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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。 =%> oR  
插入排序: =F;.l@:  
r!{LLc}>  
package org.rut.util.algorithm.support; /*c\qXA5  
|USX[j m\  
import org.rut.util.algorithm.SortUtil; Z"uY}P3  
/** ,Uy|5zv  
* @author treeroot ]| +<P-  
* @since 2006-2-2 ]C:l,I  
* @version 1.0 ]hbyELs  
*/ }ga@/>Sl&  
public class InsertSort implements SortUtil.Sort{ C(K; zo*S(  
8 P>#l.#  
/* (non-Javadoc) xu'yVt9RC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) DHY@akhrK  
*/ u3o#{~E/#  
public void sort(int[] data) { eEn;!RS)  
int temp; ty DM'|p  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); w/IZDMBf|  
} /-i !;!  
} +(+Itmx2&  
} $]q8, N|1  
2^^=iU=!<|  
} 4DOK4{4?5  
M_%B|S {  
冒泡排序: -@Uqz781  
&RTX6%'KY  
package org.rut.util.algorithm.support; Y X_ gb/A  
A|@_}h"WG  
import org.rut.util.algorithm.SortUtil; UDL RCS8i  
8zBWIi  
/** +L5\;  
* @author treeroot Dxk+P!!K  
* @since 2006-2-2 Zx d~c]n  
* @version 1.0 1u|Rl:Q  
*/ BY]i;GVq  
public class BubbleSort implements SortUtil.Sort{ -<_Ww\%8M  
U5 r7j  
/* (non-Javadoc) }`NU@O#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Q72;/$  
*/ JXj8Br?Z@  
public void sort(int[] data) { CV{r5Sye  
int temp; M BXBog7U  
for(int i=0;i for(int j=data.length-1;j>i;j--){ h)me\U7UC  
if(data[j] SortUtil.swap(data,j,j-1); L-9~uM3@\  
} E{2Eoj;gq  
} 0n/gd"M  
} 9Mgq1Z  
} d|iy#hy"_  
oQL59XOT4  
} 8+Td-\IMk  
{vE(l'  
选择排序: 4);)@&0Md~  
B7Tk4q\;Q  
package org.rut.util.algorithm.support; Ia'ZV7'  
Gxa x2o  
import org.rut.util.algorithm.SortUtil; wWXD\{Hk  
2+Wzf)tB  
/** ^Eo=W/   
* @author treeroot 8#&q$kE  
* @since 2006-2-2 s-ZI ^I2\  
* @version 1.0 K2<~(78C  
*/ z~\t|Z]G,|  
public class SelectionSort implements SortUtil.Sort { l)-Mq@V  
@K:N,@yq  
/* 1>Q'R  
* (non-Javadoc) A4QcQ"  
* W8g' lqc|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ei2%DMN7)  
*/ U/NBFc:[y:  
public void sort(int[] data) { I_q~*/<h  
int temp; ')N{wSM9Ft  
for (int i = 0; i < data.length; i++) { A$WZF/x  
int lowIndex = i; Bu]t*$  
for (int j = data.length - 1; j > i; j--) { LA[g(i 7  
if (data[j] < data[lowIndex]) { jp+_@S>  
lowIndex = j; d HJhFw  
} 9*:gr#(5  
} wIf {6z{  
SortUtil.swap(data,i,lowIndex); Oi} T2I  
} nP UqMn'  
} ="d*E/##  
s[Ur~Wvn  
} 1J? dK|% b  
"EV!>^Z  
Shell排序: mw^7oO#  
qSx(X!YS  
package org.rut.util.algorithm.support; |/ }\6L]  
y3<Y?M4  
import org.rut.util.algorithm.SortUtil; a83g\c5   
<*EZ@XoN>  
/** n$(p-po  
* @author treeroot |*mL1#bB  
* @since 2006-2-2 Xes|[*Y!V  
* @version 1.0 |7@O( $b  
*/ -xD*tf*  
public class ShellSort implements SortUtil.Sort{ aV1lJ ;0  
%/.a]j!  
