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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。 HkgmZw,  
插入排序: ?hW?w$C  
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package org.rut.util.algorithm.support; f(Hh(  
>%vw(pt  
import org.rut.util.algorithm.SortUtil; Woo2hg-ti  
/** lz=DP:/&  
* @author treeroot 7.G1Q]6/  
* @since 2006-2-2 f{]eb1  
* @version 1.0 GoVB1)  
*/ G'*_7HD  
public class InsertSort implements SortUtil.Sort{ WGxe3(d  
[8T  
/* (non-Javadoc) fa~u<m   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3M/iuu  
*/ eh@6trzp=  
public void sort(int[] data) { b7X-mkF  
int temp; S}0W<H P  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yn0l}=, n  
} y-Xd~<*Ia  
} IB!^dhD!Q  
} K]0Q=HY{.  
hJ)>BeH0  
} HLjXH#ry  
b?h)~j5  
冒泡排序: ) ?AlQA  
cy0 %tsB|  
package org.rut.util.algorithm.support; \ow3_^Bk  
uyd y[n\  
import org.rut.util.algorithm.SortUtil; 2(s+?n.N  
R`7v3{  
/** CA0SH{PdW&  
* @author treeroot $?38o6  
* @since 2006-2-2 d@ +}_R"c  
* @version 1.0 $}{u6*u.,  
*/ urJ>dw?FI  
public class BubbleSort implements SortUtil.Sort{ 7N@4c   
~j1.;WId[  
/* (non-Javadoc) Afpj*o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i&|fGX?-I  
*/ iG:9uDY  
public void sort(int[] data) { 6CKWKc  
int temp; H|E{n/g  
for(int i=0;i for(int j=data.length-1;j>i;j--){ mPl2y3m%  
if(data[j] SortUtil.swap(data,j,j-1); D)yCuw{M:  
} @ y{i.G  
} d+ LEi^  
} :'\4%D=w  
} [31vx0$_p  
^qs{Cf$  
} 'Gn-8r+  
aWp9K+4R$/  
选择排序: GrwoV~  
ul{u^ j  
package org.rut.util.algorithm.support; buIy+  
a6UW,n"n  
import org.rut.util.algorithm.SortUtil; s_`PPl_D$K  
,I(PDlvtM  
/** ZcTxE]Y  
* @author treeroot 6$]p;}#  
* @since 2006-2-2 _h@s)"  
* @version 1.0 2r3]DrpJ  
*/ ] D(laqS;"  
public class SelectionSort implements SortUtil.Sort { %?o@YwBo^E  
$_2S,3 }  
/* ?, dbrQ  
* (non-Javadoc) @;T>*_Yhn  
* RVlAWw(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |FF"vRi8a7  
*/ 3f 1@<7*  
public void sort(int[] data) { &VY(W{\eY  
int temp; M<f=xY2$v  
for (int i = 0; i < data.length; i++) { "8p fLI  
int lowIndex = i; 2TR l @  
for (int j = data.length - 1; j > i; j--) { &4aY5y`8+f  
if (data[j] < data[lowIndex]) { qr5ME/)z  
lowIndex = j; b!>w4MPe  
} Ihe/P {t]J  
} Yl65|=n e  
SortUtil.swap(data,i,lowIndex); ##%R|P3  
} "82<}D^;  
} wm3fd 7T  
h6!o,qw"  
} k'_p*H  
\\j98(i  
Shell排序: owYSR?aG  
Y0kDHG  
package org.rut.util.algorithm.support; *`}4]OGv.  
6Y#-5oE u/  
import org.rut.util.algorithm.SortUtil; |( %3 '"Z  
wH:'5+u:6  
/** =c)O8  
* @author treeroot >[4;K&$B  
* @since 2006-2-2 <K8$00lm  
* @version 1.0 ` ,B&oV>  
*/ e/;1<5tfj  
public class ShellSort implements SortUtil.Sort{ Jm%hb ,  
^1&xt(G  
/* (non-Javadoc) @ 2mJh^cj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zTFfft<  
*/ -0KQR{LI  
public void sort(int[] data) { 0:W*_w0Ge  
for(int i=data.length/2;i>2;i/=2){ kNX(@f  
for(int j=0;j insertSort(data,j,i); @IaK:  
} .O\z:GrSZz  
} G$ l>By  
insertSort(data,0,1); 7=.}484>J  
} 4<`x*8` ,  
# ;,b4O7@  
/** ]jWe']T  
* @param data R/H ?/  
* @param j OL{U^uOhY  
* @param i O/gBBTB  
*/ sLx!Do$'  
private void insertSort(int[] data, int start, int inc) { %4Nq T  
int temp; a8?Zb^  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t7VXW{3  
} :K!@zT=o  
} J~Gq#C^e  
} Ji7%=_@'-#  
F,^<  
} URW#nm?  
