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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。 zNZ"PYh<u  
插入排序: kw%vO6"q(  
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package org.rut.util.algorithm.support; }mZ sK>  
F5hOKUjv  
import org.rut.util.algorithm.SortUtil; NrHh(:  
/** H pZD^h?L  
* @author treeroot gc ce]QS  
* @since 2006-2-2 _iJ8*v 8A  
* @version 1.0 lg9`Z>?  
*/ 9S .J%*F7  
public class InsertSort implements SortUtil.Sort{ 5IwQ <V  
WOv m%sX  
/* (non-Javadoc) {^Y0kvnd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8P kw'.r  
*/ $KmhG1*s  
public void sort(int[] data) { #RJFJb/  
int temp; 4axc05  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7U@;X~c  
} U_X/  
} w7(jSPB  
} Vy- kogVt  
c]u^0X?&  
} LD.^.4{c:  
[m}58?0~x  
冒泡排序: da'7* &/  
QR.]?t;1  
package org.rut.util.algorithm.support; {JJq/[j  
-Um|:[*I  
import org.rut.util.algorithm.SortUtil; ^lt;K{  
A6D@#(D  
/** f vAF0 a  
* @author treeroot -0 e&>H%  
* @since 2006-2-2 gbC!>LV  
* @version 1.0 yY 3Mv/R  
*/ 6r|BiHP  
public class BubbleSort implements SortUtil.Sort{ =GP~h*5es  
NoR=:Q 9e  
/* (non-Javadoc) ~h:/9q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2I8 RO\zR  
*/ I3#h  
public void sort(int[] data) { J Uf{;nt  
int temp; q=_&izmE'7  
for(int i=0;i for(int j=data.length-1;j>i;j--){ `T-lBwH  
if(data[j] SortUtil.swap(data,j,j-1); ,h#U<CnP#  
} 7%%FYHMO:  
} "K!9^!4&  
} ZRK1 UpP  
} Fz3QSr7FU  
JfrPK/Vn  
} uoryxKRjc~  
K|OowM4tv  
选择排序: _olhCLIR-  
3BTXX0yx  
package org.rut.util.algorithm.support; |X'Pa9u  
 Uu<Tn#nb  
import org.rut.util.algorithm.SortUtil; "EE=j$8u+  
wG, "ZN  
/** S~Z`?qHWh  
* @author treeroot pE^jUxk6  
* @since 2006-2-2 ZeL v!  
* @version 1.0 h=1cD\^|qw  
*/ NIzxSGk|  
public class SelectionSort implements SortUtil.Sort { 3RW3<n  
HxH.=M8S_  
/* m9&MTR D\  
* (non-Javadoc) #VLO6  
* RfZZqe U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G;'=#c ^  
*/ B!z-O*fLE1  
public void sort(int[] data) { )=PmHUd  
int temp; !6d6b@Mv  
for (int i = 0; i < data.length; i++) { {eQ')f  
int lowIndex = i; pYtvenBy  
for (int j = data.length - 1; j > i; j--) { AzfYw'^&9  
if (data[j] < data[lowIndex]) { /IkSgKJiz\  
lowIndex = j; %.zcE@7*  
} WX2w7O'R  
} W,g0n=2V  
SortUtil.swap(data,i,lowIndex); /F3bZ3F  
} \0^ZNa?  
} =s\RK   
:J'ibb1  
} ,)CRozC\}K  
5W(S~}  
Shell排序: ToNRY<!  
h|DKD.  
package org.rut.util.algorithm.support; RyJN=;5p  
[xrM){ItW  
import org.rut.util.algorithm.SortUtil; 1\~-No  
E2 5:e EXa  
/** RjOQSy3  
* @author treeroot On^jHqLaE  
* @since 2006-2-2 )]^xy&:|  
* @version 1.0 _BA2^C':c{  
*/ pFUW7jE  
public class ShellSort implements SortUtil.Sort{ mHnHB.OL  
dWCUZ,6}  
/* (non-Javadoc) )(Z)yz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7Lv5@  
*/ #hNp1y2  
public void sort(int[] data) { tSZd0G<A<o  
for(int i=data.length/2;i>2;i/=2){ 5GwXZ;(G  
for(int j=0;j insertSort(data,j,i); N?7vcN+-t)  
} X53TFRxnT  
} $_5@ NOZ,M  
insertSort(data,0,1); HLP nbI-+  
} JLZ[sWP='  
~I+}u]J  
/** q,W6wM;,E  
* @param data *>ilT5q  
* @param j w^.^XK4v.  
