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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。 <=,6p>Eo[  
插入排序: 2J;kSh1,L  
2j&AiD  
package org.rut.util.algorithm.support; x_dy~(*  
Nj 00W1  
import org.rut.util.algorithm.SortUtil; (V HL{rj  
/** >orK';r<  
* @author treeroot ]i)j3 WDz]  
* @since 2006-2-2 ?pza G{  
* @version 1.0 5;{H&O9Q  
*/ mtj h`  
public class InsertSort implements SortUtil.Sort{ FeTL&$O  
f1(+ bE%  
/* (non-Javadoc) D~\$~&_]=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c[ ]4n  
*/ A\.GV1  
public void sort(int[] data) { 'Un " rts  
int temp; L{`JRu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); E)fglYWs2  
} {qa Aq%'  
} @#-q^}3  
} C;vtY[}<  
Vkc#7W(  
} bv*,#Qm  
aVd,xl  
冒泡排序: =i7`ek  
ziCHjqT  
package org.rut.util.algorithm.support; W}]%X4<#rN  
NSDv ;|f  
import org.rut.util.algorithm.SortUtil; _zwUE  
?%y?rk <  
/** ) v,:N.@Q  
* @author treeroot Ck|8qUz-  
* @since 2006-2-2 Ht4;5?/y  
* @version 1.0 5kz)5,KjM  
*/ Ez-[ )44/  
public class BubbleSort implements SortUtil.Sort{ 2]ape !(  
G"XVn~]  
/* (non-Javadoc) VH1d$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d8x\  
*/ ]]wA[c~G  
public void sort(int[] data) { }B.H|*uO  
int temp; 7?%k7f  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v*[.a#1^  
if(data[j] SortUtil.swap(data,j,j-1); oGRhnP'PF+  
} M )2`+/4  
} G-.^O,%  
} A, LuD.8  
} a qc?pqM  
v3jg~"!  
} $"H{4 x`-  
bG(3^"dS  
选择排序: AlIpsJ[UU  
<N9[?g)  
package org.rut.util.algorithm.support; 5x>}O3Q_  
aWY gR  
import org.rut.util.algorithm.SortUtil; !! ? Mw  
4sT88lG4n  
/** HZf/CE9T  
* @author treeroot '`uwJ&@  
* @since 2006-2-2 wL:flH@  
* @version 1.0 :65~[$2  
*/ os]8BScx  
public class SelectionSort implements SortUtil.Sort { 5qP:/*+  
qDfd.gL  
/* %GS(:]{n  
* (non-Javadoc) #: [<iSk  
* Ch3jxgQY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 o&`5  
*/ rq/I` :  
public void sort(int[] data) { KW^7H  
int temp; BjzPz  
for (int i = 0; i < data.length; i++) { $ . 9V&  
int lowIndex = i; 5w@4:$=I  
for (int j = data.length - 1; j > i; j--) { c>)Yt^ q&K  
if (data[j] < data[lowIndex]) { d>t<_}  
lowIndex = j; AQ[GO6$,%H  
} C .~+*"Vw  
} ^i} L-QR  
SortUtil.swap(data,i,lowIndex); #I bp(  
} 2P@sn!*{1  
} e8#h3lxJ`  
Yd~X77cv  
} L|}lccpI  
\hEN4V[  
Shell排序: FK5 <6n,U  
J\M>33zu  
package org.rut.util.algorithm.support; f__cn^1  
d! LE{  
import org.rut.util.algorithm.SortUtil; De(Hw& IV  
b7p@Dn?E  
/** 3 C<L  
* @author treeroot cZ2kYn 8  
* @since 2006-2-2 [CXrSST")E  
* @version 1.0 ?3.b{Cq{-  
*/ j?x>_#tIY  
public class ShellSort implements SortUtil.Sort{ +yD`3` E  
<,e+ kL{  
/* (non-Javadoc) v63"^%LX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -RvQB  
*/ cLsV`@J(k  
public void sort(int[] data) { @8pp EFw  
for(int i=data.length/2;i>2;i/=2){ `6]%P(#a  
for(int j=0;j insertSort(data,j,i); 5MtLT#C3r  
} 5jgR4a*_v  
} S9~ +c  
insertSort(data,0,1); &b%zQ4%d-`  
} PC-"gi =h  
+2&@x=xy  
/** a+Kj1ix  
* @param data `yH<E+   
* @param j tAv@R&W,  
* @param i e(GP^oK  
*/ 9E"vN  
private void insertSort(int[] data, int start, int inc) { O%5 r[  
int temp; [VsKa\9u  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); HTS%^<u  
} E4~<V=2l  
} l^pA2yh|  
} li}1S  
z;|A(*Y  
} `</ff+Q6  
<#u=[_H  
快速排序: 9vGu0Um  
to DG7XN}  
package org.rut.util.algorithm.support; D)m5  
M$>1L  
import org.rut.util.algorithm.SortUtil; 3 +G$-ru  
bj>v|#r^  
/** rzm:Yx  
* @author treeroot fj;y}t1E]  
* @since 2006-2-2 n O\"HLM  
* @version 1.0 0dGAP  
*/ e'~J,(fB  
public class QuickSort implements SortUtil.Sort{ 5?3Me59  
b2OQtSr a  
/* (non-Javadoc) IpcNuZo9&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lE&&_INHQ  
*/ AK*LyR?  
