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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。 LttA8hf5q?  
插入排序: +A1*e+/b\  
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package org.rut.util.algorithm.support; p ^TCr<=  
^~TE$i<   
import org.rut.util.algorithm.SortUtil; ar 7.O;e  
/** _qk&W_u  
* @author treeroot \(=xc2  
* @since 2006-2-2 of7p~{3H  
* @version 1.0 *kZH~]  
*/ {|OXiRm'  
public class InsertSort implements SortUtil.Sort{ S76MY&Vx23  
-qvMMit%7  
/* (non-Javadoc) dT&u}o3X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  q^6#.}  
*/ N}[!QE  
public void sort(int[] data) { T*Ge67  
int temp; ToKG;Ff4b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w'_|X&@H  
} fWWB]h  
} GV ) "[O  
} }#M>CNi'PU  
#H |p)2k  
} ?-o_]!*v0/  
 )h>dD  
冒泡排序: ]oz>/\!  
0|K<$e6IH  
package org.rut.util.algorithm.support; fuCt9Kjo<  
E@)'Z6r1  
import org.rut.util.algorithm.SortUtil; vaHtWz!P  
;gu4~LQw  
/** |9.J?YP8 (  
* @author treeroot _I3"35a  
* @since 2006-2-2 /pU`-  
* @version 1.0 B<Cg_C  
*/ 2'OY,Ooe  
public class BubbleSort implements SortUtil.Sort{ @qW$un:  
7I]?:%8 h  
/* (non-Javadoc) nFI<Te^)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t5i58@{~  
*/ %[~g84@  
public void sort(int[] data) { -vc$I=b;  
int temp; = \oW {?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9C Ki$L  
if(data[j] SortUtil.swap(data,j,j-1); ,JbP~2M~%  
} m :~y:.  
} .X)Wb{7  
} 5A 5t  
} -#G>`T~  
_\,lv \u  
} [h&s<<# D  
c=?6`m,"M  
选择排序: i| ,}y`C#  
vF~q".imC  
package org.rut.util.algorithm.support; Tj!\SbnA[  
3fX _XH1Q  
import org.rut.util.algorithm.SortUtil; N7}3?wS  
7B5b +  
/** lx2%=5+i;  
* @author treeroot -bSM]86  
* @since 2006-2-2 Pf?&ys6  
* @version 1.0 CK|AXz+EN  
*/ VG$;ri>  
public class SelectionSort implements SortUtil.Sort { car|&b  
p/7'r  
/* O}2/w2n  
* (non-Javadoc) uTJ z"c`F  
* eLgq )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XDyo=A]  
*/ gcO$T`  
public void sort(int[] data) { & @_PY  
int temp; nUX3a'R  
for (int i = 0; i < data.length; i++) { |yp^T  
int lowIndex = i; )Spa F)N8  
for (int j = data.length - 1; j > i; j--) { D^p)`*  
if (data[j] < data[lowIndex]) { "cjD-4 2  
lowIndex = j; " ;T a8  
} HFF rS%  
} QuI!`/N)z  
SortUtil.swap(data,i,lowIndex); |f1^&97=+  
} ZWjje6  
} SdMLO6-  
>\J<`  
} 1P 'L<z  
S5Pn6'w  
Shell排序: y@2"[fo3~  
%1{O  
package org.rut.util.algorithm.support; ''!j:49  
q@VIFmqY!  
import org.rut.util.algorithm.SortUtil; nox-)e  
;p <BiC$b  
/** iyUnxqP  
* @author treeroot ,+C?UW  
* @since 2006-2-2 w}(pc }^U  
* @version 1.0 =,qY\@fq  
*/ iYw1{U  
public class ShellSort implements SortUtil.Sort{ O*]}0*CT  
0(Z:QqpU$  
/* (non-Javadoc) e.XD5~Ax  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kJNg>SN*@#  
*/ usoyH0t!?  
public void sort(int[] data) { qx*b\6Rt  
for(int i=data.length/2;i>2;i/=2){ [0kZyjCq@  
for(int j=0;j insertSort(data,j,i); QG L~??  
