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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。 JP<j4/  
插入排序: |nx3x  
xz!0BG  
package org.rut.util.algorithm.support; w)+1^eW  
xB Wl|j  
import org.rut.util.algorithm.SortUtil; Cy$~H  
/** [#uhMn^  
* @author treeroot )H W   
* @since 2006-2-2 }={@_g#  
* @version 1.0 8fP2qj0  
*/ ^7aqe*|vm  
public class InsertSort implements SortUtil.Sort{ Rh^@1{yr  
n!/0yR2S  
/* (non-Javadoc) ~iH a^i?2*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :a;F3NJ  
*/ @e3+Gs  
public void sort(int[] data) { oLKliA=q  
int temp; M^:JhX{  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !\R5/-_UU  
} e3SnC:OWf  
} Az:~|P  
} 5WHz_'c  
zU&Iy_Ke.  
} qSr]d`7@  
'fU#v`i  
冒泡排序: 6I"KomJ9  
h#r~2\q4ei  
package org.rut.util.algorithm.support; ;O`f+rG~  
dfdK%/' $(  
import org.rut.util.algorithm.SortUtil; e7;7TrB.  
:KO&j"[  
/** j;`Q82V\  
* @author treeroot Hvk~BP' m  
* @since 2006-2-2 /ZV2f3;t  
* @version 1.0 yHw @Z  
*/ m)p|NdTZc8  
public class BubbleSort implements SortUtil.Sort{ (dSYb&]  
ZDmL?mC  
/* (non-Javadoc) Lf5zHUH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MQwxQ{  
*/ Gb `)d  
public void sort(int[] data) { S2'ai  
int temp; (_e[CqFu  
for(int i=0;i for(int j=data.length-1;j>i;j--){ vlkw Wm  
if(data[j] SortUtil.swap(data,j,j-1); $8eiifj  
} =|E "  
} &wK:R,~x6  
} ik(YJw'i7E  
} gW~T{+f  
cgrSd99.  
} 68u?}8}  
A|f6H6UUx  
选择排序: <7 U~0@<Y  
b&[".ibN1  
package org.rut.util.algorithm.support; &!/>B .  
Li5&^RAo|J  
import org.rut.util.algorithm.SortUtil; .|[{$&B  
YgcW1}  
/** )v;O2z  
* @author treeroot B=d< L^  
* @since 2006-2-2 `YqtI/-w  
* @version 1.0 6o#/[Tz  
*/ {OPEW`F  
public class SelectionSort implements SortUtil.Sort { Qa=Y?=Za  
PSq?8.  
/* Vt}QP Nt  
* (non-Javadoc) p}!i_P  
* ASbI c"S6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DW7E ]o  
*/ h s',f  
public void sort(int[] data) { Zu|NF uFI  
int temp; B.G6vx4yp  
for (int i = 0; i < data.length; i++) { L&kCI`Tb  
int lowIndex = i; HN5661;8  
for (int j = data.length - 1; j > i; j--) { ;"Gy5  
if (data[j] < data[lowIndex]) { pCIS8 2L  
lowIndex = j; 0R)x"4Ww  
} Yg.[R] UC  
} HZ'rM5Kq  
SortUtil.swap(data,i,lowIndex); o^2MfFS  
} ZXb|3|D  
} F0_w9"3E~  
fU|v[  
} .S|7$_9;b  
Jd7chIK  
Shell排序: M99ku'  
]6Iu\,#J  
package org.rut.util.algorithm.support; ,VVA^'+  
ys=} V|  
import org.rut.util.algorithm.SortUtil; D?_K5a&v,  
Qg/FFn^Kg*  
/** l0,VN,$Yl  
* @author treeroot y5eEEG6  
* @since 2006-2-2 B%\&Q @X  
* @version 1.0 htbE Q NW  
*/ I;'{X_9$a  
public class ShellSort implements SortUtil.Sort{ Nt $4;  
i24k ]F  
