u'r  
*/ R>DaOH2K*  
public void sort(int[] data) { (8v7|Pe8  
int temp; w%WF-:u7|  
for (int i = 0; i < data.length; i++) { kKD`rfyG \  
int lowIndex = i; b'VV'+|  
for (int j = data.length - 1; j > i; j--) { {o5V7*P;_  
if (data[j] < data[lowIndex]) { hjaT^(Y  
lowIndex = j; O^/Maa/D1  
} FMkOo2{  
} >fH=DOz$&  
SortUtil.swap(data,i,lowIndex); u` oq(?|  
} Fk(JSiU  
} j1_ @qns{  
|mdi]TL  
} D9`0Dr}/2  
;Yi4Xva@  
Shell排序: iA8U Yd3Q  
0sI1GhVR  
package org.rut.util.algorithm.support; y=In?QN{6*  
QO"oEgB`+Z  
import org.rut.util.algorithm.SortUtil; da1]mb=4 5  
GN KF&M  
/** uB!kM  
* @author treeroot 'n<iU st  
* @since 2006-2-2 nz9DLAt  
* @version 1.0 y5Tlpi`g  
*/ )p!7 #v/@f  
public class ShellSort implements SortUtil.Sort{ r]OK$Ql  
U4 13?Pe  
/* (non-Javadoc) 'J,T{s1J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J_>w3uY  
*/ >^Se'SE]  
public void sort(int[] data) { Hm+ODv9  
for(int i=data.length/2;i>2;i/=2){ `ptj?6N-  
for(int j=0;j insertSort(data,j,i); S1D@vnZ3O\  
} m*$|GW9  
} ]f]<4HD=i  
insertSort(data,0,1); 8/0Y vh  
} *3T| M@Y  
h"H2z1$  
/** k}KC/d9.z  
* @param data W8lx~:v  
* @param j 5,)Q w  
* @param i LH:i| I  
*/ (`? y2n)~W  
private void insertSort(int[] data, int start, int inc) { /y^7p9Z`  
int temp; ?$e9<lsQq)  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); VUI|.76g  
} tzy'G"P|  
} )xb|3&+W  
} %,hV[[@.  
aR,}W\6M  
} TYI7<-Mp:[  
!QDQ_  
快速排序:  9CCkqB/  
*D'$"@w3  
package org.rut.util.algorithm.support; ='TE,et@d  
~+Z{Q25R  
import org.rut.util.algorithm.SortUtil; 8foJI^3  
fX jG5Tv  
/** w '3#&k+  
* @author treeroot gKOOHUCb  
* @since 2006-2-2 ,;M4jc {  
* @version 1.0 nenU)*o  
*/ ~EK'&Y"1  
public class QuickSort implements SortUtil.Sort{ O5H9Y}i]  
N{-]F|XX  
/* (non-Javadoc) z5W@`=D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <cA/<3k)  
*/ "zIFxDR#  
public void sort(int[] data) { T97]P-}  
quickSort(data,0,data.length-1); 4(-b x.V  
} 1 { , F  
private void quickSort(int[] data,int i,int j){ 1^i Pji/  
int pivotIndex=(i+j)/2; M>M`baM1  
file://swap F4Y @ B  
SortUtil.swap(data,pivotIndex,j); %T7nO%p  
5s{ABJ\@V  
int k=partition(data,i-1,j,data[j]); 0euuT@_$  
SortUtil.swap(data,k,j); Q:ezifQ  
if((k-i)>1) quickSort(data,i,k-1); 6%Be36<  
if((j-k)>1) quickSort(data,k+1,j); V 21njRS  
YDGS}~m~Q  
} IF]lHB  
/** Cuc$3l(%  
* @param data Agrp(i"\@  
* @param i OLI$1d_  
* @param j eHDef  
* @return Tr^nkD{  
*/ k1VT /u  
private int partition(int[] data, int l, int r,int pivot) { V^Hu3aUx8  
do{ =}PdH`S  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); .'a&3 3J  
SortUtil.swap(data,l,r); r!,}Z=cGe  
} t'm;:J1  
while(l SortUtil.swap(data,l,r); C{2xHd/*  
return l; m!U9m  
} oA1a/[#  
inlk++Og  
} "(qw-kil  
fABe  
改进后的快速排序: Y<0 4RV  
xnE|Umz  
package org.rut.util.algorithm.support; HNL42\Kz!  