* @param i dV5aIj  
*/ S!u`V3-s  
private void insertSort(int[] data, int start, int inc) { Ky qFeR  
int temp; +&T;jad2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); EK-Qa<[|  
} W/U_:^[-  
} +Y:L4`  
} d+6 by,'  
$c WO`\XM  
} ~(|~Ze>  
\w]c<gM K  
快速排序: _QhB0/C  
.hD 2g"  
package org.rut.util.algorithm.support; icX$<lD  
LPOZA`  
import org.rut.util.algorithm.SortUtil; |H,g}XWMU  
nt"8kv  
/** {O"?_6',  
* @author treeroot `wyX)6A|bt  
* @since 2006-2-2 /f:)I.FUm  
* @version 1.0 [~ Wiy3n  
*/ `F#<qZSR  
public class QuickSort implements SortUtil.Sort{ xSQ0]vE  
C&\vVNV;9  
/* (non-Javadoc) D-/aS5wM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OfR\8hAY  
*/ e' `xU  
public void sort(int[] data) { d^&F%)AT  
quickSort(data,0,data.length-1); $S"QyAH~-a  
} Vs)%*1><  
private void quickSort(int[] data,int i,int j){ f> u{e~Q,  
int pivotIndex=(i+j)/2; owA0I'|V-A  
file://swap /$IF!q+C  
SortUtil.swap(data,pivotIndex,j); is3nLm(  
.Y.{j4[LQ  
int k=partition(data,i-1,j,data[j]); eBK s-2r  
SortUtil.swap(data,k,j); 4E Hb  
if((k-i)>1) quickSort(data,i,k-1); gAx8r-` `  
if((j-k)>1) quickSort(data,k+1,j); U2tsHm.O  
`q ;79t  
} I) $of9   
/** )P{I<TBI;  
* @param data .>(?c92  
* @param i 4LCgQS6  
* @param j A/ eZ!"Y  
* @return /f_c?|  
*/ J.`z;0]op  
private int partition(int[] data, int l, int r,int pivot) { -zeodv7  
do{ j15TavjGh  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X9:(}=E V  
SortUtil.swap(data,l,r); &wZ ggp  
} xLE+"6;W  
while(l SortUtil.swap(data,l,r); U`j[Ni}"  
return l; cU y,q]PO  
} 8e'0AI_>  
ZOFhX$I  
} !lSxBr[dQ  
c=YJ:&/5&  
改进后的快速排序: b&$ ?.z  
^J8sR4p#  
package org.rut.util.algorithm.support; ^6?NYHMr=  
~YIGOL"?  
import org.rut.util.algorithm.SortUtil; >`jsUeS  
Oc;/'d2  
/** a0"gt"q A  
* @author treeroot C?n3J  
* @since 2006-2-2 XA[G F6W,Y  
* @version 1.0 /!o(Y8e>x  
*/ imx/hz!  
public class ImprovedQuickSort implements SortUtil.Sort { u_aln[oIv  
dVDQ^O&  
private static int MAX_STACK_SIZE=4096; 8ycmvpJ  
private static int THRESHOLD=10; )shzJ9G  
/* (non-Javadoc) Fr%LV#Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &`a$n2ycy  
*/ W|U!kqU  
public void sort(int[] data) { LzEAA{  
int[] stack=new int[MAX_STACK_SIZE]; lu^ c^p;  
ILUA'T=B0  
int top=-1; dqMR<Nl&  
int pivot; q8:Z.<%8  
int pivotIndex,l,r; (K$K;f$"r  
GHHErXT\a  
stack[++top]=0; qYg4H|6  
stack[++top]=data.length-1; WgdL^PN(h  
9Z0(e!b4S  
while(top>0){ WUid5e2  
int j=stack[top--]; S9Fg0E+J  
int i=stack[top--]; v+Vpak9|  
ZQvpkO7}M  
pivotIndex=(i+j)/2; mMqT-jT  
pivot=data[pivotIndex]; -aiQp@^/J  
z8 bDBoD6  
SortUtil.swap(data,pivotIndex,j); q+{-p?;;  
I/bED~Z:a  
file://partition ,jBd3GdlZ  
l=i-1; H_'i.t 'SS  
r=j; Sf}>~z2  
do{ |Xblz1>DF  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); IMY?L  
SortUtil.swap(data,l,r); ]1 #&J(  
} gmfux b/  
while(l SortUtil.swap(data,l,r); NF1e>O:a<  
SortUtil.swap(data,l,j); y2V9!  