/* (non-Javadoc) u1X^#K$nu'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X\;:aRDS  
*/ Im~DK  
public void sort(int[] data) { r gIWM"  
for(int i=data.length/2;i>2;i/=2){ 9 ~W]D!m,  
for(int j=0;j insertSort(data,j,i); +45SKu=  
} _$AM=?P &  
} q{&c?l*2  
insertSort(data,0,1); oH=?1~ e  
} D-{*3?x  
gPCf+>X{  
/** nBk&+SN  
* @param data ppz3"5  
* @param j %l!A%fn(  
* @param i 'EIe5O p  
*/ ra'/~^9  
private void insertSort(int[] data, int start, int inc) { EFC+7L(j  
int temp; qj _0 td$  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'zm5wqrkAd  
} }MOXJb @  
} v)O0i2  
} 3/]1m9x  
E$ \l57  
} s\ C ,5  
NC~?4F[  
快速排序: =i  vlS  
f%EHzm/V  
package org.rut.util.algorithm.support; *xxk70Cb  
b, a7XANsh  
import org.rut.util.algorithm.SortUtil; 129\H< m  
.Qrpz^wdt  
/** }=EJM7sM|k  
* @author treeroot `\VtTS  
* @since 2006-2-2 d\>XfS  
* @version 1.0 -& (iU#W  
*/ \ 86 g y/  
public class QuickSort implements SortUtil.Sort{ OD~Q|I(j  
t4UK~ {gh  
/* (non-Javadoc) LA;f,CQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2!-Q!c`y  
*/ `W1uU=c  
public void sort(int[] data) { 0M;g&&mF  
quickSort(data,0,data.length-1); >s/_B//[  
} [;ZCq!)>  
private void quickSort(int[] data,int i,int j){ H8w[{'Mei  
int pivotIndex=(i+j)/2; @H`jDaB 9  
file://swap ZX&e,X~V  
SortUtil.swap(data,pivotIndex,j); S~:uOm2t\  
c"tlNf?  
int k=partition(data,i-1,j,data[j]); lUjZ=3"'  
SortUtil.swap(data,k,j); _<f%== I'  
if((k-i)>1) quickSort(data,i,k-1); [4#HuO@h  
if((j-k)>1) quickSort(data,k+1,j); QP\:wi  
GY?u+|Q  
} ~v(c9I)  
/** 5!A:xV]6]  
* @param data k9*UBx  
* @param i Fb1<Ic#  
* @param j VX&g[5zr  
* @return RTlC]`IGT  
*/ 9 RDs`>v  
private int partition(int[] data, int l, int r,int pivot) { {v'eP[  
do{ ?{'_4n3O  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yn!;Z ._  
SortUtil.swap(data,l,r); #+D][LH4  
} M <JX  
while(l SortUtil.swap(data,l,r); ^&&Wv'7XQ  
return l; yFk|8d-|  
} {,5 .svO  
`5- ;'nX  
} <VD7(j]'^  
CP\[9#]:  
改进后的快速排序: YZfi-35@g  
0B8Wf/j?M  
package org.rut.util.algorithm.support; BTwc(oL  
S}rEQGGR{  
import org.rut.util.algorithm.SortUtil; ahg P"Qz  
<k8WnA ~Fl  
/** Fq~Zr;A  
* @author treeroot M 0}r)@  
* @since 2006-2-2 dCM &Yf}K  
* @version 1.0 ]R\L~Kr  
*/ mRAt5a#is  
public class ImprovedQuickSort implements SortUtil.Sort { k(RKAFjY  
K@e2%hk9x  
private static int MAX_STACK_SIZE=4096; B ZU@W%E  
private static int THRESHOLD=10; +)yoQRekX  
/* (non-Javadoc) {f/]K GGk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vmNo~clt\  
*/ <m\Y$Wv  
public void sort(int[] data) { xkFa  
int[] stack=new int[MAX_STACK_SIZE]; [?N,3  
8!35 K  
int top=-1; j)8$hK/e0.  
int pivot; ">=Ep+ix  
int pivotIndex,l,r; to).PI?  