} 4OO^%`=)M'  
} {9j0k`A  
insertSort(data,0,1); x5;D'Y t"|  
} Q?([#  
R*k;4*1u  
/** a0B%x!y^  
* @param data "fSaM&@[B  
* @param j U;u4ey  
* @param i Al *yx_j  
*/ 6L Fhhl^  
private void insertSort(int[] data, int start, int inc) { Uqj$itqUQ  
int temp;  => Qd  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i=rA;2>  
} ;yjw(OAI*  
} I*a .!/$)  
} -y3[\zNe  
2lN0Sf@  
} *&h]PhY  
ft0d5n!ui4  
快速排序: !mwMSkkq  
b`DPlQHj  
package org.rut.util.algorithm.support; )u]=^  
]+w 27!  
import org.rut.util.algorithm.SortUtil; _ogN   
%X%f0J  
/** )7P>Hj  
* @author treeroot *g:Dg I 2  
* @since 2006-2-2 Gb"kl.j  
* @version 1.0 Y=<zR9f`  
*/ #KHj.Vg  
public class QuickSort implements SortUtil.Sort{ B !rb*"[  
VtU2&  
/* (non-Javadoc) M-+!z5 q~d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P-yVc2YH  
*/ C+t|fSJ  
public void sort(int[] data) { Z3u6m0!  
quickSort(data,0,data.length-1); '%TD#!a  
} dPV<:uO  
private void quickSort(int[] data,int i,int j){ 5*90t{#  
int pivotIndex=(i+j)/2; mT|r:Yr:  
file://swap qkC{IBN92  
SortUtil.swap(data,pivotIndex,j); +~ Y.m8  
5s4x%L (~}  
int k=partition(data,i-1,j,data[j]); .;,,{ ;  
SortUtil.swap(data,k,j); j9/iBK\Y  
if((k-i)>1) quickSort(data,i,k-1); g@?R"  
if((j-k)>1) quickSort(data,k+1,j); ]S@DVXH  
t)O]0) s  
} 'b>3:&  
/** h{jm  
* @param data I-kK^_0mV<  
* @param i fti0Tz'  
* @param j _ KyhX|  
* @return Ar_Yl|a  
*/ W%9~'pXgB  
private int partition(int[] data, int l, int r,int pivot) { h*Mi/\  
do{ fNyXDCl  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); K>\v<!%a  
SortUtil.swap(data,l,r); 889^P`Q5  
} 8LuU2Lo  
while(l SortUtil.swap(data,l,r); 2<AQ{ c  
return l; ew c:-2Y^  
} oJE<}~_k  
&a\G,Ma  
} :Z83*SPc  
u2I@ fH/  
改进后的快速排序: a |]}uFr  
o##!S6:A  
package org.rut.util.algorithm.support; E=,fdyj.  
P/k#([:2  
import org.rut.util.algorithm.SortUtil; G \$x.  
3YUF\L]yyw  
/** mWLiXKnb  
* @author treeroot M3JV^{O/DV  
* @since 2006-2-2 `bLJ wJ7  
* @version 1.0 9 "M-nH*<  
*/ G%}k_vi&q  
public class ImprovedQuickSort implements SortUtil.Sort { .+lx}#-#  
tTt}=hQpgX  
private static int MAX_STACK_SIZE=4096; c2Y\bKeN  
private static int THRESHOLD=10; e%7#e%1s  
/* (non-Javadoc) HA&hu /mw_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s4=EyBI  
*/ =#{q#COK$  
public void sort(int[] data) { :#N]s  
int[] stack=new int[MAX_STACK_SIZE]; T/hz23nH  
#.,LWL]  
int top=-1; qR%as0;  
int pivot; YWk+}y}^d  
int pivotIndex,l,r; Tg=P*HY6  
 Tx'anP  
stack[++top]=0; 4:s,e<Tc4v  
stack[++top]=data.length-1; &C?4'e  
br?pfs$U  
while(top>0){ f&Juq8s_0  
int j=stack[top--]; 8@FgvWC  
int i=stack[top--]; M%$- c3x  
`C^0YGO%  
pivotIndex=(i+j)/2; PT4iy<  
pivot=data[pivotIndex]; h`p=~u +  
QUz4 Kt  
SortUtil.swap(data,pivotIndex,j); <e@4;Z(h04  
lpbcpB  
file://partition 4#B 56f8  
l=i-1; .GCJA`0h  
r=j; g/w <T+v  