)/t?!T.[  
import org.rut.util.algorithm.SortUtil; C ;(t/zh  
42L @w  
/** lDmtQk-SN  
* @author treeroot fu$R7  
* @since 2006-2-2 M@W[Bz  
* @version 1.0 sl*5Y#,|1  
*/ O0>A+o[1F  
public class ImprovedQuickSort implements SortUtil.Sort { xAggn  
"*O4GPj  
private static int MAX_STACK_SIZE=4096; 2S' {!A  
private static int THRESHOLD=10; _j_x1.l  
/* (non-Javadoc) -|rLs$V1r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !;_H$r0  
*/ `yF`x8  
public void sort(int[] data) { -X+H2G  
int[] stack=new int[MAX_STACK_SIZE]; wb Iq&>p  
c)0amM  
int top=-1; $wYFEz  
int pivot; z#F.xVg'  
int pivotIndex,l,r; DS|KkTy3  
sKyPosnP  
stack[++top]=0; fg#x7v4O  
stack[++top]=data.length-1; ly WwGR  
^}f -!nf[  
while(top>0){ fh^lO ^  
int j=stack[top--]; -+t]15  
int i=stack[top--]; *%vwM7  
`>o?CIdp  
pivotIndex=(i+j)/2; Dz./w  
pivot=data[pivotIndex]; TE )gVE]  
N$[$;Fm:  
SortUtil.swap(data,pivotIndex,j); 9C t`  
yz2Ci0Dwy  
file://partition 2YuN~-  
l=i-1; |j3'eW&=  
r=j; 0j(M* sl  
do{ <5=JE*s$NS  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <)*2LBF@]  
SortUtil.swap(data,l,r); SR*wvQnOx  
} ?|e'Gbb_  
while(l SortUtil.swap(data,l,r); (Z5##dS3  
SortUtil.swap(data,l,j); @E.k/G!~Nb  
) _ I,KEe  
if((l-i)>THRESHOLD){ #.[AK_S5&  
stack[++top]=i; ()sTb>L  
stack[++top]=l-1; JY!l!xH(6  
} 7=]i~7uy  
if((j-l)>THRESHOLD){ , *qCf@$I  
stack[++top]=l+1; +\Q?w?DE|  
stack[++top]=j; m*X[ Jtr  
} <}6{{&mT4  
Jgu94.;5  
} -CH`>  
file://new InsertSort().sort(data); n41@iK2l  
insertSort(data); [7m1Q<  
} ny-7P;->8  
/** I]!^;))  
* @param data $;G{Pyp  
*/ /=uMk]h  
private void insertSort(int[] data) { Vx_rc%'  
int temp; %r)avI  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); F_uY{bg  
} 3?E8\^N\n  
} /m _kn  
} V#ev-\k}@  
-G,^1AL>  
} [Pe#kzLX  
$(Ugtimdv  
归并排序: W0jZOP5_.$  
7kKy\W  
package org.rut.util.algorithm.support; H&b3{yOa  
)rLMIk  
import org.rut.util.algorithm.SortUtil; u9=SpgB#  
G#Ou[*O'  
/** #GaxZ  
* @author treeroot LflFe@2  
* @since 2006-2-2 j'i0*"x  
* @version 1.0 ZtVAEIZ)  
*/ U }Hwto`R  
public class MergeSort implements SortUtil.Sort{ (wmBjQ]B<  
wiX~D  
/* (non-Javadoc) 9{j66  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,%bhyww<  
*/ U=sh[W  
public void sort(int[] data) { Z['\61  
int[] temp=new int[data.length]; M\b")Tu{0  
mergeSort(data,temp,0,data.length-1); PN+G:Qv  
} hl&-\dc+  
\RQ='/H*  
private void mergeSort(int[] data,int[] temp,int l,int r){ }Vu\(~  
int mid=(l+r)/2; 6I_Hd>4  
if(l==r) return ; -oz`"&%  
mergeSort(data,temp,l,mid); ^BZkHAp  
mergeSort(data,temp,mid+1,r); bU 63X={  
for(int i=l;i<=r;i++){ ,D6v4<jh  
temp=data; m\ /(w_/?  
} ZWV|# c<G  
int i1=l; mYB`)M*Y  
int i2=mid+1; @+U,Nzd  
for(int cur=l;cur<=r;cur++){ H(0q6~|  
if(i1==mid+1) UkCnqNvx  
data[cur]=temp[i2++]; N^VD=<#T  
else if(i2>r) /RLq>#:h**  
data[cur]=temp[i1++]; `nR%Cav,U  
else if(temp[i1] data[cur]=temp[i1++]; CBf7]n0H  
else CLKov\U\  
data[cur]=temp[i2++]; CGw--`#\  
} &@"]+33  
} ?B.~ AUN  
mxSKG> O  
} ! 0/z>#b  
!~<siy  
改进后的归并排序: IGX:H)&*  
O gmO&cE  
package org.rut.util.algorithm.support; 8|twV35  
xa( m5P  
import org.rut.util.algorithm.SortUtil; 2}}?'PwwT  
%,b X/!  
