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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。 dq1:s1  
插入排序: qFQ 8  
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package org.rut.util.algorithm.support; I zbU)ud  
COzyG.R.  
import org.rut.util.algorithm.SortUtil; YC_5YY(k  
/** OS|>t./U  
* @author treeroot '})0!g<Y  
* @since 2006-2-2 YwY74w:  
* @version 1.0 P + "Y  
*/ ^ci3F<?Q=  
public class InsertSort implements SortUtil.Sort{ Cxod[$8  
z7M_1%DEx  
/* (non-Javadoc) :'F}Dy  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Iyo9&1&  
*/ A\_|un%  
public void sort(int[] data) { mI*[>#q>  
int temp; dz [!-M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {U<xdG  
} RB* J=  
} ZQ^r`W9_ +  
} uEyH2QO  
uXDq~`S  
} P}ok*{"J<>  
mbnV[  
冒泡排序: ~c)~015`  
HHX-1+L  
package org.rut.util.algorithm.support; K{b(J Nd  
ay "'#[  
import org.rut.util.algorithm.SortUtil; X|0R= n]  
kr$ b^"Ku  
/** 8:BIbmtt5  
* @author treeroot 9% l%  
* @since 2006-2-2 Le<w R  
* @version 1.0 )o-Q!<*1  
*/ P=3RLL<l  
public class BubbleSort implements SortUtil.Sort{ [aI]y =v  
C2Xd?d  
/* (non-Javadoc)  (x^BKnZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "&+"@ <  
*/ Mu'8;9_6  
public void sort(int[] data) { ) ri}nL.  
int temp; '47P|t  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JXyM\}9-X  
if(data[j] SortUtil.swap(data,j,j-1); r$]HIvJD  
} JaB<EL-9r2  
} ?wnzTbJN  
} ~ek$C  
} v3v[[96p  
&\apwD  
} k)TSR5A  
A:7k+4  
选择排序: }Tf9S<xpq3  
^"J8r W6[  
package org.rut.util.algorithm.support; -V:"l  
;FZ@:%qDm  
import org.rut.util.algorithm.SortUtil; kOh{l: 2-+  
2h[85\4  
/** MwmUgN"g  
* @author treeroot S[7WW$lF  
* @since 2006-2-2 a33TPoj  
* @version 1.0 h6} lpd  
*/ u|4$+ QiD  
public class SelectionSort implements SortUtil.Sort { hs}8xl  
u]vQ>Uu  
/* ^h{)Gf,+\  
* (non-Javadoc) !9xp cQ>  
* XoA+MuDzpo  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ` AY_2>7  
*/ 2(/g}  
public void sort(int[] data) { T0&f8  
int temp; B/` !K  
for (int i = 0; i < data.length; i++) { It{;SKeo  
int lowIndex = i; [,TkFbDq"J  
for (int j = data.length - 1; j > i; j--) { JwJ7=P=c  
if (data[j] < data[lowIndex]) { PssMTEf  
lowIndex = j; 7EXI6jGJ|  
} )c8j}  
} otk}y8  
SortUtil.swap(data,i,lowIndex); /% kY0 LY  
} hUYd0qEbEt  
} -%L6#4m4o  
1x[)/@.'f  
} }[M`uZ  
:UQTEdc{  
Shell排序: RIIitgV_  
g55`A`5%C  
package org.rut.util.algorithm.support; h[PYP5{L  
}fKSqB]T-  
import org.rut.util.algorithm.SortUtil;  =|9H  
9'r:~ O  
/** R9B&dvG  
* @author treeroot +"1NC\<*  
* @since 2006-2-2 {l |E:>Q2  
* @version 1.0 T8^5=/  
*/ < P`u}  
public class ShellSort implements SortUtil.Sort{ 4Z/f@ZD  
YX` 7Hm,  
/* (non-Javadoc) P{u0ftyX}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '3?\K3S4i  
*/ 6H'HxB4  
public void sort(int[] data) { / z}~zO  
for(int i=data.length/2;i>2;i/=2){ Q:5KZm[[  
for(int j=0;j insertSort(data,j,i); Ox@sI:CT  
} 1bH;!J  
} D:Zy  
insertSort(data,0,1); vBog0KD);s  
} s M+WkN}{  
e6!LSx}y  
/** tzs</2 G,  
* @param data yV"ZRrjO'Z  
* @param j G_SG  
* @param i s&NX@  
*/ {uHU]6d3qy  
private void insertSort(int[] data, int start, int inc) { =KR NvW  
int temp; @WI2hHD  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &9Xhl''  
} Mb]rY>B4  
} ahPoEh  
} ?.YOI.U^  
:hM/f  
} 0C>%LJ8r  
ezMI \r6  
快速排序: =MvjLh"s  
,~"$k[M  
package org.rut.util.algorithm.support; U{VCZ*0cj  
e/^=U7:io  
import org.rut.util.algorithm.SortUtil; #es9d3 ~\  
[w -l?  
