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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。 5y7rY!]Bf  
插入排序: fY@Y$S`Fh  
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package org.rut.util.algorithm.support; BKDs3?&  
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import org.rut.util.algorithm.SortUtil; wD|,G!8E2  
/**  Ad)Po  
* @author treeroot J(*q OGBD  
* @since 2006-2-2 $mvcqn;  
* @version 1.0 :fI|>I ~  
*/ {@Y|"qIN  
public class InsertSort implements SortUtil.Sort{ DA)+)PhY7K  
zoXCMBg[  
/* (non-Javadoc) :TU;%@7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \F]X!#&+  
*/ ":E^&yQ  
public void sort(int[] data) { K8NoY6  
int temp; ( zQ)EHRD  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CZB!vh0  
} (9:MIP  
} ^)ouL25Z*2  
} b_= $W  
D Q7+  
} (_G&S~@.  
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冒泡排序: j-wSsjLk  
F"2v5F@  
package org.rut.util.algorithm.support; 5wM*(H^c[  
cIqk=_]  
import org.rut.util.algorithm.SortUtil; P3|_R HIb  
P7GuFn/p~2  
/** @UCI^a~w  
* @author treeroot utIR\e#:B  
* @since 2006-2-2 Cz=HxU80J  
* @version 1.0 ]v=*WK  
*/ ([~9v@+  
public class BubbleSort implements SortUtil.Sort{ D BDHe-1[+  
noY~fq/U  
/* (non-Javadoc) ,|hM`<"?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %:I\M)t}k  
*/ a12Q/K  
public void sort(int[] data) { O~t]:p9_  
int temp; Jt79M(Hp!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ b-pZrnZ!  
if(data[j] SortUtil.swap(data,j,j-1); w,hl<=:(FB  
} @Qw~z0PE<l  
} oRl~x^[%[-  
} [RtTi<F^  
} F?!P7 zW  
"`P/j+-rt  
} ]dzBm!u  
nx #0*r}5  
选择排序: 8U,VpuQ:  
v+a$Xh3Y~  
package org.rut.util.algorithm.support; l1(6*+  
4 DhGp  
import org.rut.util.algorithm.SortUtil; 3m RP.<=  
x*}41;j}C  
/** !cP2,l 'f  
* @author treeroot >b2j j+8  
* @since 2006-2-2 ? yL3XB>  
* @version 1.0 2tz%A~}4  
*/ uTsxSkHb/  
public class SelectionSort implements SortUtil.Sort { '@4M yg* b  
L$R"?O7  
/* )xJCH9h  
* (non-Javadoc) UQq ,Xq  
* Y0nnn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 50,`=Z  
*/ GyU9,>|~T  
public void sort(int[] data) { ;bz|)[4/  
int temp; UC3&:aQ!  
for (int i = 0; i < data.length; i++) { Q;9-aZ.H  
int lowIndex = i; m\9R;$ \  
for (int j = data.length - 1; j > i; j--) { B4tC3r  
if (data[j] < data[lowIndex]) { #cHH<09 rl  
lowIndex = j; jA<(#lm;  
} 2~`lvx  
} p~(+4uA  
SortUtil.swap(data,i,lowIndex); %:yp>nm  
} T@K= * p  
} #vwK6'z  
U;SReWqU  
} Vq8G( <77  
x9ll0Ht  
Shell排序: xIt'o(jQH  
KGM9 b  
package org.rut.util.algorithm.support; o%EzK;Df  
E6 g]EE  
import org.rut.util.algorithm.SortUtil; u^6@!M  
Lzr&Q(mL  
/** r4YiXss  
* @author treeroot ,W8E U  
* @since 2006-2-2 "|N58%  
* @version 1.0 ;$a+ >  
*/ `ef C4#*!!  
public class ShellSort implements SortUtil.Sort{ 0H$6_YX4 A  
2/WtOQI B  
/* (non-Javadoc) ye<b`bL2.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <K g=?wb  
*/ EF>vu+YK  
public void sort(int[] data) { }na0  
for(int i=data.length/2;i>2;i/=2){ +N6IdDN3  
for(int j=0;j insertSort(data,j,i); V8w7U:K  
} k kZ2Jxvx  
} h+gaKh=k+  
insertSort(data,0,1); hD> ]\u  
} \T'.b93~B  
C33BP}c]  
/** "U"phLX  
* @param data lQS(\}N  
* @param j -/V,<@@T  
* @param i -(dtAo6  
*/ k!Ym<RD%N  
private void insertSort(int[] data, int start, int inc) { aM7e?.rU  
int temp; >^=;b5I2K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 40e(p/Qka  
} 'fK3L<$z#m  
} (U{,D1?  
