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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。 N*eZ4s'  
插入排序: L9T|*?||  
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package org.rut.util.algorithm.support; 'h$1vT  
T5ol2  
import org.rut.util.algorithm.SortUtil; bYiaJ  
/** &T{+B:*v  
* @author treeroot Wa wOap  
* @since 2006-2-2 YM-,L-HMA  
* @version 1.0 Au9Rr3n  
*/ aPRF  
public class InsertSort implements SortUtil.Sort{ d+8Sypv^4*  
"lB[IB)  
/* (non-Javadoc) o]@?QAu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LqNsQu";  
*/ _k&vW(O=:  
public void sort(int[] data) { 5~v({R.  
int temp; l2i[wc"9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Pwf":U)  
} HUZI7rC[=)  
} L+&$/1h]  
} zpJQ7hym  
Zv-#v  
} vLq_l4l  
(<|,LagTuc  
冒泡排序: 3:s!0ty"  
*~cq (PFQ  
package org.rut.util.algorithm.support; O.i.<VD7  
C1hp2CW$5/  
import org.rut.util.algorithm.SortUtil; 0`:0m/fsU  
NbH;@R)L  
/** !IcP O  
* @author treeroot X-=49)  
* @since 2006-2-2 fTMn  
* @version 1.0 EW]rD  
*/ U 1vZ r{\  
public class BubbleSort implements SortUtil.Sort{ b:2# 3;)  
U`z=!KI+g  
/* (non-Javadoc) n&Bgpt~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S3$&}I <  
*/ BKi@c\Wb  
public void sort(int[] data) { eot%T h?[  
int temp; }Ge$?ZFH  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RGsgT^  
if(data[j] SortUtil.swap(data,j,j-1); a0~LZQ?  
} 3v\}4)A[  
} 0 *2^joUv  
} ]v=A}}kS  
} <m'W{n%Pp  
4S5U|n  
} 9!; /+P  
@P@?KZ..v!  
选择排序: PKJw%.-  
ZwM(H[iqL  
package org.rut.util.algorithm.support; \I (g70  
`p#tx.o  
import org.rut.util.algorithm.SortUtil; Zcjh  
lxf+$Z`~:  
/** .kcyw>T`I  
* @author treeroot LtW}R4}3  
* @since 2006-2-2 ?L x*MJZ  
* @version 1.0 1R-WJph  
*/ 7_HFQT1.N  
public class SelectionSort implements SortUtil.Sort { ^VOFkUp)  
H}?"2jF  
/* id+ ~ V  
* (non-Javadoc) ?k@^U9?R  
* Qco8m4n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F$M^}vsjGx  
*/ pLSh +*F  
public void sort(int[] data) { |0OY> 5  
int temp; |h%=a8  
for (int i = 0; i < data.length; i++) { 5X&Y~w,poU  
int lowIndex = i; 2u Zb2O  
for (int j = data.length - 1; j > i; j--) { a@!(o  )>  
if (data[j] < data[lowIndex]) { o, PpD,,  
lowIndex = j; z9Z4MXl  
} \(_(pcl  
} 0Xb,ne 7  
SortUtil.swap(data,i,lowIndex); 2ci[L:U  
} 6 dgwsl~  
} y*=sboX  
2DU Y4Ti  
} HA$X g j  
0RgE~x!hI  
Shell排序: F_G .$a Cc  
F%P"T%|  
package org.rut.util.algorithm.support; $7" Y/9Y  
0nbY~j$A=  
import org.rut.util.algorithm.SortUtil; Wn2'uZ5If  
BMug7xl"  
/** .J <t]  
* @author treeroot 0CO@@`~4  
* @since 2006-2-2 ml@;ngmp.  
* @version 1.0 `J] e.K  
*/ u8.F_'`z  
public class ShellSort implements SortUtil.Sort{ $Q"D>Qf{G  
P?p]sLrP  
/* (non-Javadoc)  LAkBf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e>6|# d  
*/ DL`8qJ'mJs  
public void sort(int[] data) { IdqCk0lVD  
for(int i=data.length/2;i>2;i/=2){ ":0u%E?s  
for(int j=0;j insertSort(data,j,i); By waD?  