r&xIVFPI[  
stack[++top]=0; H2|'JA#v  
stack[++top]=data.length-1; x7 e0&  
F^{31iU~CX  
while(top>0){ 'eBD/w5U  
int j=stack[top--]; q 1xSylE  
int i=stack[top--]; ;iYCeL(  
*J^FV^E``  
pivotIndex=(i+j)/2; 3}V (8  
pivot=data[pivotIndex]; <;#gcF[7>  
Qa/1*Mb  
SortUtil.swap(data,pivotIndex,j); Kh4rl)L*+%  
#@-dT,t  
file://partition :j~4mb?$  
l=i-1; ;g8v7>p  
r=j; :4[>]&:u3  
do{ KW'nW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >!Y#2]@}o  
SortUtil.swap(data,l,r); `vzMuL;  
} x(sKkm`Q  
while(l SortUtil.swap(data,l,r); 00IW9B-  
SortUtil.swap(data,l,j); >a*dI_XE  
M*n94L=Sg&  
if((l-i)>THRESHOLD){ oMAUR "  
stack[++top]=i; 6@lZVM)E  
stack[++top]=l-1; VTR4uT-  
} z l`m1k-X  
if((j-l)>THRESHOLD){ ;yqHt!N  
stack[++top]=l+1; sK W~+ ]  
stack[++top]=j; {9;-5@b  
} tkm@&e=e%  
E3p$^['vx  
} WYRC_U7  
file://new InsertSort().sort(data); eK(k;$4\^Y  
insertSort(data); {~]5QKg.  
} l #C<bDw  
/** 1F>8#+B/W  
* @param data wKdWE`|y  
*/ 6K7lQ!#}Q  
private void insertSort(int[] data) { h3E}Sa(MQ:  
int temp; lGK7XAx,  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  7Oe$Ou  
} z7BFkZ6+  
} SN")u  
} ^& *;]S`  
*GYLj[  
} oH4zW5  
/+B6oE>8  
归并排序: MV3K'<Y  
kz}Bc F  
package org.rut.util.algorithm.support; )$1j"mV  
s+_8U}R  
import org.rut.util.algorithm.SortUtil; J*K=tA  
-]}#Z:&  
/** lmUCrs37  
* @author treeroot XySkm2y  
* @since 2006-2-2 f'"PQr^9  
* @version 1.0 /T  {R\  
*/ ;2`t0#J$]  
public class MergeSort implements SortUtil.Sort{ W\0u[IV.x  
6yUThv.G#  
/* (non-Javadoc) %j@/Tx/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y5ei:r|^  
*/ cGo_qR/B(>  
public void sort(int[] data) { hFtjw6  
int[] temp=new int[data.length]; n|T$3j)  
mergeSort(data,temp,0,data.length-1); n>B ,O  
} ?Qd`Vlp7  
d14@G4#Bd  
private void mergeSort(int[] data,int[] temp,int l,int r){ !S7?:MJ?p\  
int mid=(l+r)/2; Z$c&Y>@)  
if(l==r) return ; *C|*{!  
mergeSort(data,temp,l,mid); 90F.9rh  
mergeSort(data,temp,mid+1,r); /Dc54U n  
for(int i=l;i<=r;i++){ ?HOnDw.v1  
temp=data; U7/ =| Z  
} 'S74Ys=-0  
int i1=l; Nf* .r  
int i2=mid+1; D|$0~1y  
for(int cur=l;cur<=r;cur++){ F@ pf._c  
if(i1==mid+1) K&{ _s  
data[cur]=temp[i2++]; |;aZi?Ek[  
else if(i2>r) "ivVIq2  
data[cur]=temp[i1++]; j p}.W  
else if(temp[i1] data[cur]=temp[i1++]; BINHCZ  
else =^Ws/k  
data[cur]=temp[i2++]; FmF[S&gFRs  
} uF3{FYM{I  
} Exv!!0Cd^  
iu{;|E  
} VR_/Vh ]@  
AK'3N1l`  
改进后的归并排序: m=COF$<  
I5[@C<b  
package org.rut.util.algorithm.support; o*d(;  
+7lr#AvU/  
import org.rut.util.algorithm.SortUtil; c>c4IQ&d  
wj'fdrY5h  
/** )BaGY  
* @author treeroot J^DyhCs  
* @since 2006-2-2 A? jaS9 &)  
* @version 1.0 pcOKC0b.  
