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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。 jhjW* F<u  
插入排序: g=8|z#S  
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package org.rut.util.algorithm.support; TFiuz; *|  
7I2a*4}  
import org.rut.util.algorithm.SortUtil; m'G?0^Ft  
/** N7RG5?  
* @author treeroot &0;{lS[N:L  
* @since 2006-2-2 P#vv+]/  
* @version 1.0 3B!&ow<rt  
*/ UUdu;3E=5  
public class InsertSort implements SortUtil.Sort{ $sd3h\P&R  
];d5X  
/* (non-Javadoc) i_oro "%yL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;-Y]X(z>  
*/ mh!N^[=n  
public void sort(int[] data) { g:~?U*f-  
int temp; ZNL;8sI?>  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *@$($<pY&  
} #z-iL!?  
} V7K tbL#  
} ($ [r>)TG  
AAlmG9l&7  
} ~PU1vbv9T  
h%C Eb<  
冒泡排序: Knw'h;,[  
_D7HQ  
package org.rut.util.algorithm.support; H3UX{|[  
L.I}-n  
import org.rut.util.algorithm.SortUtil; 34++Rr [G  
Mc#O+'](f  
/** vV:M S O'r  
* @author treeroot WwCK  K  
* @since 2006-2-2 -N-4l  
* @version 1.0 ul z\x2[Pf  
*/ ei|*s+OZu  
public class BubbleSort implements SortUtil.Sort{ M&}oat*  
_!$Up  
/* (non-Javadoc) Z;"4$@|qE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^w&5@3d  
*/ x3Dg%=R  
public void sort(int[] data) { }v'PY/d.  
int temp; \@ WsF$  
for(int i=0;i for(int j=data.length-1;j>i;j--){ NbQMWU~7  
if(data[j] SortUtil.swap(data,j,j-1); &bS"N)je  
} !S > |Qh  
} ziB]S@U  
} xsY>{/C  
} dEAAm=K,<  
=Nv= Q mO  
} +,{Wcb  
<g/(wSl  
选择排序: Z+`{JE#  
5b{yA~ty  
package org.rut.util.algorithm.support; **w*hd]  
WO+?gu  
import org.rut.util.algorithm.SortUtil; #<WyId(  
<De3mZb  
/** cciAMQhA  
* @author treeroot @3expC  
* @since 2006-2-2 !mErt2UJl  
* @version 1.0 qqz,~EhC  
*/ `1[Sv"  
public class SelectionSort implements SortUtil.Sort { 28UL  
xP5mL3j  
/* TW-zh~|F  
* (non-Javadoc) J?n)FgxS  
* NbdMec  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1 ">d|oC  
*/ B;D:9K  
public void sort(int[] data) { . ;ea]_Z  
int temp; Fgc:6<MGM  
for (int i = 0; i < data.length; i++) { _1>(GK5[  
int lowIndex = i; r3BDq  
for (int j = data.length - 1; j > i; j--) { ~D`oP/6  
if (data[j] < data[lowIndex]) { VT.{[Kl  
lowIndex = j;  8H%I|fm  
} g_Dt} !A\B  
} Z 9 q{r s  
SortUtil.swap(data,i,lowIndex); HA3SQ  
} @L>NN>?SGQ  
} >gOI]*!5  
!+|N<`  
} l~Wk07r3  
GHgEbiY:  
Shell排序: Y9co?!J 5M  
I$6 f.W  
package org.rut.util.algorithm.support; amk42  
,TfI  
import org.rut.util.algorithm.SortUtil; SU#P.y18%  
< jocfTBk  
/** .^`a6>EQ)|  
* @author treeroot +'&_V011<  
* @since 2006-2-2 I}G}+0geV  
* @version 1.0 /YugQ.>| l  
*/ }Cq9{0by?a  
public class ShellSort implements SortUtil.Sort{ sh)) [V"8  
@<w9fzi  
/* (non-Javadoc) _F/lY\vm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M@2Qn-I  
*/ RzY`^A6G6  
public void sort(int[] data) { NV:XPw/  
for(int i=data.length/2;i>2;i/=2){  eS@!\H x  
for(int j=0;j insertSort(data,j,i); '*LN)E> d  
} hZ\W ?r  
} U0bE B  
insertSort(data,0,1); 'B<qG<>  
} m5;[,He  
{@K2WB  
/** xMfv&q=k@  
* @param data b=QGbFf  
* @param j ";Ig%]  
* @param i xP/1@6]_Je  
*/ |`t!aG8  
private void insertSort(int[] data, int start, int inc) { C7 & 6rUX  
int temp; <QoE_z`76  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u+tb83 ~[=  
} e'?d oP  
} ~ ew**@N  
} ^(m6g&$(  
[?f.0q  
} g /@yK  
UG?C=Tf  
快速排序: 5@Lxbe( q  
0) Um W{  
package org.rut.util.algorithm.support; VU0tyj$  
.]ZuG  
import org.rut.util.algorithm.SortUtil; acju!,G  
Py25k 0j!  