&hmyfH&S  
快速排序: ~lx5RTkp  
C9-90,  
package org.rut.util.algorithm.support; S.o@95M   
'bP-p gc  
import org.rut.util.algorithm.SortUtil; o;o ji  
)t G`a ;  
/** =,D3e+P'  
* @author treeroot (h0i2>K  
* @since 2006-2-2 -I1Ne^DZn4  
* @version 1.0 )Cuc ]>SC  
*/ j)Z3m @Ii5  
public class QuickSort implements SortUtil.Sort{ ~+VIELU<%  
*Z7W'-  
/* (non-Javadoc) &~ g||rq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CtbmX)vE  
*/ ;9,<&fe  
public void sort(int[] data) { LC5NB{b\%>  
quickSort(data,0,data.length-1); f\ oB/  
} A"S{W^iL  
private void quickSort(int[] data,int i,int j){ %YhZ#>WT  
int pivotIndex=(i+j)/2; ;4nz'9+  
file://swap  EthnI7Y  
SortUtil.swap(data,pivotIndex,j); zosJ=$L  
#vhxW=L`=  
int k=partition(data,i-1,j,data[j]); imdfin?=   
SortUtil.swap(data,k,j); B7qm;(?X&  
if((k-i)>1) quickSort(data,i,k-1); +{ QyB  
if((j-k)>1) quickSort(data,k+1,j); |H&2[B"l  
g/+P]c6/  
} o.5w>l!9K  
/** sL;qC\S  
* @param data c ?mCt0Cg  
* @param i Bb];qYuCO  
* @param j IfoeHAWX  
* @return ya]CxnKR3  
*/ A{Giz&p  
private int partition(int[] data, int l, int r,int pivot) {  WpX)[au  
do{ EfY|S3Av  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >Pv#)qtm  
SortUtil.swap(data,l,r); #RoGyrLo  
} rlYAy5&  
while(l SortUtil.swap(data,l,r); V7u;"vD  
return l; T78`~-D4<  
} =iy%;>I `  
 +Io^U  
} M{+Ie?ZI  
oB8u[ !  
改进后的快速排序: i Xtar;%  
|`9POl=  
package org.rut.util.algorithm.support; =LHE_ AA  
BnH< -n_  
import org.rut.util.algorithm.SortUtil; ?DEj| i8  
d?_Bll"  
/** 5nIm7vlQm  
* @author treeroot xMDx<sk  
* @since 2006-2-2 8$<jd^w  
* @version 1.0 h^ ex?  
*/ DPn]de:e  
public class ImprovedQuickSort implements SortUtil.Sort { hVRpk0IJDK  
#KZ6S9>@  
private static int MAX_STACK_SIZE=4096; RKaCX:  
private static int THRESHOLD=10; g W'aK>*c  
/* (non-Javadoc) P?*$Wf,~n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;X6FhQ;{*0  
*/ *M;!{)m?  
public void sort(int[] data) { -~eNC^t;W  
int[] stack=new int[MAX_STACK_SIZE]; %'Ebm  
BY"<90kBL  
int top=-1;  :0ZFbIy  
int pivot; uArs[e|f  
int pivotIndex,l,r; |4BS\fx~N  
siw } }}  
stack[++top]=0; > Zo_-,  
stack[++top]=data.length-1; [*w^|b ?  