*/ pE+:tMH;  
public class ImprovedMergeSort implements SortUtil.Sort { H,EZ% Gl  
d6m&nj  
private static final int THRESHOLD = 10; ??#EG{{  
;*nzb!u\\  
/* DH$Nz  
* (non-Javadoc) K'Wv$[~Dc  
* ;sUvY*Bcm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cw0 @Z0  
*/ #jxPh!%9  
public void sort(int[] data) { p}I\H ^"8+  
int[] temp=new int[data.length]; D'D IC  
mergeSort(data,temp,0,data.length-1); 4 u0?[v[Hu  
} Ps 0<CUyI  
eLHhfu;k  
private void mergeSort(int[] data, int[] temp, int l, int r) { e<A>??h^  
int i, j, k; ox.kL  
int mid = (l + r) / 2; MR@Qn[RdM  
if (l == r) 0[uOKFgE  
return; >x~Qa@s;  
if ((mid - l) >= THRESHOLD) 0&kmP '  
mergeSort(data, temp, l, mid); /{[tU-}qJ  
else hCX/k<}I  
insertSort(data, l, mid - l + 1); ?mVSc/  
if ((r - mid) > THRESHOLD) u]9 #d^%V  
mergeSort(data, temp, mid + 1, r); NYxL7:9  
else 8U]mr+  
insertSort(data, mid + 1, r - mid); 09Q5gal  
nemC-4}  
for (i = l; i <= mid; i++) { >wYmx4W>  
temp = data; UT 7'-  
} \|]+sQWQ  
for (j = 1; j <= r - mid; j++) { #+h#b%8  
temp[r - j + 1] = data[j + mid]; Mbly-l{|  
} D#Mz#\4o  
int a = temp[l]; <O-R  
int b = temp[r]; Sy*p6DP  
for (i = l, j = r, k = l; k <= r; k++) { j,i)ecZ>  
if (a < b) { >G[:Q s  
data[k] = temp[i++]; %\'G2  
a = temp;  l]   
} else { L&|^y8  
data[k] = temp[j--]; `6NcE-oJ  
b = temp[j]; @L607[!?  
} 8{&.[S C7  
} %l%2 hvGZ  
} ?d3<GhzlR3  
CNWA!1n^Hy  
/** "N,@J-]/k  
* @param data Gt,VSpb~s  
* @param l 2>CR]  
* @param i HB<>x  
*/ +n &8" )  
private void insertSort(int[] data, int start, int len) { v`qXb$YW  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 5VVU%STP  
} 5lwMc0{/3  
} 7~N4~KAUS  
} "r@G V5ED  
} $RC)e 7  
-\Z`+kY?p  
堆排序: Qo(<>d  
c|iTRco  
package org.rut.util.algorithm.support; 11A$#\,  
5@W63!N  
import org.rut.util.algorithm.SortUtil; @6;ZP1  
egWfKL&iy  
/** Kb/qM}jS  
* @author treeroot &g8Xjx&zj  
* @since 2006-2-2 02:`Joy2D  
* @version 1.0 v(uNqX.BC  
*/ @y eAM7  
public class HeapSort implements SortUtil.Sort{ !,J] 5$M  
9m"EY@-  
/* (non-Javadoc) urL@SeV+$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cf v1nU W  
*/ EyV5FWb58  
public void sort(int[] data) { &-vHb   
MaxHeap h=new MaxHeap(); YQ1rS X3  
h.init(data); %r(qQM.Pl  
for(int i=0;i h.remove(); SapVS*yx@  
System.arraycopy(h.queue,1,data,0,data.length); vZqW,GDfXo  
} cwHbm%  
au+:-Khm  
private static class MaxHeap{ ]% G#x  
Io /;+R .  