} %_."JT$v{  
} k3K*{"z  
insertSort(data,0,1); {]2^b)  
} eAmI~oku  
Om^(CAp  
/** nrHC;R.nE  
* @param data aq)g&.dw?  
* @param j , # =TputM  
* @param i s_  t/  
*/ C~egF=w  
private void insertSort(int[] data, int start, int inc) { tn#cVB3  
int temp; fLnwA|n=  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O}>@G  
} /poGhB 1k  
} |.VSw  
} 4GbfA .u  
Y?TS,   
} @Ddz|4vEi  
(<YBvpt4>  
快速排序: EsGf+-}|!0  
6R,Y.srR  
package org.rut.util.algorithm.support; Q,:{(R  
tL3R<'  
import org.rut.util.algorithm.SortUtil; ^3[_4av  
6se8`[  
/** BBM[Fy37!}  
* @author treeroot ,`JYFh M  
* @since 2006-2-2 sC.b '1P  
* @version 1.0  $TfB72  
*/ (?m{G Q  
public class QuickSort implements SortUtil.Sort{ &#L C'  
(>vyWd]  
/* (non-Javadoc) O 2-n-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fGb}V'x}r  
*/ md*U  
public void sort(int[] data) { {.542}A  
quickSort(data,0,data.length-1); 1~ W@[D  
} 4j~q,# $LW  
private void quickSort(int[] data,int i,int j){ ~n- Px)  
int pivotIndex=(i+j)/2; LD ]-IX&L  
file://swap N"}>);r  
SortUtil.swap(data,pivotIndex,j); 5mQ@&E~#W  
mFg$;F  
int k=partition(data,i-1,j,data[j]); U|]cB  
SortUtil.swap(data,k,j); g'KxjjYT,  
if((k-i)>1) quickSort(data,i,k-1); ffG<hclk  
if((j-k)>1) quickSort(data,k+1,j); hH 5}%/vF  
TKM^  
} %ggf|\ -e  
/** P&sWn?q Ol  
* @param data )w0x{_  
* @param i s EFQ8S  
* @param j @QV0l]H0+  
* @return OL>)SJj5  
*/ H.\`(`6  
private int partition(int[] data, int l, int r,int pivot) { T[ZmD{6l  
do{ Rjq Xz6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ss[`*89  
SortUtil.swap(data,l,r); 0W(mx-[H/  
}  ][wb4$2  
while(l SortUtil.swap(data,l,r); o>_})WM1[  
return l; rw,Ylr :3  
} uG^CyM>R`  
^#d\HI  
} (B>/LsTu  
'g!T${  
改进后的快速排序: r5DR F4,7  
V_:`K$  
package org.rut.util.algorithm.support; S7)qq  
U3X5tED  
import org.rut.util.algorithm.SortUtil; ]:OrGD"  
B~w$j/sWU  
/** ID43s9  
* @author treeroot eJ99W=  
* @since 2006-2-2 Up{[baWF  
* @version 1.0 :D*U4< /u  
*/ =..Bh8P71!  