do{ iBKH\em/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); od&wfwk(  
SortUtil.swap(data,l,r); dI%Nwl%  
} S.U#lAn(  
while(l SortUtil.swap(data,l,r); '_91(~P  
SortUtil.swap(data,l,j); b<E78B+Aax  
u})8)  
if((l-i)>THRESHOLD){ sM9utR  
stack[++top]=i; nHLMF7\  
stack[++top]=l-1; xd4~[n\hm  
} =W gzj|Kr  
if((j-l)>THRESHOLD){ 0R-W 9qP  
stack[++top]=l+1; )]zsAw`/  
stack[++top]=j; M~.1:%khM  
} W*u$e8i7  
m,rkKhXP  
} 'W&ewZH_h  
file://new InsertSort().sort(data); \23m*3"W  
insertSort(data); p@d_Ru  
} >YcaFnY  
/** ^--8 cLB n  
* @param data VLbbn  
*/ (L W2S;-  
private void insertSort(int[] data) { 4S* X=1  
int temp; ~L_1&q^4!i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aR)w~s\6  
} wOEc~WOd  
} 3/,}&SX  
} `2M*?.vk  
}:]CXrdg>  
} EO/41O  
T#&X7!4  
归并排序: ]na$n[T/I  
NBw{  
package org.rut.util.algorithm.support; 4Q,|7@  
n8z++ T&  
import org.rut.util.algorithm.SortUtil; 2r@9|}La  
sy(.p^Z  
/** /1xBZf rN  
* @author treeroot A(n3<(O/{Z  
* @since 2006-2-2 Ns\};j?TU*  
* @version 1.0 (543`dqAmC  
*/ c1 j@*6B  
public class MergeSort implements SortUtil.Sort{ G4\|bwh  
TRE D_6  
/* (non-Javadoc) P!XO8X 1F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ggbz  
*/ R}D[ z7  
public void sort(int[] data) { nPjK=o`KR  
int[] temp=new int[data.length]; @z`eqG,']  
mergeSort(data,temp,0,data.length-1); @=BApuer+  
} cG1iO:  
^W~8)Rbf  
private void mergeSort(int[] data,int[] temp,int l,int r){ #[Rs&$vQm  
int mid=(l+r)/2; &_\;p-1:  
if(l==r) return ; mH)8A+us  
mergeSort(data,temp,l,mid); :OA;vp~$x  
mergeSort(data,temp,mid+1,r); G(bl)p^  
for(int i=l;i<=r;i++){ w,OPM}) il  
temp=data; PlwM3lrj  
} R%`fd *g  
int i1=l; #6C<P!]V  
int i2=mid+1; I [n|#N  
for(int cur=l;cur<=r;cur++){ #w si><7   
if(i1==mid+1) ^Iqu^n?2.  
data[cur]=temp[i2++]; equi26jhr  
else if(i2>r) y=AF EP  
data[cur]=temp[i1++]; Th$xk9TK^@  
else if(temp[i1] data[cur]=temp[i1++]; .S]*A b  
else @h/-P'Lc=7  
data[cur]=temp[i2++]; .dwbJT  
} 6d3YLb4M$i  
} t~":'le`zr  
8= g~+<A  
} p ^9o*k`u  
ZWKvz3Wt  
改进后的归并排序: (&X/n=UI  
KWM}VZY:Z  
package org.rut.util.algorithm.support; 7R,;/3wWjG  
Uz%ynH  
import org.rut.util.algorithm.SortUtil; Zu94dFP  
q(v|@l|)yO  
/** bEmzigN[  
* @author treeroot zT93Sb  
* @since 2006-2-2 d?V/V'T[  
* @version 1.0 f*VXg[&\\F  
*/ C 1)+^{7ef  
public class ImprovedMergeSort implements SortUtil.Sort { 2#s8Dxt  
$U pWlYwG  
private static final int THRESHOLD = 10; aq#F  
0IBQE  
/* UUF]45t>  
* (non-Javadoc)  SWyJ`  
* SH O&:2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~(:0&w%e  
*/ ,R=$ qi|  
public void sort(int[] data) { ~g;)8X;;+  
int[] temp=new int[data.length]; 1-Dw-./N  
mergeSort(data,temp,0,data.length-1); 3\cx(  
} CZ =]0zB  
nQ{~D5y,,  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^AERGB\36  
int i, j, k; zjzEmX  
int mid = (l + r) / 2; -z%->OUu  
if (l == r) KEf1GU6s  
return; ;j+*}|!  