V%?oI]" l  
while(top>0){ 17[7)M88  
int j=stack[top--]; TFWV(<  
int i=stack[top--]; XRVE8v+  
n= yT%V. l  
pivotIndex=(i+j)/2; ;1}~(I#Y  
pivot=data[pivotIndex]; qsXK4`  
^R\0<\'  
SortUtil.swap(data,pivotIndex,j); WlU^+ctS  
 q%,q"WU  
file://partition 0EfM~u  
l=i-1; ,g%2-#L%  
r=j; wI\v5&X-B  
do{ 8C4DOz|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E$m3Gg)s>N  
SortUtil.swap(data,l,r); FQ>KbZh  
} jx a?  
while(l SortUtil.swap(data,l,r); 'E+Ty(ED5  
SortUtil.swap(data,l,j); j?4k{?x  
W!4(EdT*Cq  
if((l-i)>THRESHOLD){ E[HXbj"  
stack[++top]=i; TTpK8cC  
stack[++top]=l-1; #4_'%~-e  
} Ua]shSjyI  
if((j-l)>THRESHOLD){ =@;uDu:Q  
stack[++top]=l+1; j K?GB  
stack[++top]=j; c.m8~@O5+  
} ^Fgmwa'  
ZWaHG_ U)  
} .)|r!X  
file://new InsertSort().sort(data); .]g>.  
insertSort(data); ^il'Q_-{  
} (1gfb*L  
/** sL]KBux  
* @param data vttmSdY  
*/ J_]?.V*A  
private void insertSort(int[] data) { F,EcqM'f  
int temp; M~7gUb|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 54s+4R FL  
} $J&ww P[  
} 6j@3C`Yd  
} "P`V|g  
MHmaut#  
} :Lqz`  
|H 0+.f;  
归并排序: Bh?K_{e  
q:@$$}FjL  
package org.rut.util.algorithm.support; !q;EC`i#  
%YLdie6c  
import org.rut.util.algorithm.SortUtil; J4!Om&\@  
E]V:@/(M'  
/** &S9Sl  
* @author treeroot =FQ]eb*  
* @since 2006-2-2 ,2S w6u  
* @version 1.0 >Du5B&41  
*/ /PF X1hSu  
public class MergeSort implements SortUtil.Sort{ $EHAHNL?Lx  
XNkw9*IT  
/* (non-Javadoc) W*i PseXq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o,(MB[|hQ  
*/ (5rH 72g(  
public void sort(int[] data) { 4tU3+e5h  
int[] temp=new int[data.length]; YpMQY-n  
mergeSort(data,temp,0,data.length-1); nBv|5$w:  
} DZKVZ_q  
O?|opD  
private void mergeSort(int[] data,int[] temp,int l,int r){ q\*",xZxwz  
int mid=(l+r)/2; DJP)V8]!B  
if(l==r) return ; ~.7r  
mergeSort(data,temp,l,mid); 9MA/nybI  
mergeSort(data,temp,mid+1,r); v`evuJ\3  
for(int i=l;i<=r;i++){ eU?SLIof[{  
temp=data; H~JPsS;  
} .q#2 op  
int i1=l; T<kyxbjR  
int i2=mid+1; bSsX)wHm  
for(int cur=l;cur<=r;cur++){ !4 `any  
if(i1==mid+1) I_N(e|s\U  
data[cur]=temp[i2++]; ~E&drl\  
else if(i2>r) s,> 1n0a  
data[cur]=temp[i1++]; '^ "6EF.R  
else if(temp[i1] data[cur]=temp[i1++]; ,9Y{x  
else Ex^|[iV  
data[cur]=temp[i2++]; G m40u/  
} f@Mm{3&.  
} !^BXai/  
i3g;B?54  
} (NrH)+)J!a  
os*QWSs  
改进后的归并排序: gK7j~.bb"  
C*Avu  
package org.rut.util.algorithm.support; ~jMdM~}  
wZN<Og+;  
import org.rut.util.algorithm.SortUtil; lSU&Yqx  
~t\Hb8o  
/** rf1Us2vp  
* @author treeroot L/9f"%kZ  
* @since 2006-2-2 yEL^Y'x?  