/** &Y@#g9G  
* @author treeroot 3HyhEVR-#~  
* @since 2006-2-2 ANH4IYd3  
* @version 1.0 :<#`_K~'  
*/ E& 36H  
public class ImprovedMergeSort implements SortUtil.Sort { 09M;}4ev&7  
o7&4G$FX~  
private static final int THRESHOLD = 10; Bd bJ< Is  
FqA3  {  
/* -U2mfW  
* (non-Javadoc) sPNfbCOz  
* s_jBu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4aZCFdc  
*/ c(- Mc6  
public void sort(int[] data) { P 2n2 Qt2  
int[] temp=new int[data.length]; MrE<vw@he  
mergeSort(data,temp,0,data.length-1); Ni[4OR$-O  
} Oi:JiD=  
KiLvI,9y  
private void mergeSort(int[] data, int[] temp, int l, int r) { z)F#u:t  
int i, j, k;  *2u E  
int mid = (l + r) / 2; 8dT'xuch  
if (l == r) rlok%Rt4Z  
return; }\v^+scD  
if ((mid - l) >= THRESHOLD) 5IMSNGS  
mergeSort(data, temp, l, mid); {g/wY%u=  
else hN`gB#N3  
insertSort(data, l, mid - l + 1); Pn TZ/|  
if ((r - mid) > THRESHOLD) jeN1eM8 WI  
mergeSort(data, temp, mid + 1, r); B{, Bno  
else h"QbA"  
insertSort(data, mid + 1, r - mid); c|wCKn}`  
EiV=RdL  
for (i = l; i <= mid; i++) { j.-VJo)   
temp = data; hQh9ok8S  
} Z$K+ 7>^  
for (j = 1; j <= r - mid; j++) { j~ym<-[{a  
temp[r - j + 1] = data[j + mid]; g"t^r3  
} !"4w&bQ  
int a = temp[l]; snk$^  
int b = temp[r]; $CtCOwKZ  
for (i = l, j = r, k = l; k <= r; k++) { GCE!$W  
if (a < b) { ?)A2Kw>2  
data[k] = temp[i++]; 1czG55 |  
a = temp; d5xxb _oE  
} else { y[HQBv  
data[k] = temp[j--]; *)VAaGUX>  
b = temp[j]; ;?9A(q_Z  
} 7#4%\f+'t  
} "!&B4  
} 0*(K DDv  
q G ;-o)h  
/** zi!#\ s^  
* @param data 2o{@nN8%  
* @param l %= u/3b:o  
* @param i $>vy(Y  
*/ m^$5K's&  
private void insertSort(int[] data, int start, int len) { qMgfMhQ7DU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ^E@@YV  
} '_Wt }{h  
} #MTj)P,  
} 5}<[[}(  
} %<U{K;  
.Vx|'-u  
堆排序: GEE ]Kr  
;e;\q;GP  
package org.rut.util.algorithm.support; >_Uj?F:  
k8&FDz  
import org.rut.util.algorithm.SortUtil; Fe= "EDh  
?R?Grw)`H  
/** r=csi  
* @author treeroot A o3HX  
* @since 2006-2-2 i>Iee^_(  
* @version 1.0 7Jx%JgF  
*/ )*[ ""&  
public class HeapSort implements SortUtil.Sort{ AUAI3K?  