} 4Wd H!z  
{g C?kp  
} *M?[Gro/  
~hZr1hT6L  
快速排序: N&uRL_X .  
U#iGR5&^3  
package org.rut.util.algorithm.support; /Hs\`Kg"!  
!V'~<&  
import org.rut.util.algorithm.SortUtil; I!?)}d  
9xN`  
/** /n2qW.qJ>  
* @author treeroot FUP0X2P   
* @since 2006-2-2 a'%eyN  
* @version 1.0 XtZeT~/7RT  
*/ 3v91yMx  
public class QuickSort implements SortUtil.Sort{ c W1`[b  
| |u  
/* (non-Javadoc) [t6Y,yo&h4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) */APe #  
*/ Al3*? H&  
public void sort(int[] data) { j5gL 67B  
quickSort(data,0,data.length-1); d4m@u$^1B  
} )Z*nm<=  
private void quickSort(int[] data,int i,int j){ {UFs1  
int pivotIndex=(i+j)/2; ]IclA6  
file://swap Kr'Yz!  
SortUtil.swap(data,pivotIndex,j); G@3Jw[t  
h+!@`c>)Y  
int k=partition(data,i-1,j,data[j]); |})v, o B  
SortUtil.swap(data,k,j); 7<*,O&![|  
if((k-i)>1) quickSort(data,i,k-1); C"0vMUZ  
if((j-k)>1) quickSort(data,k+1,j); ;04< 9i  
zEKVyZd*{  
} ;lQ>>[*  
/** a0jzt!ci  
* @param data `)tIXMn  
* @param i ja4zLf(<  
* @param j ?sW}<8\  
* @return J)EL<K$Z[  
*/ yf2P6b\  
private int partition(int[] data, int l, int r,int pivot) { [;Jq=G8&t  
do{ 4iv&!hAc;  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Mt*V-`+\  
SortUtil.swap(data,l,r); wzF%R {;  
} hs*n?vxp3  
while(l SortUtil.swap(data,l,r); i~LY  
return l; z~th{4#E ;  
} B"rO  
T|2v1Vj  
} r3+   
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改进后的快速排序: T7^?j :kJ/  
6!C>J#T  
package org.rut.util.algorithm.support;  Cwl:  
`<6FCn4{X  
import org.rut.util.algorithm.SortUtil; q8}he~a  
2;x+#D8  
/** m7u" awM^  
* @author treeroot r&_e3#]*  
* @since 2006-2-2 3a'#Z4Z-  
* @version 1.0 k3T374t1b  
*/ x@@bC=iY$  
public class ImprovedQuickSort implements SortUtil.Sort { !xU[BCbfYV  
3U'l'H,  
private static int MAX_STACK_SIZE=4096; qFI19`?8E  
private static int THRESHOLD=10; T@Z-;^aV  
/* (non-Javadoc) #itZ~tol  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iZ4"@G:,  
*/ wlEK"kKU  
public void sort(int[] data) { ?KWo1  
int[] stack=new int[MAX_STACK_SIZE]; @SI,V8i  
rN,T}M= 2  
int top=-1; JL [!8NyU  
int pivot; ByacSN  
int pivotIndex,l,r; 6#Rco%07zI  
5z:#Bl-,L  
stack[++top]=0; T!i$nI&  
stack[++top]=data.length-1; Hzz v 6k  
MpTOC&NG%s  
while(top>0){ h@TP=  
int j=stack[top--]; !="8ok+  
int i=stack[top--]; Tv9\` F[  
Pj_*,L`mZ  
pivotIndex=(i+j)/2; f`iDF+h<6  
pivot=data[pivotIndex]; <`?%Cz AO  
j<k-w  
SortUtil.swap(data,pivotIndex,j); ght3#  
Y ` Z,52  
file://partition Ro;I%j  
l=i-1; FF;Fo}no-  
r=j; nb ?(zDJ8  
do{ Xpt9$=d  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); sY1.z5"Mm  
SortUtil.swap(data,l,r); 0\, !  