/* (non-Javadoc) ,pBh`av  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T$= 4O9G  
*/ 90xk$3(  
public void sort(int[] data) { BN,>&1I  
for(int i=data.length/2;i>2;i/=2){ 0W^dhYO  
for(int j=0;j insertSort(data,j,i); {k(eNr,  
} q:8_]Qt  
} voe7l+Xk  
insertSort(data,0,1); 3CE[(   
} ueG|*[  
ir3VTqz  
/** x&A vUJ  
* @param data +!0eu>~_&  
* @param j S|B$c E  
* @param i 6> {r6ixs1  
*/ V#q}Wysft  
private void insertSort(int[] data, int start, int inc) { 4Tct  
int temp; l?*r5[O>n  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZlKw_Sq:  
} W9zE{)Sc~  
} W@\ (nfD2  
} MK}-<&v  
m?[5J)eR  
} H0"=Vs,n  
"gW7<ilw  
快速排序: Qju`e Eo  
V^il$'  
package org.rut.util.algorithm.support; -p-0;Hy  
3_5XHOdE  
import org.rut.util.algorithm.SortUtil; W0cgI9=9  
Bf4%G,o5  
/** a1N!mQ^  
* @author treeroot Wd(86idnc  
* @since 2006-2-2 AAUyy :  
* @version 1.0 efz&@|KR  
*/ _w ]4~V9  
public class QuickSort implements SortUtil.Sort{ YH:8<O,{-  
FnHi(S|A  
/* (non-Javadoc) $A<ESfrs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AK u_~bTk  
*/ )fU(AXSP  
public void sort(int[] data) { &GWkq>  
quickSort(data,0,data.length-1); 'b"TH^\  
} P(omfD4  
private void quickSort(int[] data,int i,int j){ `xKFqx:e  
int pivotIndex=(i+j)/2; _2vd`k  
file://swap IJU0[EA]F  
SortUtil.swap(data,pivotIndex,j); `&$B3)Eb  
l)+:4N?iVv  
int k=partition(data,i-1,j,data[j]); .>6 Wv0  
SortUtil.swap(data,k,j); Z$KV&.=+  
if((k-i)>1) quickSort(data,i,k-1); F:37MUQi  
if((j-k)>1) quickSort(data,k+1,j); 2)/NFZ  
bb=uF1  
} F#+.>!  
/** Ey&aB YR  
* @param data 84&XW  
* @param i ~y0R'oi  
* @param j Wf>^bFb"$  
* @return t0m*PJcF  
*/ x|~zHFm6  
private int partition(int[] data, int l, int r,int pivot) { $GF]/;\m  
do{ RHNk%9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); #%S0PL"x U  
SortUtil.swap(data,l,r); $;D* n'8Fx  
} .gYt0raSY  
while(l SortUtil.swap(data,l,r); '5H4z7)  
return l; K3p@$3hQ  
} #2%([w  
M2T|"Q"=  
} Lu>H`B7Q"  
nwM)K  
改进后的快速排序: 0-2"FdeQU  
b7h+?!H]R  
package org.rut.util.algorithm.support; @C.GKeM*  
Nw](".  
import org.rut.util.algorithm.SortUtil; C9KWa*3  
&$ p[  
/** =3ADT$YHd  
* @author treeroot AZZRa69=  
* @since 2006-2-2 PJ 9%/Nrh  
* @version 1.0 E20 :uZ7\  
*/ %AR^+*Nu  
public class ImprovedQuickSort implements SortUtil.Sort { %%g-GyP 1  
{K7YTLWY  
private static int MAX_STACK_SIZE=4096; ^b53}f8H  
private static int THRESHOLD=10; xFsmf<Vm  
/* (non-Javadoc) .RRlUWu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [!?wyv3  
*/ T{S4|G1R6  
public void sort(int[] data) { VO`"<  
int[] stack=new int[MAX_STACK_SIZE]; bsO@2NP'  
L0&S0HG   
int top=-1; ^,7=X8Su  
int pivot; YBSl-G'  
int pivotIndex,l,r; d\Jji 6W  
(@ ]tG?I=  
stack[++top]=0; H=. K  
stack[++top]=data.length-1; +8^_D?*\n  
^g!B.ll`  
while(top>0){ A4_>LO_qL  
int j=stack[top--]; :)P<jX-G  
int i=stack[top--]; &(O06QL  
kfj%  
pivotIndex=(i+j)/2; `fW{yb  
pivot=data[pivotIndex]; _+zVpZ  
1!/-)1t  
SortUtil.swap(data,pivotIndex,j); If.n(t[M9  
|%ZpatZA5  
file://partition eF1.VLI  
l=i-1; yDtOpM8<{  
r=j; $pFk"]=  
do{ exphe+b  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Kpg:yrc['  
SortUtil.swap(data,l,r); QHQj/)J8  
} %3,xaVN  
while(l SortUtil.swap(data,l,r); ?~)Ak`=  
SortUtil.swap(data,l,j); $^Ca: duk  
V} bM!5 H  
if((l-i)>THRESHOLD){ R=35 7^[R  
stack[++top]=i; %N{sD[^  
stack[++top]=l-1; |s`Kd-'|q  
} ?L`ZKRD  
if((j-l)>THRESHOLD){ ~ hD{coVTI  
stack[++top]=l+1; C ktX0  
stack[++top]=j; l10-XU02  
} *g$agyOfh  
lO&cCV;  
} BE%Z\E[[m  
file://new InsertSort().sort(data); '49L(>.  