[y y D-  
if((l-i)>THRESHOLD){ Vw*;xek?  
stack[++top]=i; XD`QU m  
stack[++top]=l-1;  M/5e4b  
} 4#uWj ?u  
if((j-l)>THRESHOLD){ PsDks3cG  
stack[++top]=l+1; \#5t%t  
stack[++top]=j; j380=? 7  
} Y[gj2vNe4g  
p6[a"~y  
} bz_Zk  
file://new InsertSort().sort(data); R@``MC0  
insertSort(data); ?;.j)  
} rt%.IQdY  
/** *b?C%a9  
* @param data ?H7*?HV  
*/ KQ3]'2q  
private void insertSort(int[] data) { FxSBxz<N-A  
int temp; (Q !4\Gy  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]GYO`,  
} cA"',N8!5  
} TX]4Y953D  
} aG?ko*A;  
SoODss~X  
} [~ bfM6Jw  
)t{oyBT  
归并排序: (LPMEQhI:  
P}o:WI4.cB  
package org.rut.util.algorithm.support; \)VV6'zih  
#Nxk3He]8  
import org.rut.util.algorithm.SortUtil; 2O {@W +Mt  
N<+ ><>9  
/** %4U;Rdq&Ud  
* @author treeroot S\GC^ FK  
* @since 2006-2-2 hS&,Gm`^  
* @version 1.0 L)VEA8}  
*/ a +Q9kh  
public class MergeSort implements SortUtil.Sort{ Q44Pg$jp  
ks7g*; 3{@  
/* (non-Javadoc) PYqx&om  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )J8dm'wH92  
*/ < vU<:S  
public void sort(int[] data) { ;HM& ":7  
int[] temp=new int[data.length]; IC+Z C   
mergeSort(data,temp,0,data.length-1); KzZ! CB\  
} KotJ,s]B  
C>Qgd9  
private void mergeSort(int[] data,int[] temp,int l,int r){ EA%(+tJ^0  
int mid=(l+r)/2; s bd;Kn  
if(l==r) return ; gF1q Z=<  
mergeSort(data,temp,l,mid); vpx8GiV  
mergeSort(data,temp,mid+1,r); AwB ]0H  
for(int i=l;i<=r;i++){ {zBf*x  
temp=data; r00waw>C\  
} p~I+ZYWF'  
int i1=l; Z{`;Ys:zk  
int i2=mid+1; Mw@T!)(  
for(int cur=l;cur<=r;cur++){ R-J\c+C>W  
if(i1==mid+1) pt;E~_  
data[cur]=temp[i2++]; VO>A+vx3M  
else if(i2>r) UiA\J  
data[cur]=temp[i1++];  ~%_$e/T  
else if(temp[i1] data[cur]=temp[i1++]; h@FDP#H  
else 6 k+FTDL  
data[cur]=temp[i2++]; CJk$o K{Q  
} H r?G_L  
} .&.j?kb  
E\#hcvP  
} $x 6Rmd{  
[o<R#f`  
改进后的归并排序: }6.R.*Imz  
:kqJ~  
package org.rut.util.algorithm.support; B;[{7J]  
?ltTJ(Po  
import org.rut.util.algorithm.SortUtil; 0 V*Di2  
~WU _u,:  
/** oabc=N!7r  
* @author treeroot {bL6%._C  
* @since 2006-2-2 ,Cj1S7GFR  
* @version 1.0 q5?g/-_0[  
*/ tYiK#N7  
public class ImprovedMergeSort implements SortUtil.Sort { MVz=:2)J2  
MhNzmI&`  
private static final int THRESHOLD = 10; ws Lg6  
U .hV1  
/* mJRvC%  
* (non-Javadoc) <Bb $d@c  
* y.2_5&e/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +:?-Xd:p  
*/ 8I$B^,N  
public void sort(int[] data) { @Z~lM5n$8  
int[] temp=new int[data.length]; BKfcK>%g  
mergeSort(data,temp,0,data.length-1); |E0>-\6  
} !Sfy'v.  