} >WLHw!I!6  
while(l SortUtil.swap(data,l,r); D G|v' #  
SortUtil.swap(data,l,j); D/=k9[b!  
x[u6_6=q9  
if((l-i)>THRESHOLD){ B4 5#-V  
stack[++top]=i; aj/+#G2  
stack[++top]=l-1; .Hk.'>YR  
} h6}rOchj  
if((j-l)>THRESHOLD){ $/$Hi U`.  
stack[++top]=l+1; Z:^ S-h  
stack[++top]=j; LIKQQ  
} IfT: 9 &  
~Orz<%k.  
} 4P"XT  
file://new InsertSort().sort(data); ; rNX  
insertSort(data); c`/=)IO4%  
} 'ka$@,s:  
/** wEN[o18{  
* @param data H7k@Br  
*/ RS#C4NG  
private void insertSort(int[] data) { > 6=3y4tP  
int temp; 4TYtgP1  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6!N2B[9  
} "d /uyS$6  
} :G] t=vr1  
} oX'@,(6)  
-%Rbd0gVH\  
} t<j_` %`8  
r8!pk~R5]  
归并排序: Z~}9^(qc  
Qc=-M'9  
package org.rut.util.algorithm.support; REh\WgV!u  
rQJ\Y3.  
import org.rut.util.algorithm.SortUtil; 7j29wvSp5  
>;R7r|^k  
/** ZE= Yn~XM  
* @author treeroot `U|zNizO  
* @since 2006-2-2 C\OZs%]At  
* @version 1.0 $RunGaX!=N  
*/ a5/Dz&>j6  
public class MergeSort implements SortUtil.Sort{ mx}4iO:Xp  
7\ZSXQy1W  
/* (non-Javadoc) =''b`T$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e Qk5:{[  
*/ U0iV E+)Bt  
public void sort(int[] data) { Qpj[]c5  
int[] temp=new int[data.length]; q~Al[`K  
mergeSort(data,temp,0,data.length-1); Koj9]2<0  
} <M}O&?N 8x  
k*!iUz{]  
private void mergeSort(int[] data,int[] temp,int l,int r){ .p?SPR  
int mid=(l+r)/2; lN0u1)'2  
if(l==r) return ; #&fu"W+D96  
mergeSort(data,temp,l,mid); JG7K-W|!c  
mergeSort(data,temp,mid+1,r); r. (}  
for(int i=l;i<=r;i++){ @; I9e  
temp=data; ;>;it5 l=  
} ,V^$Meh  
int i1=l; ^HtB!Xc  
int i2=mid+1; +_u~Np  
for(int cur=l;cur<=r;cur++){ ?STO#<a  
if(i1==mid+1) "dE[X` }=  
data[cur]=temp[i2++]; 4S[)5su  
else if(i2>r) s&<76kwl  
data[cur]=temp[i1++]; -YmIRocx  
else if(temp[i1] data[cur]=temp[i1++]; j)Kd'Va  
else 25j\p{*  
data[cur]=temp[i2++]; ZLPj1L  
} q)KOI` A  
} ,'9R/7%s  
065=I+Vo  
} i}i >ho-8  
|JP'j1 Ka  
改进后的归并排序: Df:/r%  
bR~5 :A^  
package org.rut.util.algorithm.support; R,=8)OI2  
(0.JoeA`y  
import org.rut.util.algorithm.SortUtil; s.n:;8RibP  
bD|"c  
/** 9zrTf%m F  
* @author treeroot wzJdS}Yy!y  
* @since 2006-2-2 Q&_#R(3j;  
* @version 1.0 ;ceg:-Zqo  
*/ g jzWW0C  
public class ImprovedMergeSort implements SortUtil.Sort { moh,aB#  
64`l?F  
private static final int THRESHOLD = 10; [?;L  
&^uaoB0  
/* YI> xxWA  