public void sort(int[] data) { t>`a sL  
quickSort(data,0,data.length-1); 0+kH:dP{  
} I uMQ9 &  
private void quickSort(int[] data,int i,int j){ Tk:h@F|B.|  
int pivotIndex=(i+j)/2; =,_ +0M9  
file://swap LIvFx|  
SortUtil.swap(data,pivotIndex,j); B1>/5hV}  
8TLgNQP  
int k=partition(data,i-1,j,data[j]); z6jc8Z=O  
SortUtil.swap(data,k,j); (nlvl?\d  
if((k-i)>1) quickSort(data,i,k-1); XF;ES3 d  
if((j-k)>1) quickSort(data,k+1,j); [f1 (`<  
 ]%wVHC  
} N`L0Vd  
/** =WyZX 7@R  
* @param data 1^7hf;|#g  
* @param i :7!0OVQla\  
* @param j KLitg6&P  
* @return M42 Ssn)  
*/ XINu=N(g  
private int partition(int[] data, int l, int r,int pivot) { g1W.mAA3B  
do{ JGsx_V1t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :UF%K>k2  
SortUtil.swap(data,l,r); 2.l Z:VLN  
} ^Eb.:}!D6  
while(l SortUtil.swap(data,l,r); $o0 iLFIX/  
return l; d4>Z8FF|1B  
} Ay5i+)MD  
19Mu61  
} ER5gmmVP@p  
QLEKsX7p>  
改进后的快速排序: ktFhc3);!  
k@f g(}6  
package org.rut.util.algorithm.support; qln3 k`  
p?) ;eJtV/  
import org.rut.util.algorithm.SortUtil; %_RQx2  
 D#il*  
/** C)@y5. G;  
* @author treeroot a!< 8\vzg  
* @since 2006-2-2 si`A:14R  
* @version 1.0 ,9}h  
*/ ES.fOdx  
public class ImprovedQuickSort implements SortUtil.Sort { aI6$?wus  
h]5C|M|  
private static int MAX_STACK_SIZE=4096; GqaDL3Niqs  
private static int THRESHOLD=10; 7=TF.TW)  
/* (non-Javadoc) |)b6>.^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H%UL%l$  
*/ zr+zhpp  
public void sort(int[] data) { TMlP*d#  
int[] stack=new int[MAX_STACK_SIZE]; ^S UPi  
{mZC$U'  
int top=-1; '_w=k 4  
int pivot; gQxbi1!;9  
int pivotIndex,l,r; ur$ _  
<acUKfpY  
stack[++top]=0; xLNtIzx  
stack[++top]=data.length-1; dZ  rAn  
aqRhh=iS  
while(top>0){ +cgSC5nR  
int j=stack[top--]; RrX[|GLSJ  
int i=stack[top--]; 2ORNi,_I  
<lw` 3aa(  
pivotIndex=(i+j)/2; j9?}j #@  
pivot=data[pivotIndex]; 5iz{op<$,  
5!DBmAB  
SortUtil.swap(data,pivotIndex,j); wQP^WzNE  
.aAL]-Rj  
file://partition u frW\X  
l=i-1;  -xSA  
r=j; ~]pE'\D7Ad  
do{ ?Z Rs\+{vG  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7 %Oa;]|  
SortUtil.swap(data,l,r);  [F0s!,P  
} ~$:|VHl  
while(l SortUtil.swap(data,l,r); m?pstuUK(  
SortUtil.swap(data,l,j);  "HElB9  
lef2X1w}!  
if((l-i)>THRESHOLD){ 7'Zky2F  
stack[++top]=i; KIui(n#/  
stack[++top]=l-1; - }7e:!.  