public class ImprovedQuickSort implements SortUtil.Sort { aOH|[  
^K;k4oK  
private static int MAX_STACK_SIZE=4096; EY)2,  
private static int THRESHOLD=10; . :Skc  
/* (non-Javadoc) j:h}ka/!p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sq!$+=1-X  
*/ mY.v:  
public void sort(int[] data) { 1Z) Et,  
int[] stack=new int[MAX_STACK_SIZE]; {1)A"lQu  
=0pt-FQ  
int top=-1; h+}BtKA  
int pivot; /~Y\KOH|  
int pivotIndex,l,r; r,Uk)xa/^  
!?nbB2,  
stack[++top]=0; hyH[`wiq  
stack[++top]=data.length-1; 5p (zhfuG  
_K o#36.S  
while(top>0){ C`hdj/!A  
int j=stack[top--]; eR$@Q  
int i=stack[top--]; LH5Z@*0#  
ECOJ .^  
pivotIndex=(i+j)/2; ~Q&J\'GQH  
pivot=data[pivotIndex]; } :0_%=)N<  
ob\-OMNs@  
SortUtil.swap(data,pivotIndex,j); K6kz{R%`  
hx9{?3#  
file://partition --WQr]U/  
l=i-1; E+aePoU  
r=j; S"cTi[9  
do{ L}`/v]E"eU  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Am<5J,<uy  
SortUtil.swap(data,l,r); xU.1GI%UPu  
} fzIs^(:fl  
while(l SortUtil.swap(data,l,r); }|.<EkA  
SortUtil.swap(data,l,j); |-Uh3WUE6  
J#I RbO)  
if((l-i)>THRESHOLD){ B&]`OO>O  
stack[++top]=i; M7TLQqaF  
stack[++top]=l-1; `,qft[1  
} (QDKw}O2b  
if((j-l)>THRESHOLD){ \baY+,Dr+  
stack[++top]=l+1; ZwkUd-=0i  
stack[++top]=j; z&6_}{2,]  
} 8zp?WUb  
./#YUIC  
} V4[-:k  
file://new InsertSort().sort(data); !Y ,7%  
insertSort(data); x4WCAqi/2  
} cUY-  
/** geme_  
* @param data eFG/!b<17  
*/ 3`bQ0-D;  
private void insertSort(int[] data) { ;P91'B~t  
int temp; QTy=VLk43  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); o-\h;aQJ  
} .9bi%=hP  
} WXy8<?s  
} w:5?ofC  
iXDG-_K  
} 32wtN8kx  
MgeC-XQM  
归并排序: W_W!v&@E=  
NiZfaC6V  
package org.rut.util.algorithm.support; Rl Oy,/-<  
?()*"+N(ck  
import org.rut.util.algorithm.SortUtil; W'C>Fn}lO?  
7hHID>,o9%  
/** ZSuoD$~k[  
* @author treeroot TxJk.c  
* @since 2006-2-2 OG5{oH#K  
* @version 1.0 }9^:(ty2A  
*/ M& ZKc  
public class MergeSort implements SortUtil.Sort{ tu\XuDk y  
y\T$) XGV  
/* (non-Javadoc) tgF~5 o}?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U#z"t&o=L  
*/ 3"h*L8No  
public void sort(int[] data) { ~<[+!&<U  
int[] temp=new int[data.length]; =-r"@2HBq  
mergeSort(data,temp,0,data.length-1); y!b2;- Dp  
} I~&*^q6 |  
GHsDZ(d3.  
private void mergeSort(int[] data,int[] temp,int l,int r){ s<!A< +Sh  
int mid=(l+r)/2; JWNN5#=fQ  
if(l==r) return ; W Z'<iI  
mergeSort(data,temp,l,mid); Jh-yIk  
mergeSort(data,temp,mid+1,r); E=I'$*C \D  
for(int i=l;i<=r;i++){ ]3 "0#Y  
temp=data; &W\e 5X<A  
} xrf|c  
int i1=l; [U&k"s?  
int i2=mid+1; Y/sav;  
for(int cur=l;cur<=r;cur++){ jj{:=l ZB  
if(i1==mid+1) f Fi=/}  
data[cur]=temp[i2++]; Qw0k-t0=4  
else if(i2>r) Cff6EE  
data[cur]=temp[i1++]; *y4DK6OFe  
else if(temp[i1] data[cur]=temp[i1++]; xm{?h,U,  
else P.Nt jz/B  
data[cur]=temp[i2++]; 9K$ x2U  
} zqA>eDx  
} HhynU/36  
^(q .f=I!a  
} QD-\'Bp/X  
mnA_$W3~I  
改进后的归并排序: S)EF&S(TC  
uuM1_nD[  
package org.rut.util.algorithm.support; sVh)Ofn  
I#OZ:g^  
import org.rut.util.algorithm.SortUtil; bc(MN8b]j  
-C2!`/U  
/** Zf$mwRS[_  
* @author treeroot :Racu;xf  
* @since 2006-2-2 3eUi9_s+  
* @version 1.0 )<QX2~m<  
*/ ~>@~U]  