MPA<?  
private void mergeSort(int[] data, int[] temp, int l, int r) { {&8-OoH ~  
int i, j, k; _Xd,aLoo  
int mid = (l + r) / 2; ]p:x,%nm  
if (l == r) 6+BR5Nr  
return; /J`8Gk59  
if ((mid - l) >= THRESHOLD) 5#s?rA%u  
mergeSort(data, temp, l, mid); YvE$fX=  
else +I#4+0f  
insertSort(data, l, mid - l + 1); : m$cnq~h  
if ((r - mid) > THRESHOLD) k'}}eu/ q  
mergeSort(data, temp, mid + 1, r); sXOGIv  
else jFpXTy[>  
insertSort(data, mid + 1, r - mid); 6UR.,*f=  
{o< 4 ^  
for (i = l; i <= mid; i++) { aM5zYj`pW  
temp = data; +[8s9{1{C  
} mb~w .~%  
for (j = 1; j <= r - mid; j++) { vC[)/w  
temp[r - j + 1] = data[j + mid]; #sdW3m_%  
} FiJJe  
int a = temp[l]; _,_>B8  
int b = temp[r]; o0&jel1a  
for (i = l, j = r, k = l; k <= r; k++) { "2(lgxhj  
if (a < b) { ym:^Y-^iV  
data[k] = temp[i++]; ?dlQE,hB$  
a = temp; y562g`"U  
} else { Bx0^?>  
data[k] = temp[j--]; qyGVyi3  
b = temp[j]; Kf2*|ZHj  
} dQ@ e+u5  
} ~ z*  
} >3s9vdUp4h  
*5]fjh{  
/** 1u7 5  
* @param data ZN-J!e"`  
* @param l +"6_rbeuO  
* @param i V;mKJ.d${  
*/ ;({&C34a  
private void insertSort(int[] data, int start, int len) { *,{. oO9#  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K2>(C$Z  
} 1BwCJ7?8  
} _C~e(/=z  
} ,Y=r] fk  
} KG6ki_  
&10vdAnBRC  
堆排序: Ke,UwYG2~G  
55MsF}p  
package org.rut.util.algorithm.support; 8:0QIkqk  
3]WIN_h  
import org.rut.util.algorithm.SortUtil; =_I2ek  
%/b?T]{  
/** frbKi _1  
* @author treeroot hNmC(saMGm  
* @since 2006-2-2 A U9Y0<  
* @version 1.0 GLQ1rT  
*/ JDfkm+}uY  
public class HeapSort implements SortUtil.Sort{ ?Z {4iF  
o $oW-U  
/* (non-Javadoc)  wX@&Qv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |`_qmk[:R  
*/ ?Q[uIQ?dV  
public void sort(int[] data) { //]g78]=O  
MaxHeap h=new MaxHeap(); lHv;C*(_=  
h.init(data); 8hba3L_Z  
for(int i=0;i h.remove(); 4]A2Jl E  
System.arraycopy(h.queue,1,data,0,data.length); |8PUmax  
} /c'3I  
wO&`3Q3~$  
private static class MaxHeap{ _Sy-&}c+ +  
@B %m,Mx  
void init(int[] data){ m]} E0  
this.queue=new int[data.length+1]; Or= [2@Wg  
for(int i=0;i queue[++size]=data; =($RT  
fixUp(size); @'j=oTT  
} x$d3 fsEE  
} )n}Wb+2I  
I>o+INb:  
private int size=0; d a we!w!  