if ((mid - l) >= THRESHOLD) xc7Rrh]}  
mergeSort(data, temp, l, mid); '}-QZ$|*  
else 9WV8ZP  
insertSort(data, l, mid - l + 1); PH'n`D #  
if ((r - mid) > THRESHOLD) XV,ce~ro[  
mergeSort(data, temp, mid + 1, r); IYa(B+nB)  
else e*d lGK3l  
insertSort(data, mid + 1, r - mid); A+FQmLS  
X1BqN+=@9  
for (i = l; i <= mid; i++) { Dn#UcMO>W  
temp = data; We'=/!  
} ?a'EkZ.dB  
for (j = 1; j <= r - mid; j++) { SL +\{V2  
temp[r - j + 1] = data[j + mid]; ]Rxrt~ ZB  
}  `YO&  
int a = temp[l]; 6o*'Q8h  
int b = temp[r]; U /xzl4m6  
for (i = l, j = r, k = l; k <= r; k++) { L@f&71  
if (a < b) { ] v:"    
data[k] = temp[i++]; fA=Lb^,M  
a = temp; ezri9\Ju  
} else { {\|XuCF#  
data[k] = temp[j--]; fuWAw^&  
b = temp[j]; vFeR)Ox's  
} GH&5m44   
} z)Yb9y>2  
} *z0 R f;  
;ULw-&]P  
/** %Z8pPH~T  
* @param data a)7&2J  
* @param l muKu@nshL  
* @param i ++ObsWZ  
*/ @X=sfygk  
private void insertSort(int[] data, int start, int len) { R[TaP 7n  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g4;|uK;  
} `S4G+j>u6  
} 3K/]{ dkD  
} vG=Pi'4XXo  
} =\\rk,F  
.k#O[^~]  
堆排序: Cv p#=x0  
#Yy5@A}`o  
package org.rut.util.algorithm.support; 3_T'0x\FP  
u=E &jL5U  
import org.rut.util.algorithm.SortUtil; 8cRc5X  
qoW$Iw*q)B  
/** A;f)`i0l,  
* @author treeroot -O?A"  
* @since 2006-2-2 <TS ps!(#  
* @version 1.0 !>&G+R+k  
*/ J%fJF//U  
public class HeapSort implements SortUtil.Sort{ a FWTm,)  
g;:3I\ L  
/* (non-Javadoc) $"#M:V @  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +aqQa~}r  
*/ `V.tqZF  
public void sort(int[] data) { D%=&euB  
MaxHeap h=new MaxHeap(); ;6?,Yhk$h  
h.init(data); 0rif,{"  
for(int i=0;i h.remove(); > :0N)Pj  
System.arraycopy(h.queue,1,data,0,data.length); auM1k]  
} 7 Rc/<,X  
?q0a^c?A^  
private static class MaxHeap{ uwt29  
tA9Ew{3s  
void init(int[] data){ FRQkD%k  
this.queue=new int[data.length+1]; .mOm@<Xdg  
for(int i=0;i queue[++size]=data; u!fZ>kS  
fixUp(size); 6.a>7-K}%  
} ^{NN-  
} 0XE(vc!  