* (non-Javadoc) e"XolM0IM  
* g)D@4RM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _@gg,2 u-  
*/ W1t_P&i  
public void sort(int[] data) { i[{*(Y$L  
int[] temp=new int[data.length]; sG[qlzR=8  
mergeSort(data,temp,0,data.length-1); VGu(HB8n#  
} DIWyv-  
>i.$s  
private void mergeSort(int[] data, int[] temp, int l, int r) { p>:.js5.a  
int i, j, k; Gm=&[?}  
int mid = (l + r) / 2; 5 wN)N~JE  
if (l == r) =MD)F  
return; 6Yt3Oq<U  
if ((mid - l) >= THRESHOLD) 9F6dKPN:  
mergeSort(data, temp, l, mid); <w8H[y"c  
else ;:ZD<'+N  
insertSort(data, l, mid - l + 1); _5O~ ]}  
if ((r - mid) > THRESHOLD) (nuTfmt>  
mergeSort(data, temp, mid + 1, r); E?|NYu#I6  
else R~hIoaiN  
insertSort(data, mid + 1, r - mid); 4gdXO  
)FIFf;r  
for (i = l; i <= mid; i++) { QR8]d1+GV  
temp = data; 2Dvq3VbiO"  
} Us2> 5 :\  
for (j = 1; j <= r - mid; j++) { T2)CiR-b  
temp[r - j + 1] = data[j + mid]; f;l}Z|dok6  
} -49I3&  
int a = temp[l]; k]RQ 7e  
int b = temp[r]; vk(I7  
for (i = l, j = r, k = l; k <= r; k++) { _ D8 zKp  
if (a < b) { "[7'i<,AI  
data[k] = temp[i++]; 0JR)-*  
a = temp; @KLX,1K  
} else { Az#kE.8b*A  
data[k] = temp[j--]; BePb8 k<y  
b = temp[j]; 48G^$T{  
} r;H#cMj  
} [O!/hppN  
} %]tW2s"  
2\+N<-(F5  
/** DZb0'+jQ  
* @param data ~ Hj c?*  
* @param l 9:Bn-3)  
* @param i xt`a":lru  
*/ Y(EF )::  
private void insertSort(int[] data, int start, int len) { VAyAXN~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n: {f\  
} /6n"$qon6  
} |Dq?<Ha  
} ^%g 8OP  
} J\'f5)k  
?@Tsd@s~r  
堆排序: np}0O  X  
1L\r:mx3  
package org.rut.util.algorithm.support; %.\+j,G7  
{cdrMP@""  
import org.rut.util.algorithm.SortUtil; 16.?4 5  
fJ\ u8  
/** 7/BjWU5*  
* @author treeroot JEZ0O&_R  
* @since 2006-2-2 uz=9L<$  
* @version 1.0 w&]$!g4  
*/ LHA :frC  
public class HeapSort implements SortUtil.Sort{ .uN(44^+x  
b0se-#+  
/* (non-Javadoc) wp4  .~E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c@4$)68  
*/ c5i7mx:.  
public void sort(int[] data) { j^f54Ky.  
MaxHeap h=new MaxHeap(); Uz]=`F8  
h.init(data); />>KCmc  
for(int i=0;i h.remove(); nI+.De~  
System.arraycopy(h.queue,1,data,0,data.length); _l,-S Qgj  
} N1vA>(2A  
V;~\+@  
private static class MaxHeap{ TvRm 7  
W3%RB[s-  
void init(int[] data){ 8e`HXU(A  
this.queue=new int[data.length+1]; #}tdA( -  
for(int i=0;i queue[++size]=data; Hbu :HFJ!  