void init(int[] data){ 5RF*c,cNq  
this.queue=new int[data.length+1]; BISH34  
for(int i=0;i queue[++size]=data; U4iVI#f  
fixUp(size); je%y9*V  
} ?|Wxqo  
} 95/;II  
A=D G+z''  
private int size=0; 9'vf2) "  
vNm4xa%  
private int[] queue; +R 8dy  
m&MZn2u[4i  
public int get() { xaq/L:I<  
return queue[1]; Q:ql~qew  
} TyR@3H  
&TN.6Hm3  
public void remove() { 4dI`  
SortUtil.swap(queue,1,size--); b>} )G7b}  
fixDown(1); iQiXwEAi[  
} cA90FqUH  
file://fixdown +.u HY`A  
private void fixDown(int k) {  \5HVX/  
int j; 8SupoS  
while ((j = k << 1) <= size) { T.WN9= N  
if (j < size %26amp;%26amp; queue[j] j++; \M Av's4b@  
if (queue[k]>queue[j]) file://不用交换 BY$L[U;@T  
break; I5Rd~-="G  
SortUtil.swap(queue,j,k); )~w bu2;  
k = j; )L"J?wTe  
} _~y-?(46K  
} mF>{cVTF  
private void fixUp(int k) { |uJjO>8]|  
while (k > 1) { nbDjoZZ4  
int j = k >> 1; !Okl3 !fC  
if (queue[j]>queue[k]) ny<D1>{90  
break; h;OHpvk  
SortUtil.swap(queue,j,k); :vFYqoCn  
k = j; {Bpu-R&T  
}  Ozsvsa  
} AG G xx?I  
MJn=  
} %^u e  
^>y|{;`  
} a,xy3 8T<  
HeHo?<>|d  
SortUtil: :?)q"hE  
H[?l)nZ}  
package org.rut.util.algorithm; anH]]  
$A98h -*x  
import org.rut.util.algorithm.support.BubbleSort; k+eeVy  
import org.rut.util.algorithm.support.HeapSort; ]-OF3+l4  
import org.rut.util.algorithm.support.ImprovedMergeSort; zpcO7AY~  
import org.rut.util.algorithm.support.ImprovedQuickSort; @|d`n\%x  
import org.rut.util.algorithm.support.InsertSort; j:2*hF!E  
import org.rut.util.algorithm.support.MergeSort; 6""i<oR  
import org.rut.util.algorithm.support.QuickSort; 1[e%E#h  
import org.rut.util.algorithm.support.SelectionSort; }e>OmfxDBt  
import org.rut.util.algorithm.support.ShellSort; ,Mn`kL<F  
Ai`0Ud,M@  
/** }%3i8e  
* @author treeroot [q|8.>sB  
* @since 2006-2-2 ?{OU%usQwE  
* @version 1.0 lQ2vQz-J  
*/ Et&PzDvU  
public class SortUtil { Ol8Yf.e_  
public final static int INSERT = 1; LiEDTXRz  
public final static int BUBBLE = 2; W;F=7[h  
public final static int SELECTION = 3; CI|#,^  
public final static int SHELL = 4; @3?dI@i(  
public final static int QUICK = 5; XU`vs`/   
public final static int IMPROVED_QUICK = 6; "OrF81  
public final static int MERGE = 7; ,,h>_IA  
public final static int IMPROVED_MERGE = 8; h0-CTPQ7A  
public final static int HEAP = 9; 'pT8S  
?+byRoY>&g  
public static void sort(int[] data) { -[z1r)RZ  
sort(data, IMPROVED_QUICK); t2FA|UF  
} R]d934s  
private static String[] name={ jZ,=tF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <07~EP  
}; fTi5Ej*/?)  
$$T a  
private static Sort[] impl=new Sort[]{ tG 0 &0`  
new InsertSort(), S6{y%K2y&  
new BubbleSort(), LiJ./  
new SelectionSort(), *nHkK!d<N  
new ShellSort(), Gr~J-#a3~D  
new QuickSort(), n?v$C:jLN  
new ImprovedQuickSort(), zy8D&7Ytf  
new MergeSort(), EV R>R  
new ImprovedMergeSort(), zHXb[$ Q  
new HeapSort() A/~^4DR  
}; oK2jPP  
7fW$jiw  
public static String toString(int algorithm){ 9lqD~H.  
return name[algorithm-1]; Y>CZ  
} /)V8X#,  
w(q\75  
public static void sort(int[] data, int algorithm) { 1HeE$  
impl[algorithm-1].sort(data); JiX-t\V~  
} zoau5t  
!Ic~_7"  
public static interface Sort { p$$0**p!`  
public void sort(int[] data); t'HrI-x  
} ,'@t .XP  
PC& (1kJ  
public static void swap(int[] data, int i, int j) { jB\Knxm v  
int temp = data; :?\Je+iA  
data = data[j]; a=*JyZ.2  
data[j] = temp; KtaoU2s  
} ['aiNhlbt  
} @.h;k4TD  
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