} ej4W{IN~:  
if((j-l)>THRESHOLD){ Z:,U]Z(  
stack[++top]=l+1; 5p<ItU$pnL  
stack[++top]=j; !MYSfPdS  
} hAYTj0GZ  
T (OW  
} v, n$^R  
file://new InsertSort().sort(data); /<@SFF.  
insertSort(data); *c~T@m~DR  
} !46RGU:I  
/** { /K.3  
* @param data WN{ 9  
*/ 0 fF(Z0R,  
private void insertSort(int[] data) { 4]G?G]lS>  
int temp; x(hE3S#+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YQ+tDZY8`  
} iVp,e  
} z.$4!$q  
} 6-yd]("  
"U!AlZ`g  
} WG N=Y~E  
lD^]\;?  
归并排序: =yr0bGy`-  
?u/@PR\D  
package org.rut.util.algorithm.support; C\/xl#e<@  
?no fUD.  
import org.rut.util.algorithm.SortUtil; iYDEI e  
S4^vpY DeN  
/** yaah*1ip[  
* @author treeroot "^w]_^GD$d  
* @since 2006-2-2 lG4H:[5V  
* @version 1.0 0Fk5kGD,&K  
*/ [s"O mAy4  
public class MergeSort implements SortUtil.Sort{ O4r0R1VQM  
oFy=-p+C  
/* (non-Javadoc) }Mf!-g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ofPHmh`  
*/ &y3OR1_Sm*  
public void sort(int[] data) { yRSTk2N@  
int[] temp=new int[data.length]; )2V:  
mergeSort(data,temp,0,data.length-1); N}pw74=1  
} }`W){]{k O  
@6{~05.p  
private void mergeSort(int[] data,int[] temp,int l,int r){ @x"0_Qw  
int mid=(l+r)/2; lDOCmdt@N  
if(l==r) return ; rs,2rSsg!  
mergeSort(data,temp,l,mid); lV1G<qP  
mergeSort(data,temp,mid+1,r); tE@;X=  
for(int i=l;i<=r;i++){ POdUV  
temp=data; #0ETY\}ZD  
} eZ|%<Wpu  
int i1=l; R%Q@   
int i2=mid+1; FN\E*@>X=  
for(int cur=l;cur<=r;cur++){ `S6x<J&T\/  
if(i1==mid+1) cW i}V  
data[cur]=temp[i2++]; jUSmq m'  
else if(i2>r) Po ZuMF  
data[cur]=temp[i1++]; -u2P ?~  
else if(temp[i1] data[cur]=temp[i1++]; =x<ge_Y  
else {DU`[:SQZg  
data[cur]=temp[i2++]; oASY7k_3  
} }emN9Rj  
} (iL|Sq&}b  
f !s=(H;  
} 1+9W+$=h2  
POvP]G9'"  
改进后的归并排序: Z8rvWH9  
Pa~)"u 8  
package org.rut.util.algorithm.support; ~(Q)"s\1I  
@&X|5p"[g  
import org.rut.util.algorithm.SortUtil; +)y^ 'Qs  
{ jhr<  
/** UD8op]>L  
* @author treeroot xZ6~Ma 2z  
* @since 2006-2-2  .Nw=[  
* @version 1.0 W7U2MqQ  
*/ #=6E\&NC  
public class ImprovedMergeSort implements SortUtil.Sort { _(h&7P9  
T(t+ iv  
private static final int THRESHOLD = 10; A<1hOSCz\  
c- }X_)U }  
/* c17_2 @N  
* (non-Javadoc) _tBTE%sO  
* 8ELCs<xI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sC='_h  
*/ WN01h=1J_  
public void sort(int[] data) { %KmiH ;U  
int[] temp=new int[data.length]; u/M+u;  
mergeSort(data,temp,0,data.length-1); pL{U `5S  
} |962G1.  