iPU% /_>  
/* (non-Javadoc) }K8Lm-.=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7z<Cu<  
*/ QFzFL-H~N  
public void sort(int[] data) { Yn 1?#%%  
MaxHeap h=new MaxHeap(); VN|G5*  
h.init(data); Pf8u/?/  
for(int i=0;i h.remove(); fNxw&ke8&  
System.arraycopy(h.queue,1,data,0,data.length); yisLypM*  
} _'c+fG \  
%8Yyj{^!(  
private static class MaxHeap{ _W9&J&l0so  
rbh[j@s@  
void init(int[] data){ zUQe0Gc.b^  
this.queue=new int[data.length+1]; b7'F|h^  
for(int i=0;i queue[++size]=data; <|JU(B  
fixUp(size); A70(W{6a9@  
} _<u;4RO(s  
} >-<F)  
Yq0# #__  
private int size=0; X8b#[40:  
{bTeAfbf]  
private int[] queue; $I(}r3r  
DQ5W6W  
public int get() { cj^bh  
return queue[1]; FQ##397  
} ('HxHOh2  
,eK2I Ao  
public void remove() { [0op)Kn  
SortUtil.swap(queue,1,size--); 7sguGwg)_  
fixDown(1); N?^_=KE@  
} [|z'"Gk{  
file://fixdown ^N{X "  
private void fixDown(int k) { \P@S"QO  
int j; pE(sV{PD  
while ((j = k << 1) <= size) { lbofF==(  
if (j < size %26amp;%26amp; queue[j] j++; z `@z  
if (queue[k]>queue[j]) file://不用交换 82 .HH5Z{  
break; gUb "3g0  
SortUtil.swap(queue,j,k); w 06gY  
k = j; #W^_]Q=5R'  
} \d5}5J]a&n  
} ~,G]glu8  
private void fixUp(int k) { ?1$\pq^  
while (k > 1) { HSql)iT  
int j = k >> 1; &z QWIv  
if (queue[j]>queue[k]) l]u7.~b  
break; +Z$a1 Y@  
SortUtil.swap(queue,j,k); 7yUvL8p-  
k = j; x Zg7Jg  
} "MTq{f2?  
} C,3T!\  
[$oM  
} Hi7G/2t@`  
d1lH[r!Z  
} gQ,4xTX  
No~ 6s.H  
SortUtil: =ty2_6&>  
K]MzP|T,  
package org.rut.util.algorithm; ;Lqm#]C  
I2W{t l  
import org.rut.util.algorithm.support.BubbleSort; :^.u-bHI  
import org.rut.util.algorithm.support.HeapSort; b8e*Pv/  
import org.rut.util.algorithm.support.ImprovedMergeSort; N&,"kRFFo  
import org.rut.util.algorithm.support.ImprovedQuickSort; _Ua PwJ  
import org.rut.util.algorithm.support.InsertSort; XJ _%!  
import org.rut.util.algorithm.support.MergeSort; ZgK@Fl*k  
import org.rut.util.algorithm.support.QuickSort; tB !|p6  
import org.rut.util.algorithm.support.SelectionSort; gvK"*aIj  
import org.rut.util.algorithm.support.ShellSort; ^:U;rHY  
%WmZ ]@M  
/** s1v{~xP  
* @author treeroot %27G2^1  
* @since 2006-2-2 H'']J9O  
* @version 1.0 Mi;Tn;3er  
*/ LsnXS9_  
public class SortUtil { >7W"giWP  
public final static int INSERT = 1; 2t.fD@  
public final static int BUBBLE = 2; TiTYs  
public final static int SELECTION = 3; 5%#i79z&B  
public final static int SHELL = 4; -/1d&  
public final static int QUICK = 5; l2r>|CGQ[  
public final static int IMPROVED_QUICK = 6; vevx|<9,  
public final static int MERGE = 7; r@;$V_I  
public final static int IMPROVED_MERGE = 8; '2j~WUEmg  
public final static int HEAP = 9; sgR 9d  
"hfw9Qm  
public static void sort(int[] data) { : qr} M  
sort(data, IMPROVED_QUICK); @!Y.935/0  
} ?!rU |D  
private static String[] name={ z[%[bs2{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :> x:(K  
}; ^=3 ^HQ'Zm  
}&=uZ:  
private static Sort[] impl=new Sort[]{ sM<:C  
new InsertSort(), 5'),)  
new BubbleSort(), p+!f(H  
new SelectionSort(), ^1()W,B~w  
new ShellSort(), @i\7k(9:A  
new QuickSort(), *pY/5? g  
new ImprovedQuickSort(), eO~eu]r  
new MergeSort(), ,Z >JvTnH  
new ImprovedMergeSort(), 5BZ+b_A>VV  
new HeapSort() K T%i,T  
}; JHHb|  
#V,LNX)  
public static String toString(int algorithm){ 9{T 8M  
return name[algorithm-1]; E`U &Z  
} u87=q^$  
rGGS]^  
public static void sort(int[] data, int algorithm) { uT#Acg  
impl[algorithm-1].sort(data); oXvdR(Sb^  
} ik8|9m4/  
9$n+-GSK  
public static interface Sort { 7O]J^H+7  
public void sort(int[] data); "Wxo[I  
} oA5<[&~<  
OA\vT${5  
public static void swap(int[] data, int i, int j) { ccIDMJ=2  
int temp = data; 6hR^qdHg  
data = data[j]; '3IkPy1Uz  
data[j] = temp; oD Q9.t  
} Zjw!In|vC  
} 02;f2;I  
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