insertSort(data); X>/K/M  
} 46dc.Yi  
/** L<)Z>@fR  
* @param data 0P9Wy!f7  
*/ "/y|VTV"  
private void insertSort(int[] data) { AM?Ec1S #a  
int temp; 5bBCpNa  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); MOLO3?H(  
} ji##$xC  
} !Mil?^  
} _m7c o :  
{]M>Y%j48  
} )G4rJ~#@  
;KS`,<^-  
归并排序: ZeTL$E[E}  
FF@`+T  
package org.rut.util.algorithm.support; (j=DD6fC  
cUC17z2D  
import org.rut.util.algorithm.SortUtil; O#PwRud$  
^^ j/  
/** _3U|2(E  
* @author treeroot l4Y1(  
* @since 2006-2-2 >p |yf. G  
* @version 1.0 xSOoIsL[  
*/ MHNe>C-!q  
public class MergeSort implements SortUtil.Sort{ t 2G1[j!  
u#VweXyU  
/* (non-Javadoc) Z^+a*^w~{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D1! {S7  
*/ K#;txzi  
public void sort(int[] data) { )"-fHW+fy  
int[] temp=new int[data.length]; `uhL61cMp  
mergeSort(data,temp,0,data.length-1); r\bq[9dX>  
} :f]!O@.~  
7%YYr^d  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9;pzzZ  
int mid=(l+r)/2; <THUsY`3P&  
if(l==r) return ; xiJz`KD&  
mergeSort(data,temp,l,mid); V^ Y*xZ  
mergeSort(data,temp,mid+1,r); [>wzl"cHW  
for(int i=l;i<=r;i++){ Pzptr%{  
temp=data; W60Q3  
} cb4b, Ri  
int i1=l; 1{7_ `[  
int i2=mid+1; F_ _H(}d  
for(int cur=l;cur<=r;cur++){ mf~Lzp  
if(i1==mid+1) x57'Cg \  
data[cur]=temp[i2++]; -sx-7LKi  
else if(i2>r) VlV)$z_  
data[cur]=temp[i1++]; < %/:w/  
else if(temp[i1] data[cur]=temp[i1++]; tPzM7 n|  
else bCt_y R  
data[cur]=temp[i2++]; 6yp+h  
} W'd/dKU x  
} oX#9RW/ >I  
-P*xyI  
} -D;lS 6  
jvWI_Fto  
改进后的归并排序: 7Qt2gf  
/Q]:Uf.J  
package org.rut.util.algorithm.support; jPj 2  
KKV)DExv?  
import org.rut.util.algorithm.SortUtil; 7_1W:-A7W  
B'!PJj  
/** =s6E/K  
* @author treeroot fls#LcI9>6  
* @since 2006-2-2 xV?*!m$V%R  
* @version 1.0 z6Fun  
*/ yX3PUO9  
public class ImprovedMergeSort implements SortUtil.Sort { phe"JNML  
"zXGp7Q'#  
private static final int THRESHOLD = 10; Ys)+9yPPn  
m^5s >hUl  
/* /AoVl'R  
* (non-Javadoc) |zT%$  
* *WD;C0?z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,v|CombIc.  