Vm3v-=6  
private void mergeSort(int[] data, int[] temp, int l, int r) { rd9e \%A  
int i, j, k; =K6($|'=  
int mid = (l + r) / 2; ig/%zA*Bo  
if (l == r) .Yf:[`Q6g  
return; VxVE  
if ((mid - l) >= THRESHOLD)  #`o2Z  
mergeSort(data, temp, l, mid); qNYN-f~@,  
else D|Q#gcWpo  
insertSort(data, l, mid - l + 1); BZR:OtR^  
if ((r - mid) > THRESHOLD) nPye,"A Ol  
mergeSort(data, temp, mid + 1, r); ; mZW{j  
else !4^C #{$  
insertSort(data, mid + 1, r - mid); MO n  
8P1=[i]  
for (i = l; i <= mid; i++) { @ Wd9I;hWv  
temp = data; ~} ,=OF-b  
} k~jP'aD  
for (j = 1; j <= r - mid; j++) { h"_MA_]~  
temp[r - j + 1] = data[j + mid]; dHv68*^\'  
} BDR.AZ  
int a = temp[l]; 8xccp4  
int b = temp[r]; 3?1`D/  
for (i = l, j = r, k = l; k <= r; k++) { ;i<|9{;  
if (a < b) { tE)suU5Y  
data[k] = temp[i++]; prTw'~(B  
a = temp; FLGk?.x$\  
} else { Zo g']=  
data[k] = temp[j--]; ;xzUE`uUfJ  
b = temp[j]; hRK/T7v  
} <})2#sZO!  
} w-Da~[J  
} !*oi!ysU;O  
" N9 <wU  
/** 8 0Gn%1A9  
* @param data g7O qX \  
* @param l Sgp;@4`M  
* @param i px}|Mu7z~  
*/ >_|O1H./4  
private void insertSort(int[] data, int start, int len) { EUN81F?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $shoasSuI  
} :9^;Qv*  
} &(xH$htv1  
} i 7x7xtq  
} L{h%f4Du#  
vTlwRG=5  
堆排序: |j#C|V%kV  
1 D<_N  
package org.rut.util.algorithm.support; J"=vE=  
^yyC [Mz  
import org.rut.util.algorithm.SortUtil; wtH? [>S;)  
(2:/8\_P  
/** UN]f"k&  
* @author treeroot kw"SwdP5  
* @since 2006-2-2 >g+?Oebgw  
* @version 1.0 Y#u}tE d  
*/ SVO3821  
public class HeapSort implements SortUtil.Sort{ 8]M_z:F7F  
"a8j"lPJ  
/* (non-Javadoc) r=X}%~_8X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (^u1~1E 5  
*/ S"OR%  
public void sort(int[] data) { rdJ d#S  
MaxHeap h=new MaxHeap(); 1n:8s'\  
h.init(data); ?<(m 5Al7  
for(int i=0;i h.remove(); [^U#Qj)hL  
System.arraycopy(h.queue,1,data,0,data.length); 6P5Ih  
} ?34 e-  
/4` 0?/V  
private static class MaxHeap{ YwZ Z{+n  
Qzlo'e1  
void init(int[] data){ Axe8n1*y  
this.queue=new int[data.length+1]; SRrw0&ts  
for(int i=0;i queue[++size]=data; S5G6Rj@W  
fixUp(size); ^xij{W`|  
} nij!1z|M  
} D"J!\_o  
#ZYVc|sT+  
private int size=0; +YqZ ((  
$CY't'6Hn  
private int[] queue; -5I2ga  
2Fq<*pxAY  
public int get() { BPdfYu ,il  
return queue[1]; 34d3g  
} l,,> & F  
pBETA'fY  
public void remove() { }RwSp!}C  
SortUtil.swap(queue,1,size--); S%yd5<%_  
fixDown(1); a^=-Mp  
} 3WUTI(  
file://fixdown ($}`R xj1@  
private void fixDown(int k) { :&:JTa1cv  
int j; TW[_Ko86  
while ((j = k << 1) <= size) { ?)`L$Vr=  
if (j < size %26amp;%26amp; queue[j] j++; 5lm<%  
if (queue[k]>queue[j]) file://不用交换 )e a:Q?  