/** c'Tu,-  
* @author treeroot 7D~O/#dcc  
* @since 2006-2-2 =5=Vm[  
* @version 1.0 y>cmKE  
*/ w3bH|VnU8;  
public class QuickSort implements SortUtil.Sort{ e %v4,8  
UV8r&O  
/* (non-Javadoc) 8 W<)c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *=0r>]  
*/ dVG UhXN6  
public void sort(int[] data) { JO^ [@  
quickSort(data,0,data.length-1); ^Er`{|o6u  
} oY6|h3T=Q$  
private void quickSort(int[] data,int i,int j){ NUnc"@  
int pivotIndex=(i+j)/2; @)'@LF1Z  
file://swap F)iG D~  
SortUtil.swap(data,pivotIndex,j);  nIDsCu=A  
>/`c mNmb  
int k=partition(data,i-1,j,data[j]); bq&S?! =s  
SortUtil.swap(data,k,j); N[bf.5T  
if((k-i)>1) quickSort(data,i,k-1); ?*mbce[  
if((j-k)>1) quickSort(data,k+1,j); +G[HZ,FL  
|mE +f]7$  
} H|:)K^o  
/** P$ dgO  
* @param data Z *<x  
* @param i  aC }1]7  
* @param j m#K%dR  
* @return eF;1l<<   
*/ b`|MK4M(  
private int partition(int[] data, int l, int r,int pivot) { Tl7:}X<?  
do{ t7+Ic  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); '=5_u  
SortUtil.swap(data,l,r); 5 /jY=/0.a  
} yGG\[I;7  
while(l SortUtil.swap(data,l,r); v*fc5"3eO  
return l; ~_j%nJ &2  
} t\bxd`,  
s]8J+8 <uO  
} nzJi)A./  
`0XbV A  
改进后的快速排序: V >uW|6  
fX$4TPy(h  
package org.rut.util.algorithm.support; P:-/3  
7Z~szD  
import org.rut.util.algorithm.SortUtil; :h^UC~[h 3  
Ci9wF (<k  
/** V;]VwsZ"  
* @author treeroot 14YV#o:  
* @since 2006-2-2 -x\l<\*  
* @version 1.0 [*ovYpj^  
*/ V//q$/&8(  
public class ImprovedQuickSort implements SortUtil.Sort { j~f 7WJ  
d#:J\2V"R  
private static int MAX_STACK_SIZE=4096; SWO!E  
private static int THRESHOLD=10; Afhx`J1KO  
/* (non-Javadoc) :XZom+>2n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {#M{~  
*/ >37}JUG  
public void sort(int[] data) { x  Bw.M{  
int[] stack=new int[MAX_STACK_SIZE]; V+~{a:8[pq  
iwjl--)@K  
int top=-1; 5qfKV&D  
int pivot; 9l_?n@   
int pivotIndex,l,r; (C|V-}/*m  
"<$vU_  
stack[++top]=0; t}+c/ C%b=  
stack[++top]=data.length-1; !,!tNs1 K  
by<@Zwtf  
while(top>0){ \bA'Furp  
int j=stack[top--]; *"sDaN0@R  
int i=stack[top--]; pz}hh^]t  
tUF]f6  
pivotIndex=(i+j)/2; Zw 8b -_  
pivot=data[pivotIndex]; J7^T!7V.  