*/ DqRLx85d1  
public void sort(int[] data) { /!:L7@BZ  
int[] temp=new int[data.length]; 6/VNuQ_#  
mergeSort(data,temp,0,data.length-1); kRQ~hRT6  
} xa' nJ"f;  
;Sy/N||  
private void mergeSort(int[] data, int[] temp, int l, int r) { S]vW&r3`  
int i, j, k; 6xyY+  
int mid = (l + r) / 2; FBYll[8  
if (l == r) )K8P+zn~  
return; dEL3?-;'  
if ((mid - l) >= THRESHOLD) }FHw" {my  
mergeSort(data, temp, l, mid); F ZM2   
else l&vm[3  
insertSort(data, l, mid - l + 1); K* 0 aXr?  
if ((r - mid) > THRESHOLD) u0wn=Dg  
mergeSort(data, temp, mid + 1, r); S3b|wUf  
else u mqLKf=x!  
insertSort(data, mid + 1, r - mid); o; 6fvn  
~v^%ze  
for (i = l; i <= mid; i++) { Ri9Kr  
temp = data; id3)6}  
} 56"#Syj  
for (j = 1; j <= r - mid; j++) { /*AJ+K._  
temp[r - j + 1] = data[j + mid]; -*rHB&e  
} b{zAJ`|#[n  
int a = temp[l]; -3u@hp_  
int b = temp[r]; ]Jja  
for (i = l, j = r, k = l; k <= r; k++) { vU?b"n  
if (a < b) { GJ.kkTMT  
data[k] = temp[i++]; OiYNH~hv  
a = temp; P\Ai|"=&]  
} else { ~6\& y  
data[k] = temp[j--]; Fecx';_1`  
b = temp[j]; mx:J>SPA8  
} 8e]z6:}'E  
} 0Z@ARMCe|m  
} E"G:K`Q  
xX[?L9RGz  
/** <Z2(qZ^Z  
* @param data 1 ,#{X3  
* @param l jB5>y&+  
* @param i I93 ~8wQ  
*/ W^5<XX,ON  
private void insertSort(int[] data, int start, int len) { @^'G&%j  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &G0l&8pa  
} _)OA$  
} 3Gc ,I:\  
} $o/0A  
} ~gSwxGT7d  
'bZMh9|  
堆排序: YgO aZqN  
YtV |e|aD  
package org.rut.util.algorithm.support; fG X1y  
\Oi5=,  
import org.rut.util.algorithm.SortUtil; 1M7\:te*  
e} sc]MTM  
/** ox!|)^`$_  
* @author treeroot 0@II &  
* @since 2006-2-2 yjGGqz$  
* @version 1.0  %zA2%cq<  
*/ A/ 7r:yO  
public class HeapSort implements SortUtil.Sort{ gJ<@;O8zu0  
fBHkLRFH  
/* (non-Javadoc) = 4BLc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 73&]En  
*/ $ /}:P  
public void sort(int[] data) { 8#X?k/mzU  
MaxHeap h=new MaxHeap(); Qw3a"k-  
h.init(data); V}vl2o  
for(int i=0;i h.remove(); k7:GS,7  
System.arraycopy(h.queue,1,data,0,data.length); &&]"Y!r -  
} =-OCM*5~S  
,ma Aw}=  
private static class MaxHeap{ "[%;B0J  
ZAI1p+  
void init(int[] data){ 2neF<H?^o  
this.queue=new int[data.length+1]; >P<k[vF  
for(int i=0;i queue[++size]=data; Ymwx (Pm  
fixUp(size); Sf+(1_^`t  
} zF[3%qZE:T  
} 4]Un=?)I  
Paae-EmC  
private int size=0; )ZS:gD  
K*([9VZ  
private int[] queue; _7-"Vo X  
;J,,f1Vw  
public int get() { g_rA_~dh  
return queue[1]; e8~62O^  
} 1?/5A|?V4+  
30sC4}   
public void remove() { fK)ZJ_?w,@  
SortUtil.swap(queue,1,size--); y8<lp+  
fixDown(1); c,6<7  
} sh',"S#=@  
file://fixdown &LCUoTzj  
private void fixDown(int k) { 2 ||KP|5@  
int j; R-g>W  
while ((j = k << 1) <= size) { M!xm1-,[  
if (j < size %26amp;%26amp; queue[j] j++; DiZ!c "$  
if (queue[k]>queue[j]) file://不用交换 7i-W*Mb:  
break; <Z\MZ&{k{*  
SortUtil.swap(queue,j,k); gE-w]/1zD5  
k = j; [JX}1%NA  
} M9uH&CD6U  
} H$k![K6Uj  
private void fixUp(int k) { ?=/}Ft  
while (k > 1) { zPX=MfF  
int j = k >> 1; @&~OB/7B:  
if (queue[j]>queue[k]) k#8S`W8^  
break; j6&zRFX  
SortUtil.swap(queue,j,k); G/LXUhuif  
k = j; hO+O0=$}wN  
} -(4E  
} MFc=B`/X  
!7O=<  
} yS:IRI.  