break; 49w=XJ  
SortUtil.swap(queue,j,k); Ee3hG2d`  
k = j; op6CA"w  
} 1. rj'  
} @ ]/AjjLt  
private void fixUp(int k) { %Mk0QKzUo  
while (k > 1) { /ew Ukc8,  
int j = k >> 1; }w1~K'ck}>  
if (queue[j]>queue[k]) QoG cWJ  
break; 1;mW,l'`  
SortUtil.swap(queue,j,k); 8[J}CdS  
k = j; /ig:9R  
} Um: Hrjw  
} dO4{|(z  
C\di7z:  
} !kE-_dY6)  
;ByOth|9P  
} /6h(6 *JI  
hrhb!0  
SortUtil: Xt#4/>dlR  
qt;y2gf=  
package org.rut.util.algorithm; Hrzf'a|^  
>&p0d0  
import org.rut.util.algorithm.support.BubbleSort; t$A%*JBKm  
import org.rut.util.algorithm.support.HeapSort; %"af748!+D  
import org.rut.util.algorithm.support.ImprovedMergeSort; -$WYj "  
import org.rut.util.algorithm.support.ImprovedQuickSort; L30$%G|  
import org.rut.util.algorithm.support.InsertSort; e}.^Tiwd]  
import org.rut.util.algorithm.support.MergeSort; k31I ysh  
import org.rut.util.algorithm.support.QuickSort; 5<ux6,E1{  
import org.rut.util.algorithm.support.SelectionSort; j'BMAn ?  
import org.rut.util.algorithm.support.ShellSort; ##EYH1P]  
hYM@?/(q  
/** Xa[?^P  
* @author treeroot ;\\@q"n%<  
* @since 2006-2-2 ODC8D>ZYl  
* @version 1.0 tX"Th'Qi  
*/ ,I_^IitN  
public class SortUtil { HfvTxaK  
public final static int INSERT = 1; Ie4hhW  
public final static int BUBBLE = 2; HjGyj/78w  
public final static int SELECTION = 3; K"[AxB'F  
public final static int SHELL = 4; 9> g,  
public final static int QUICK = 5; W"k8KODOY  
public final static int IMPROVED_QUICK = 6; Ce")[<:  
public final static int MERGE = 7; 6'RrQc=q  
public final static int IMPROVED_MERGE = 8; gF5a5T,  
public final static int HEAP = 9; Tp9- niW  
%B)6$!x  
public static void sort(int[] data) { IrWD%/$H  
sort(data, IMPROVED_QUICK); S-'fS2  
} qq1-DG  
private static String[] name={ mBG=jI "xh  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" BYo/57&:  
}; mUz\ra;z  
6^c>,.R  
private static Sort[] impl=new Sort[]{ ^+m+zd_  
new InsertSort(), i6 (a@KRY  
new BubbleSort(), ZU9c 5/J  
new SelectionSort(), A6pjRxg  
new ShellSort(), y:v xE8$Q  
new QuickSort(), DANw1 _X\  
new ImprovedQuickSort(), )h8\u_U  
new MergeSort(), =T7A]U]  
new ImprovedMergeSort(), y T#{UA^  
new HeapSort() 9gEssTkts  
}; Myq5b`z  
_+^ 2^TW  
public static String toString(int algorithm){ S9>0t0  
return name[algorithm-1]; acw4B5]  
} 3,Q^& 1  
#zR bx  
public static void sort(int[] data, int algorithm) { sqS=qC  
impl[algorithm-1].sort(data); XxaGp95so  
} f~_th @K  
Y"6w,_'m  
public static interface Sort { RNhJ'&SYs  
public void sort(int[] data); %T[^D&9$,  
} =Odv8yhn  
x $zKzfHW  
public static void swap(int[] data, int i, int j) { S>0nx ^P  
int temp = data; ZZ.m(A TR  
data = data[j]; A,) VM9M_l  
data[j] = temp; >N?2""  
} yx<WSgWZ[  
} Qo1eXMW  
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