xQ 3u  
SortUtil.swap(data,pivotIndex,j); U9sub6w6  
'?GZ"C2  
file://partition @5VZ   
l=i-1; kGiw?~t=%  
r=j;  !Ocg  
do{ A2_3zrE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); %_O>Hy|p  
SortUtil.swap(data,l,r); <G?85*Nv_  
} I>~BkR+u%o  
while(l SortUtil.swap(data,l,r); 7:E#c"S q  
SortUtil.swap(data,l,j); 6Q.whV%y  
>,vW  
if((l-i)>THRESHOLD){ Dx*oSP.qX  
stack[++top]=i; GJfNO-  
stack[++top]=l-1; 'c(Y")QP  
} jV&W[xKa  
if((j-l)>THRESHOLD){ E?D{/ k,zZ  
stack[++top]=l+1; FGhrf  
stack[++top]=j; ']e4 !  
} Xtnmh)'K~#  
:?6$}GcW  
} v+o3r]Y6  
file://new InsertSort().sort(data); > BCX%<&  
insertSort(data);  grA L4  
} r74w[6(  
/** >Nl~"J|]q  
* @param data >M85xjXP  
*/ 7gmMqz"z(>  
private void insertSort(int[] data) { *`'%tp"'+  
int temp; eG>Fn6G<g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IVODR  
} Cs=i9.-A  
} Qh%vh ;|^  
} jN>UW}?  
Jn&>Z? @  
} e ;r-}U  
D|3QLG  
归并排序: 3-%~{(T/  
@soW f  
package org.rut.util.algorithm.support; 3edK$B51;  
Vzm7xl [  
import org.rut.util.algorithm.SortUtil; %t.IxMY  
6.=1k  
/** *.Hnt\4|  
* @author treeroot ~x|Sv4M  
* @since 2006-2-2 c2:kZxT  
* @version 1.0 I3b-uEHev  
*/ }kefrT  
public class MergeSort implements SortUtil.Sort{ ~2ei+#d!^  
|q)Q <%VS'  
/* (non-Javadoc) A~SSu.L@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x l=|]8w  
*/ )PNk O3  
public void sort(int[] data) { < _uv!N  
int[] temp=new int[data.length]; F$p,xFH#  
mergeSort(data,temp,0,data.length-1); }gaKO 5  
} a :AcCd)  
-ouL4  
private void mergeSort(int[] data,int[] temp,int l,int r){ o%Q2.  
int mid=(l+r)/2; Ll48)P{+}V  
if(l==r) return ; o7B+f  
mergeSort(data,temp,l,mid); OZ9j3Q;a$  
mergeSort(data,temp,mid+1,r); )d Dmq  
for(int i=l;i<=r;i++){ (:]iHg3  
temp=data; WT N!2b  
} f\w4F'^tj  
int i1=l; -bQvJ`iF  
int i2=mid+1; H}rP{`m  
for(int cur=l;cur<=r;cur++){ 'Q,<_ L"  
if(i1==mid+1) 8Wp1L0$B  
data[cur]=temp[i2++]; CMUphS-KE  
else if(i2>r) `&JA7UD>  
data[cur]=temp[i1++]; 1uzfV)  
else if(temp[i1] data[cur]=temp[i1++]; sM[c\Z]  
else t2<(by!  
data[cur]=temp[i2++]; #R| 4(HlL  
} b~echOj  
} +Q&@2 oY"  
1h{_v!X  
} ||NCVGJG  
C.p*mO&N  
改进后的归并排序: w=2 X[V}  
w` :KexD+  
package org.rut.util.algorithm.support; .1M>KRSr,  
uS.a9 Q(  
import org.rut.util.algorithm.SortUtil; Vdyx74xX  
4}j}8y2)H  
/** B)*%d7=x  
* @author treeroot NYRNop( N#  
* @since 2006-2-2 UkQocZdZ  
* @version 1.0 FiL JF!  
*/ qILr+zH  
public class ImprovedMergeSort implements SortUtil.Sort { 5J3kQ;5Q?  