fixUp(size); UCTc$3  
} I: MrX  
} PVmePgF   
E2S#REB4  
private int size=0;  8#1o  
c<q~T >0k  
private int[] queue; e?]HNy  
AOTtAV_e  
public int get() { tejpY  
return queue[1]; ~)ysEZl  
} :)+)L@By  
RyWfoLc  
public void remove() { @;S)j!m`  
SortUtil.swap(queue,1,size--); l)EtK&er(}  
fixDown(1); <v\x<ul6  
} Ngm/5Lc  
file://fixdown FL0yRF5  
private void fixDown(int k) { 2mO9  
int j; /7-FVqDx8  
while ((j = k << 1) <= size) { 8CvNcO;H0  
if (j < size %26amp;%26amp; queue[j] j++; nwDGzC~y<  
if (queue[k]>queue[j]) file://不用交换 ]RF(0;  
break; JX{rum  
SortUtil.swap(queue,j,k); `+UBl\j  
k = j; 7Q&S [])  
} i+I1h=  
} /6 y;fx  
private void fixUp(int k) { P(L iH  
while (k > 1) { ykGA.wo7/P  
int j = k >> 1; ZiaFByLy  
if (queue[j]>queue[k]) KHeeB`V>J  
break; 91k-os(4]  
SortUtil.swap(queue,j,k); T[J8zL O  
k = j; ,V;HM F.  
} I.%EYAai  
} A[:(#iR5-E  
H*",'`|-  
} xp]9Z]J1l  
i3$pqNe  
} N#X* 0i"  
}rWg ']  
SortUtil: SJsbuLxR  
?rdWhF]  
package org.rut.util.algorithm; %e+*&Z',  
5`::#[  
import org.rut.util.algorithm.support.BubbleSort; d"lk"R  
import org.rut.util.algorithm.support.HeapSort; (:}}p}u  
import org.rut.util.algorithm.support.ImprovedMergeSort; acj-*I  
import org.rut.util.algorithm.support.ImprovedQuickSort; f{{J_""?&  
import org.rut.util.algorithm.support.InsertSort; ]Z [0xs  
import org.rut.util.algorithm.support.MergeSort; TA~ZN^xI  
import org.rut.util.algorithm.support.QuickSort; J!@R0U.  
import org.rut.util.algorithm.support.SelectionSort; V&lx0Dy  
import org.rut.util.algorithm.support.ShellSort; NA#,q 8  
_k(&<1i  
/** qGP}  
* @author treeroot =pnQ?2Og  
* @since 2006-2-2 LQ||7>{eX  
* @version 1.0 '7.4!I0'  
*/ o ethO  
public class SortUtil { Yt=2HJY  
public final static int INSERT = 1; 8<=sUO  
public final static int BUBBLE = 2; Qm*XWo  
public final static int SELECTION = 3; bfK4ps}m*  
public final static int SHELL = 4; NT9|``^Z  
public final static int QUICK = 5; ^szi[Cj  
public final static int IMPROVED_QUICK = 6; Nc?'},  
public final static int MERGE = 7; zqp>Xw  
public final static int IMPROVED_MERGE = 8; iMQ0Sq-%1  
public final static int HEAP = 9;  nL[G@1nR  
XaMsIyhI  
public static void sort(int[] data) { x]t$Zb/Uxa  
sort(data, IMPROVED_QUICK); v <OZ # L$  
} $\PU Y8  
private static String[] name={ F#.ph?W  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" SEH[6W3  
}; Sar1NkD#  
^Ww5@  
private static Sort[] impl=new Sort[]{ fm q(!  
new InsertSort(), B|'}HBkP  
new BubbleSort(), i4&V+h"  
new SelectionSort(), QH?sx k2  
new ShellSort(), [ B*r{  
new QuickSort(), E5Sn mxd  
new ImprovedQuickSort(), Z_[L5B]Gwd  
new MergeSort(), {xh5s<uOj  
new ImprovedMergeSort(), $KlaZ>D h  
new HeapSort() @|e we. r  
}; <-,y0Y'  
dqO]2d  
public static String toString(int algorithm){ %Hhk 6tR,  
return name[algorithm-1]; E0+~c1P-  
}  2IGU{&s  
m7i(0jd +  
public static void sort(int[] data, int algorithm) { po.QM/b \  
impl[algorithm-1].sort(data); U]g9t<jD  
} |I{3~+E h  
<`wOy [e  
public static interface Sort { [8%q@6[  
public void sort(int[] data); m!=5Q S3Z  
} m;L 3c(r.  
>qmNT/  
public static void swap(int[] data, int i, int j) { 6~x a^3G:  
int temp = data; M}q;\}  
data = data[j]; 1aUg({  
data[j] = temp; zS h9`F  
} cvhwd\  
} v5U'ky :  
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