J[<D/WIH  
} ;55tf l  
sx;V,"Y  
SortUtil: vWnHC  
vOvxQS}dBp  
package org.rut.util.algorithm; &J5-'{U|0  
u7WTSL%  
import org.rut.util.algorithm.support.BubbleSort; HKEop  
import org.rut.util.algorithm.support.HeapSort; !#@4xeBPo  
import org.rut.util.algorithm.support.ImprovedMergeSort; Xa?6#  
import org.rut.util.algorithm.support.ImprovedQuickSort; )+jK0E1  
import org.rut.util.algorithm.support.InsertSort; g9FVb7In_  
import org.rut.util.algorithm.support.MergeSort; Ov~S2?E8  
import org.rut.util.algorithm.support.QuickSort; 5CH-:|(;=  
import org.rut.util.algorithm.support.SelectionSort; S`GXiwk  
import org.rut.util.algorithm.support.ShellSort; C$AIP\j- )  
(!XYH@Mz<w  
/** "lv:hz  
* @author treeroot 1OiZNuI:E  
* @since 2006-2-2 J^s<x#C  
* @version 1.0 M f%^\g.}  
*/ .(MbP  
public class SortUtil { i#M a -0#  
public final static int INSERT = 1; gJcXdv=]2  
public final static int BUBBLE = 2; {E3<GeHw4  
public final static int SELECTION = 3; {.' ,%)  
public final static int SHELL = 4; ,<^tsCI  
public final static int QUICK = 5; 4t%:O4 3e  
public final static int IMPROVED_QUICK = 6; t]u(jX)  
public final static int MERGE = 7; 7tf81*e  
public final static int IMPROVED_MERGE = 8; T;4gcJPn"M  
public final static int HEAP = 9; Sob $j  
= h<? /Krs  
public static void sort(int[] data) { Zgy2Pot  
sort(data, IMPROVED_QUICK); .qb_/#Bas  
} e~>p.l  
private static String[] name={ |`)V^e_  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %/6e"o  
}; xnhDW7m  
}(g+:]p-  
private static Sort[] impl=new Sort[]{ i)ES;b4  
new InsertSort(), HYI1 o/}  
new BubbleSort(), 764}yV>  
new SelectionSort(),  f>wW}-  
new ShellSort(), Il&"=LooZ  
new QuickSort(), S}v{^vR  
new ImprovedQuickSort(), l_YdIUl  
new MergeSort(), ?*z( 1!  
new ImprovedMergeSort(), 02J6Pn3  
new HeapSort() .J1Hg  
}; H(%] Os  
_ \v@9Q\  
public static String toString(int algorithm){ y-)+I<M  
return name[algorithm-1]; a' >$88tl  
} +EiUAs~H  
[:R P9r}  
public static void sort(int[] data, int algorithm) { ]UCk_zWsn1  
impl[algorithm-1].sort(data); _#^A:a^e8  
} R.2KYhp ,  
rmg";(I  
public static interface Sort { ?{.b9`  
public void sort(int[] data); 8x^H<y=O  
} mtWx ?x  
zfr(dQ  
public static void swap(int[] data, int i, int j) { Y;> p)'z  
int temp = data; g]@R'2:1  
data = data[j]; Cs1%g  
data[j] = temp; Nz>E#.++  
} iM\ Z J6  
} Y9H *S*n  
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