'-{jn+,  
private static final int THRESHOLD = 10; oaE3Aa  
]P^ +~  
/* 6Wp:W1E{`  
* (non-Javadoc) jL>r*=K)%  
* (>23[;.0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _bsfM;u.%  
*/ H8U*oLlc  
public void sort(int[] data) { x$sQ .aT  
int[] temp=new int[data.length]; 6, ~aV  
mergeSort(data,temp,0,data.length-1); gUQCKNw  
} cMAfW3j: ;  
K*[wr@)u  
private void mergeSort(int[] data, int[] temp, int l, int r) { ['j,S<Bu~  
int i, j, k; @,.H)\a4  
int mid = (l + r) / 2; dno*Usx5d0  
if (l == r) ,B><la87  
return; 6 h):o  
if ((mid - l) >= THRESHOLD) iqYc&}k,  
mergeSort(data, temp, l, mid); 54&2SU$kx  
else 6!N&,I  
insertSort(data, l, mid - l + 1); A}# Mrb  
if ((r - mid) > THRESHOLD) -B!pg7>'##  
mergeSort(data, temp, mid + 1, r); rKxk?}  
else ," v%  
insertSort(data, mid + 1, r - mid); |n/id(R+  
1??RX}8[L+  
for (i = l; i <= mid; i++) { !b=$FOC>  
temp = data; ^&%?Q_]  
} iV=#'yY  
for (j = 1; j <= r - mid; j++) { c$;enAf@  
temp[r - j + 1] = data[j + mid]; "G:>}cs%?  
} AS;{{^mM(  
int a = temp[l]; ~XRr }z_Lq  
int b = temp[r]; suwj1qYJ4  
for (i = l, j = r, k = l; k <= r; k++) { |@nXlZE  
if (a < b) { z=sqO'~  
data[k] = temp[i++]; To+{9"$,  
a = temp; 8*ysuL#  
} else { xPv&(XZR  
data[k] = temp[j--]; h&{pMmS3,  
b = temp[j]; W` V  
} w,7 GC5j\  
} V{r@D!}  
} tuSgh!  
`,O^=HBM  
/** xM,3F jF  
* @param data +TX]~k79Oq  
* @param l =&'j;j  
* @param i KN=Orx7Gy  
*/ }e$);A|  
private void insertSort(int[] data, int start, int len) { ~jaGf  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); .O(UK4Mb  
} d8>D=Ve  
} rv%Xvs B  
} DzEixE-  
} }m?L/Y'}  
wpvaTHo  
堆排序: )m U)7@!  
?/~1z*XUW  
package org.rut.util.algorithm.support; _)Ms9RN  
{+MMqJCa  
import org.rut.util.algorithm.SortUtil; \BDNF< _  
]_h"2|  
/** h4C B1K  
* @author treeroot aw`mB,5U  
* @since 2006-2-2 2iu;7/  
* @version 1.0  O-k(5Zb  
*/ Q1rwTg\  
public class HeapSort implements SortUtil.Sort{ .B@;ch,  
0M"E6z)9  
/* (non-Javadoc) IlVi1`]w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6S(3tvUr  
*/ %K%z<R8  
public void sort(int[] data) { c-,/qn/  
MaxHeap h=new MaxHeap(); LQe<mZ<  
h.init(data); ]=/f`  
for(int i=0;i h.remove(); _Z%C{~,7)x  
System.arraycopy(h.queue,1,data,0,data.length); 8LL);"$  
} *\>7@r[%5  
f%af.cR*  
private static class MaxHeap{ :V [vE h  
X qh+  
void init(int[] data){ _LK(j;6K}  
this.queue=new int[data.length+1]; C5m*pGImG  
for(int i=0;i queue[++size]=data; G100L}d"N  
fixUp(size); SWu=n1J.?H  
} 84k;d;  
} Y9C]-zEv  
~7*HZ:.  