public class ImprovedMergeSort implements SortUtil.Sort { -8)Hulo/{U  
ef'kG"1  
private static final int THRESHOLD = 10; /` M#  
e#oK% {A  
/* ;r@=[h   
* (non-Javadoc) 7&id(&y/  
* ,1I-%6L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;pm/nu  
*/ N^QxqQ~  
public void sort(int[] data) { LuZlGm  
int[] temp=new int[data.length]; t^&hG7L_m,  
mergeSort(data,temp,0,data.length-1); l;q]z  
} ]G i&:k  
'-"[>`[q  
private void mergeSort(int[] data, int[] temp, int l, int r) { ~7b#B XzP  
int i, j, k; oaj.5hM  
int mid = (l + r) / 2; NnAIL;WS  
if (l == r) (VO'Kd  
return; Z(q]rX5"  
if ((mid - l) >= THRESHOLD) ]aIHd]B  
mergeSort(data, temp, l, mid); _)j\ b  
else JL {H3r&/S  
insertSort(data, l, mid - l + 1); {+lU4u  
if ((r - mid) > THRESHOLD) s17)zi,?4  
mergeSort(data, temp, mid + 1, r); "`;-5dg  
else LGc8w>qE  
insertSort(data, mid + 1, r - mid); ]\rQ{No  
(&.T  
for (i = l; i <= mid; i++) { *C55DO^w  
temp = data; mx)!]B"  
} %oqKpD+  
for (j = 1; j <= r - mid; j++) { Ko&4{}/  
temp[r - j + 1] = data[j + mid]; 1 V]ws}XW  
} GG%;~4#2  
int a = temp[l]; P<>NV4  
int b = temp[r]; &j~9{ C  
for (i = l, j = r, k = l; k <= r; k++) { f@`|2wG  
if (a < b) { /S J><  
data[k] = temp[i++]; N4 x5!00  
a = temp; 8pEA3py  
} else { `Hw][qy#  
data[k] = temp[j--]; G+fo'ThG  
b = temp[j]; [Q:mq=<Z%  
} =oVC*b  
} &yP|t":HWX  
} $%$zZJ@/  
;39b.v\^  
/** Hya.OW{  
* @param data |fyzb=Lg  
* @param l I:t ?#)wl  
* @param i ^/2HH  
*/ gdCit-3  
private void insertSort(int[] data, int start, int len) { H*G(`Zl}  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); }bRn&)e  
} I Tl>HlS  
} p9jC-&:  
} (Q*x"G#4>  
} WZ`i\s1#  
gaC4u,Zb  
堆排序: R1 SFMI   
n;Mk\*Cg  
package org.rut.util.algorithm.support; E!ZLVR.K  
X> 98`  
import org.rut.util.algorithm.SortUtil; oAifM1*0  
onmpMU7w  
/** Cgln@Rz  
* @author treeroot (Zx--2lc  
* @since 2006-2-2 q~#>MB}".  
* @version 1.0 /t`|3Mw  
*/ e<uf)K=(C  
public class HeapSort implements SortUtil.Sort{ 0,-]O=   
X9PbU1o;  
/* (non-Javadoc) )a0l:jEOc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;HAvor=?  
*/ Q\zaa9P  
public void sort(int[] data) { %7 -(c  
MaxHeap h=new MaxHeap(); ;ZuHv {=  
h.init(data); xtCMK1# x  
for(int i=0;i h.remove(); J;<dO7j5  
System.arraycopy(h.queue,1,data,0,data.length); fn/?I \  
} s#<fj#S  
t{B@k[|  
private static class MaxHeap{ Z^Um\f   
Z796;qk  
void init(int[] data){ u[KxI9Q  
this.queue=new int[data.length+1]; >VZxDJ$R  
for(int i=0;i queue[++size]=data; v .*fJ   
fixUp(size); $@kOMT  
} <B T18u\  
} Kn3Xn`P?  
R`$Y]@i&B  
private int size=0; CAx$A[f<  
W%5))R$  
private int[] queue; I*j~5fsS'  
_QHk&-Lp  
public int get() { [>>_%T\I  
return queue[1]; oQpGa>6U&  
} )?OdD7gd  
Kg~D~ +j  
public void remove() { QuMv1)n  
SortUtil.swap(queue,1,size--); G>:v1lde  
fixDown(1); uX!6: v]  
} O13]H"O_  
file://fixdown {/)i}V#RE  
private void fixDown(int k) { vN v'%;L  
int j; H!0m8LCnb  
while ((j = k << 1) <= size) { Z&?4<-@6\p  
if (j < size %26amp;%26amp; queue[j] j++; l z"o( %D  
if (queue[k]>queue[j]) file://不用交换 %CYo, e  
break; pRh9+1EM;  
SortUtil.swap(queue,j,k); o "0 ~  
k = j; /Z]nV2$n)V  
} 1P"{TMd?  