I-oI,c%+  
private int[] queue; >(S4h}^I  
uQazUFw  
public int get() { (f^WC,  
return queue[1]; 2s>dlz  
} f9u^/QVS&  
/:d03N\9k  
public void remove() { _}R?&yO  
SortUtil.swap(queue,1,size--); U*`7   
fixDown(1); B =@BYqiY  
} LvgNdVJDP|  
file://fixdown jnsV'@v8Nj  
private void fixDown(int k) { #Mw|h^ Wm  
int j; \c3zK|^  
while ((j = k << 1) <= size) { ^ }Rqe  
if (j < size %26amp;%26amp; queue[j] j++; |E-/b6G  
if (queue[k]>queue[j]) file://不用交换 } NW^?37  
break; Hq[d!qc  
SortUtil.swap(queue,j,k); )kR~|Yn<-  
k = j; /KjRB_5~q}  
} #-dfG.*  
} JUXIE y^  
private void fixUp(int k) { Q*}#?g  
while (k > 1) { P1)f-:;  
int j = k >> 1; EKoAIC*?p  
if (queue[j]>queue[k]) ac"Pn? q  
break; {.pR$]6B"+  
SortUtil.swap(queue,j,k); pV{MW#e  
k = j; 4wh_ iO  
} Jaz|b`KDj  
} Wm$( b2t  
:L#t?~  
} j@1cllJkh  
?rID fEvV  
} *c4uCI:0t  
gQ4Q h;  
SortUtil: sc'QNhrW  
*t J+!1  
package org.rut.util.algorithm; Wc [@,  
4of3#M  
import org.rut.util.algorithm.support.BubbleSort; Ac;rMwXk#  
import org.rut.util.algorithm.support.HeapSort; ;> **+ezF  
import org.rut.util.algorithm.support.ImprovedMergeSort;  /B)ZB})z  
import org.rut.util.algorithm.support.ImprovedQuickSort; H6(kxpOI\  
import org.rut.util.algorithm.support.InsertSort; oV utHt  
import org.rut.util.algorithm.support.MergeSort; 'b#RfF,7H}  
import org.rut.util.algorithm.support.QuickSort; yE[ -@3v  
import org.rut.util.algorithm.support.SelectionSort; ga&l.:lo  
import org.rut.util.algorithm.support.ShellSort; wU,{ 5w  
7_C;-  
/** qYv/" 1  
* @author treeroot *5Upb,* *  
* @since 2006-2-2 T.O^40y  
* @version 1.0 ',j'Hf  
*/ wr{03mQHxp  
public class SortUtil { f>\OT   
public final static int INSERT = 1; w='1uV<6  
public final static int BUBBLE = 2; ktLXL;~X  
public final static int SELECTION = 3; \~!9T5/*  
public final static int SHELL = 4; Z*S 9pkWcF  
public final static int QUICK = 5; e@'rY#:u  
public final static int IMPROVED_QUICK = 6; }YJ(|z""  
public final static int MERGE = 7; ?Q1(L$-=  
public final static int IMPROVED_MERGE = 8; g.OBh_j-v  
public final static int HEAP = 9; &EKP93  
WF\ hXO  
public static void sort(int[] data) { +shT}$cb1  
sort(data, IMPROVED_QUICK); ;@p2s'(  
} `3+yu' Q'  
private static String[] name={ G0Zq:kJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" #k2&2W=x  
}; j~,7JJ (y  
CqX2R:#  
private static Sort[] impl=new Sort[]{ 7uG@ hL36  
new InsertSort(), _"n1"%Ns  
new BubbleSort(), fTiqY72h  
new SelectionSort(), 2GOQ|Z  
new ShellSort(), &09z`* ,  
new QuickSort(), u4TU"r("A  
new ImprovedQuickSort(), >!O3 jb k  
new MergeSort(), Nf8."EDUW  
new ImprovedMergeSort(), -5,QrMM<  
new HeapSort() @w&VI6  
}; wHm{4  
LX),oR  
public static String toString(int algorithm){ XH4!|wz  
return name[algorithm-1]; `&$"oW{HW  
} )1ia;6}  
JwWW w1  
public static void sort(int[] data, int algorithm) { *0]E4]ZO  
impl[algorithm-1].sort(data); x&9}] E^<  
} Qr]xj7\@i  
Q4e*Z9YJ  
public static interface Sort { Ug>yTc_(7  
public void sort(int[] data); Z7RGOZQ}G  
} `:cnu;  
DpjiE/*  
public static void swap(int[] data, int i, int j) { }[ LME Z  
int temp = data; z-fP #.  
data = data[j]; gQaBQq9  
data[j] = temp; RM\it"g  
} h(]aP<49L  
} 'qcLK>E  
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