private int size=0; nV<YwqK  
61]6N;kJ;  
private int[] queue; Wrlmo'31  
3wK)vW  
public int get() { i9\Pks#l%  
return queue[1]; w/R^Vwq  
} 2c}kiqi{  
_K8-O>I "  
public void remove() { 3 . @W.GG8  
SortUtil.swap(queue,1,size--); A;kB"Tx  
fixDown(1); mU*GcWbc+  
} ? in&/ZrB  
file://fixdown P iN3t]2  
private void fixDown(int k) { #2}S83 k  
int j; :ZUy(8%Wl  
while ((j = k << 1) <= size) { k;%}%"EVZ  
if (j < size %26amp;%26amp; queue[j] j++; q+N}AKawB  
if (queue[k]>queue[j]) file://不用交换 &B) F_EI  
break; Jyd%!v  
SortUtil.swap(queue,j,k); \"5\hX~dS  
k = j; Yz,*Q<t  
} te1lUQ  
} A2B&X}K|U  
private void fixUp(int k) { 8!1o,=I$  
while (k > 1) { % R'eV<  
int j = k >> 1; %j=7e@   
if (queue[j]>queue[k]) _onHe"%{  
break; ALFw[1X  
SortUtil.swap(queue,j,k); UZ y  
k = j; NoMEe<  
} S"lcePN  
} f6DPah#  
ioZ2J"s  
} 1 @/+ c  
bo]k9FC  
} 2WKA] l;  
Tux~4W  
SortUtil: R^D~ic N  
!OiP<8 ,H  
package org.rut.util.algorithm; FrB19  
Rq;R{a  
import org.rut.util.algorithm.support.BubbleSort;  p.zU9rID  
import org.rut.util.algorithm.support.HeapSort; &fW;;>  
import org.rut.util.algorithm.support.ImprovedMergeSort; l9n 8v\8,o  
import org.rut.util.algorithm.support.ImprovedQuickSort; &4 ]%&mX)-  
import org.rut.util.algorithm.support.InsertSort; fz:F*zT1  
import org.rut.util.algorithm.support.MergeSort; P afmHXx  
import org.rut.util.algorithm.support.QuickSort; 'Y[\[]3[8  
import org.rut.util.algorithm.support.SelectionSort; -2f0CAh~  
import org.rut.util.algorithm.support.ShellSort; m0 `wmM  
%F03cI,  
/** py)V7*CgH  
* @author treeroot  pxP7yJL`  
* @since 2006-2-2 )]v vp{  
* @version 1.0 i^ 1P6B  
*/ X2s=~)`#c  
public class SortUtil { KBXdr52"  
public final static int INSERT = 1; !Qn:PSk  
public final static int BUBBLE = 2; Uq"RyvkpP  
public final static int SELECTION = 3; b+hZ<U/  
public final static int SHELL = 4; :V`q;g  
public final static int QUICK = 5; w^dB1Y7c(W  
public final static int IMPROVED_QUICK = 6; o8bV z2E  
public final static int MERGE = 7; wZ29/{,  
public final static int IMPROVED_MERGE = 8; )\t#e`3  
public final static int HEAP = 9; .Yo# vV  
7n %QP  
public static void sort(int[] data) { ~aBALD0D;  
sort(data, IMPROVED_QUICK); S0\:1B  
} R D)dw  
private static String[] name={ GK:*|jV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &bTadd%0  
}; yBeSvsm  
SdN|-'qf  
private static Sort[] impl=new Sort[]{ x_#yH3kJ  
new InsertSort(), |rsu+0Mtz  
new BubbleSort(), Pf]L`haGN  
new SelectionSort(), { R&F_51)V  
new ShellSort(), b>G!K)MS3  
new QuickSort(), he 9qWL&^G  
new ImprovedQuickSort(), {DAwkJvb]  
new MergeSort(), Rg+V;C C~  
new ImprovedMergeSort(), xqLLoSte  
new HeapSort() GQT|T0>Ro  
}; ,>e)8  
4 uD!-1LT@  
public static String toString(int algorithm){ c}$?k@=  
return name[algorithm-1]; z;1yZ4[G  
} =U2`]50  
RKRk,jRL  
public static void sort(int[] data, int algorithm) { }[? X%=  
impl[algorithm-1].sort(data);  gryC#  
} ) 3Eax_?Z  
~G ,n>  
public static interface Sort { 3]/w3|y  
public void sort(int[] data); t hTY('m  
} V&[|%jm&   
pvkru-i]  
public static void swap(int[] data, int i, int j) { 4WU 6CN  
int temp = data; Zn&X Uvdl  
data = data[j]; cy%^P^M  
data[j] = temp; SkVW8n*s  
} ?;!l-Dy  
} -k")#1  
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