* @version 1.0 R06q~ >  
*/ Qag@#!&n  
public class ImprovedMergeSort implements SortUtil.Sort { OO5k _J  
@*jd.a`  
private static final int THRESHOLD = 10; `~Nd4EA)2  
=;Gy"F1 dp  
/* A; Rr#q<  
* (non-Javadoc) oW3{&vfz  
* E`%Ewt$Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^50#R< Ny  
*/ }TD$ !  
public void sort(int[] data) { *X_CtjgF  
int[] temp=new int[data.length]; :9!? ${4R  
mergeSort(data,temp,0,data.length-1); ]p>6r*/nw  
} Hp;Dp!PLa  
`vWFTv  
private void mergeSort(int[] data, int[] temp, int l, int r) { i_T8Bfd:  
int i, j, k; "2:]9j  
int mid = (l + r) / 2; =B O} hk  
if (l == r) p|VoIQY  
return; >i=^Mh-bm  
if ((mid - l) >= THRESHOLD) oyV@BHJO@  
mergeSort(data, temp, l, mid); x gP/BK2"  
else Z7?C^m  
insertSort(data, l, mid - l + 1); 7Wub@Mp  
if ((r - mid) > THRESHOLD) 6( TG/J  
mergeSort(data, temp, mid + 1, r); <*u[<  
else &scHyt  
insertSort(data, mid + 1, r - mid); QZ(se  
(5S(CYls  
for (i = l; i <= mid; i++) { p\5DW'  
temp = data; O@St^o*A}  
} A`2l;MW  
for (j = 1; j <= r - mid; j++) { ~9#[\/;"  
temp[r - j + 1] = data[j + mid]; 9Cbf[\J!bq  
} aLapb5VV  
int a = temp[l]; JJlwzH  
int b = temp[r]; ;7CE{/Bq.p  
for (i = l, j = r, k = l; k <= r; k++) { D/C,Q|Ya6  
if (a < b) { Z'iXuI49  
data[k] = temp[i++]; Bgs3sM9  
a = temp; }I_/>58  
} else { `ZL~k  
data[k] = temp[j--]; ;\yY*  
b = temp[j]; > E;`;b  
} R:HF~}  
} A\J|eSG'$  
} KsI[  
((L=1]w  
/** "1P8[  
* @param data #:"F-3A0  
* @param l 7+';&2M)n~  
* @param i EJ&[I%jU  
*/ X=]FVHV;  
private void insertSort(int[] data, int start, int len) { )+T\LU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 'P(S*sr  
} Dl hb'*@  
} f%ude@E3  
} 2VaQxctk  
} 0X =Yly*m@  
& xOEp  
堆排序: GQ~wx1jj1  
q]+'{Ci@  
package org.rut.util.algorithm.support; Ru8k2d$B  
nE+OBdl  
import org.rut.util.algorithm.SortUtil; .T0w2Dv/  
Stqlp<xy  
/** "i/ l'  
* @author treeroot Oi# F  
* @since 2006-2-2 2:0'fNXop  
* @version 1.0 =jZ}@L/+  
*/ z45 7/zO  
public class HeapSort implements SortUtil.Sort{ :db:|=#T  
k@r%>Ul@  
/* (non-Javadoc) h3y0bV[g=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FWpcWmS`s  
*/ ~_^#/BnAl  
public void sort(int[] data) { F8{"Rk}  
MaxHeap h=new MaxHeap(); L h"K"Uv  
h.init(data); # T_m|LN 7  
for(int i=0;i h.remove(); hd*bPj ;  
System.arraycopy(h.queue,1,data,0,data.length); YSi[s*.G  
} z/zUb``  
n<47#-  
private static class MaxHeap{ .|x\6 jf  
y7J2: /@[x  
void init(int[] data){ Hbz>D5$  
this.queue=new int[data.length+1]; ^gx`@^su  
for(int i=0;i queue[++size]=data; /7Z5_q_  
fixUp(size); .*+?]  