} QKEtV  
private void fixUp(int k) { T^MY w  
while (k > 1) { \IC^z  
int j = k >> 1; &Jb$YKt  
if (queue[j]>queue[k]) IhK SwT  
break; |5`ecjb.  
SortUtil.swap(queue,j,k); q2F `q. j  
k = j; Lp"OXJ*es  
} IO&U=-pn&  
} $?!]?{K  
?7)v:$(G}  
} %Iflf]l  
"oiN8#Hf  
} _vb'3~'S  
?fP3R':s  
SortUtil: qT$IV\;_  
yogL8V-^4  
package org.rut.util.algorithm; *w. ":\P]  
,]yS BAO  
import org.rut.util.algorithm.support.BubbleSort; OY(CB(2N  
import org.rut.util.algorithm.support.HeapSort; <K&A/Ue  
import org.rut.util.algorithm.support.ImprovedMergeSort; ^HR8.9^[1u  
import org.rut.util.algorithm.support.ImprovedQuickSort; M]k Q{(  
import org.rut.util.algorithm.support.InsertSort; xMQ>,nZ  
import org.rut.util.algorithm.support.MergeSort; At[Q0'jkc  
import org.rut.util.algorithm.support.QuickSort; |*w)]2B l  
import org.rut.util.algorithm.support.SelectionSort; :zo5`[P  
import org.rut.util.algorithm.support.ShellSort; 1yz%ud-l  
9[X'9* ,  
/** .czUJyFms}  
* @author treeroot 2<OU)rVE4  
* @since 2006-2-2 y@$E5sz  
* @version 1.0 l=" X|t   
*/ dHiir&Rd9`  
public class SortUtil { 4x-,l1NMR  
public final static int INSERT = 1; K%L6UQ;  
public final static int BUBBLE = 2; ^S;{;c+'  
public final static int SELECTION = 3; Qp[ Jw?a  
public final static int SHELL = 4; 4Zu1G#(zP  
public final static int QUICK = 5; @i(9k  
public final static int IMPROVED_QUICK = 6; 451.VI}MR  
public final static int MERGE = 7; 68bvbig  
public final static int IMPROVED_MERGE = 8; V;RgO}  
public final static int HEAP = 9; NTX0vQG  
&d6ud |  
public static void sort(int[] data) { h*y+qk-!\g  
sort(data, IMPROVED_QUICK); $Yu'B_E6p  
} glo G_*W  
private static String[] name={ |uz<)  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <Qv/# k  
}; \reVA$M [  
1E||ft-1i*  
private static Sort[] impl=new Sort[]{ XRkUv>Yk  
new InsertSort(), q,#s m'S  
new BubbleSort(), G Wa6FX:/  
new SelectionSort(), " 1a!]45+  
new ShellSort(), 'ParMT  
new QuickSort(), 8Uh|V&  
new ImprovedQuickSort(), SD*q+Si,1U  
new MergeSort(), PHT<]:"`<  
new ImprovedMergeSort(), 'l!\2Wv2  
new HeapSort() l,Y5VGiH#  
}; Wk3-J&QbS  
2brY\c F  
public static String toString(int algorithm){ r{d@74  
return name[algorithm-1]; CeOA_M  
} Go:(R {P  
S9$,.aq  
public static void sort(int[] data, int algorithm) { 3)CIqN  
impl[algorithm-1].sort(data); ayn aV  
} E<! L^A M`  
=AzkE]   
public static interface Sort { 05HCr"k  
public void sort(int[] data); GK,{$SC+=  
} PX^ k;  
uUHWTyoO  
public static void swap(int[] data, int i, int j) { (i(E~^O  
int temp = data; n7~3~i` D;  
data = data[j]; t>%b[(a  
data[j] = temp; IFr"IOr'l  
} mT@Gf>}/A  
} 9&zR i  
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