/Wdrpv-%,1  
private int size=0; ,eL&Ner  
J|cw9u  
private int[] queue; Cn.dv-  
Upm#:i|"  
public int get() { "g(q)u >  
return queue[1]; PI8ag  
} h-o;vC9fC  
TaKCN   
public void remove() { "`'+@KlE  
SortUtil.swap(queue,1,size--); ur]WNk8bN  
fixDown(1); UY:Be8C A  
} WJ 'lYl0+7  
file://fixdown ]]5(:>l  
private void fixDown(int k) { F'_z$,X6  
int j; ]HRHF'4  
while ((j = k << 1) <= size) { DvA#zX[  
if (j < size %26amp;%26amp; queue[j] j++; P#;pQC  
if (queue[k]>queue[j]) file://不用交换 kjSzu qB  
break; -7EwZRS@9  
SortUtil.swap(queue,j,k); 64:p 4N  
k = j; 3@<m/%  
} TETfRnm  
} qzk]9`i1:  
private void fixUp(int k) { JBISA _Y  
while (k > 1) { hG}/o&}U  
int j = k >> 1; ! e?=g%(  
if (queue[j]>queue[k]) h^J :k  
break; Exat_ L'?  
SortUtil.swap(queue,j,k); 4dh> B>Q  
k = j; b}N \h<\G  
} jank<Q&w  
} j\.e6&5%SS  
^Je*k)COn  
} D9n+eZ  
9YBlMf`KEf  
} 9,}Z1 f\%  
#O'g*]j  
SortUtil: YKx+z[A/p  
Zh?n;n}  
package org.rut.util.algorithm; M@0S*[O{"  
)EN ,Ry  
import org.rut.util.algorithm.support.BubbleSort; 26j-1c!NGd  
import org.rut.util.algorithm.support.HeapSort; `EiL~*  
import org.rut.util.algorithm.support.ImprovedMergeSort; LBcqFvj{&  
import org.rut.util.algorithm.support.ImprovedQuickSort; lI5>d(6p  
import org.rut.util.algorithm.support.InsertSort; rhN"#?  
import org.rut.util.algorithm.support.MergeSort; / ]nrxT  
import org.rut.util.algorithm.support.QuickSort; ?X7nM)  
import org.rut.util.algorithm.support.SelectionSort; Wx8;+!2Q/  
import org.rut.util.algorithm.support.ShellSort; BJsN~` =r  
t4-0mNBZt$  
/** fY|vq amA;  
* @author treeroot ~\c  j  
* @since 2006-2-2 pFwe&_u]  
* @version 1.0 AUl[h&s  
*/ Q2!RFtXV  
public class SortUtil { Q%t _Epe  
public final static int INSERT = 1; wJ7Fnj>u%  
public final static int BUBBLE = 2; ASNo6dP 7  
public final static int SELECTION = 3; >DW%i\k1V~  
public final static int SHELL = 4; *#'&a(h B!  
public final static int QUICK = 5; >SD?MW 1E  
public final static int IMPROVED_QUICK = 6; v\XO?UEJ2  
public final static int MERGE = 7; Xd&oERJj  
public final static int IMPROVED_MERGE = 8; K%/g!t)  
public final static int HEAP = 9; ]oC7{OoX  
'qidorT>N  
public static void sort(int[] data) { f{'N O`G  
sort(data, IMPROVED_QUICK); JJP!9<  
} y<y9'tx  
private static String[] name={ 2}ywNVS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L_>LxF43  
};  <XnxAA  
J!zL)u|  
private static Sort[] impl=new Sort[]{ o1Wf#Zq   
new InsertSort(), G:MQ_tfr&  
new BubbleSort(), |:d_IB@  
new SelectionSort(), ?gXdi<2Qn  
new ShellSort(),  V#+J4   
new QuickSort(), f:9qId ;/M  
new ImprovedQuickSort(), L!2Ef4,wAz  
new MergeSort(), \(1WLP$2U  
new ImprovedMergeSort(), cty  
new HeapSort() ) KYU[  
}; 6x8lnXtA  
qp]s VY  
public static String toString(int algorithm){ 4WQ 96|F  
return name[algorithm-1]; m=]}Tn  
} * @&V=l  
"6iq_!#L  
public static void sort(int[] data, int algorithm) { A@w9_qo  
impl[algorithm-1].sort(data); v<?k$ e5  
} By0Zz  
$tebNi P  
public static interface Sort { v1E(K09h2  
public void sort(int[] data); JRw)~Tg @  
} zZ])G  
46c0;E\9  
public static void swap(int[] data, int i, int j) { ?qtL*;  
int temp = data; BCr*GtR)W  
data = data[j]; 5OC3:%g  
data[j] = temp; <P c;8[  
} mmEe@-lE  
} ~G~:R  
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