} 9Qja|;  
} CD|)TXy  
PMPB}-d  
private int size=0; $|~YXH~O  
f?)BAah  
private int[] queue; y>}dKbCN  
LJ7Qwh_",  
public int get() { 3 D<s #  
return queue[1]; D{1k{/cF  
} O_@  
Qu4Bd|`(k  
public void remove() { et[n;nl>V  
SortUtil.swap(queue,1,size--); os/_ObPiX  
fixDown(1); O3, IR1  
} := OdjfhY  
file://fixdown &~`Ay4hq  
private void fixDown(int k) { [|{2&830  
int j; _?]E)i'RI  
while ((j = k << 1) <= size) { w7d(|`  
if (j < size %26amp;%26amp; queue[j] j++; CMk0(sztU_  
if (queue[k]>queue[j]) file://不用交换 Y"J' 'K  
break;   -58  
SortUtil.swap(queue,j,k); Wp!#OY1?  
k = j; xD[O8vQE  
} nff X  
} Kgev*xg  
private void fixUp(int k) { 0< i]ph  
while (k > 1) { ^&gu{kP  
int j = k >> 1; d&mSoPf  
if (queue[j]>queue[k]) " sh%8 <N  
break; @lvvI<U  
SortUtil.swap(queue,j,k); I9JiH,+  
k = j; o/ Z  
} ?"oW1a\  
} ;2lKo="  
f0UB? |  
} l)@Zuh  
lP$bxUNt  
} fB .xjp?  
~zdHJ8tYp  
SortUtil: 9='a9\((mH  
a:$hK%^ \  
package org.rut.util.algorithm; x4@v$phyH  
d1MY>zq  
import org.rut.util.algorithm.support.BubbleSort; Z/#l~.o[  
import org.rut.util.algorithm.support.HeapSort; )a:j_jy  
import org.rut.util.algorithm.support.ImprovedMergeSort; $#|iKi<Y@j  
import org.rut.util.algorithm.support.ImprovedQuickSort; U;%I" p`Z/  
import org.rut.util.algorithm.support.InsertSort; 8WT^ES~C  
import org.rut.util.algorithm.support.MergeSort; or2BG&W  
import org.rut.util.algorithm.support.QuickSort; X~ca8!Dq  
import org.rut.util.algorithm.support.SelectionSort; 6|# +  
import org.rut.util.algorithm.support.ShellSort; f+*wDH  
tl.I:A5L  
/** $nX4!X  
* @author treeroot $F> #1:=v<  
* @since 2006-2-2 _ ," -25a  
* @version 1.0 cE}y~2cH  
*/ ]xJ5}/  
public class SortUtil { :)/%*<vq,  
public final static int INSERT = 1; ~hYTs  
public final static int BUBBLE = 2; 8^/V2;~^,>  
public final static int SELECTION = 3; mc{gcZIm  
public final static int SHELL = 4; >GRL5Iow  
public final static int QUICK = 5; e+Qq a4  
public final static int IMPROVED_QUICK = 6; '3B\I#  
public final static int MERGE = 7; cY&SKV#  
public final static int IMPROVED_MERGE = 8; /{|<3CEe  
public final static int HEAP = 9; EvA{@g4>  
\SA"DT  
public static void sort(int[] data) { ,{4G@:Fm  
sort(data, IMPROVED_QUICK); ] T `6Hz!  
} JPeZZ13sS  
private static String[] name={ \2$-.npz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h( lkC[a&  
}; p8yn? ~]^  
EVovx7dr  
private static Sort[] impl=new Sort[]{ !uIT5D  
new InsertSort(), DyZe+,g;S  
new BubbleSort(), l# -4}95  
new SelectionSort(), j,7NLb9M  
new ShellSort(), Rg4'9I%B  
new QuickSort(), .23z\M8 -  
new ImprovedQuickSort(), M\%LB}4M  
new MergeSort(), o: \&4z&=  
new ImprovedMergeSort(), al{;]>W  
new HeapSort() V1aWVLltj  
}; TDvUiJm  
41\r7 BS  
public static String toString(int algorithm){ m 6V:x/'=  
return name[algorithm-1]; +kh#Jq.  
} # X~{p4Lr  
Fbvw zZ  
public static void sort(int[] data, int algorithm) { S1_X@[t  
impl[algorithm-1].sort(data); xR9<I:^&  
} NF/@'QRT  
^F5Q(A  
public static interface Sort { #Y)Gos  
public void sort(int[] data); Z^Y_+)=s  
} +4[L_  
a(!_ 3i@  
public static void swap(int[] data, int i, int j) { S4n ~wo  
int temp = data; %}t<,ex(yO  
data = data[j]; -}2'P)Xp  
data[j] = temp; f7y a0%N  
} 0RaE!4)!;  
} d E0 `tX  
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