/** KjQR$-  
* @author treeroot v.]Q$q^  
* @since 2006-2-2 l \sU  
* @version 1.0 3JVK  
*/ 4 M(-xl?  
public class QuickSort implements SortUtil.Sort{ ,13Lq-  
;f"0~D2  
/* (non-Javadoc) Yboiw y,n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) PP!SK2u "L  
*/ t1%_DPD%W  
public void sort(int[] data) { qs QNjt  
quickSort(data,0,data.length-1); +Xemf?  
} OD5m9XS  
private void quickSort(int[] data,int i,int j){ DS'n  
int pivotIndex=(i+j)/2; )4&cph';  
file://swap -UD\;D?$  
SortUtil.swap(data,pivotIndex,j); qv@$ZLR  
; k)@DX  
int k=partition(data,i-1,j,data[j]); 3:C oZ  
SortUtil.swap(data,k,j); *Q,0W:~-  
if((k-i)>1) quickSort(data,i,k-1); z-b*D}&  
if((j-k)>1) quickSort(data,k+1,j); K=,F#kn  
3#TV5+x*"`  
} GxKqD;;u?=  
/** M6}3wM*4  
* @param data '60 L~`K  
* @param i K5XK%Gl"  
* @param j IhA*"  
* @return (e[}/hf6  
*/ 8:/e GM  
private int partition(int[] data, int l, int r,int pivot) { /IM#.v  
do{ ,j$Vvz   
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )'4k|@8|  
SortUtil.swap(data,l,r); #/Eb*2C`b  
} W]5USFan  
while(l SortUtil.swap(data,l,r); P<f5*L#HD  
return l; 6C+"`(u%V  
} ) lZp9O  
dx+hhg\L  
} $]/Zxd  
jb^N|zb  
改进后的快速排序: oDU ;E  
ruazOmnn~  
package org.rut.util.algorithm.support; mzf+Cu:` v  
FG) $y[*  
import org.rut.util.algorithm.SortUtil; l@ap]R  
oD$J0{K6  
/** >`%'4<I  
* @author treeroot J;f!!<l\  
* @since 2006-2-2 ,Bal  
* @version 1.0 3fh8$A  
*/ &w1P\4?G  
public class ImprovedQuickSort implements SortUtil.Sort { mljh|[  
4-[J@  
private static int MAX_STACK_SIZE=4096; I:d[Q s  
private static int THRESHOLD=10; :=[XW?L%x  
/* (non-Javadoc) n8D xB@DI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KFFSv{m[  
*/ ?IGVErnJJC  
public void sort(int[] data) { [NTtz <i@  
int[] stack=new int[MAX_STACK_SIZE]; :P(K2q3  
&Ky_v^  
int top=-1; :"!9_p(,,  
int pivot; 14"J d\M8  
int pivotIndex,l,r; ](^(=%  
Ix(><#P  
stack[++top]=0; 6O}`i>/6M  
stack[++top]=data.length-1; J|w)&bV  
_z1(y}u}  
while(top>0){ {Pc<u gfl  
int j=stack[top--]; 6l4mS~/  
int i=stack[top--]; ]| +<P-  
91xB9k1zO  
pivotIndex=(i+j)/2; qvv2O1c"A  
pivot=data[pivotIndex]; r{rQu-|.  
Uv4`6>Ix  
SortUtil.swap(data,pivotIndex,j); Qx'`PNU9\  
QQV~?iW{~  
file://partition izx#3u$P  
l=i-1; 37RLE1Yf  
r=j; iT)z_  
do{ Vb'7>  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;Yg{zhJX~  
SortUtil.swap(data,l,r); K/}rP[H  
} bpxeznz  
while(l SortUtil.swap(data,l,r); H Tz  
SortUtil.swap(data,l,j); pm9%%M$  
gB4U*D0[e~  
if((l-i)>THRESHOLD){ +a*^{l}AST  
stack[++top]=i; p+Y>F\r&w  
stack[++top]=l-1; <dvy"Dx   
} + Q6l*:<|c  
if((j-l)>THRESHOLD){ V,[d66H=N  
stack[++top]=l+1; wX*K]VMn  
stack[++top]=j; :,DM*zBV p  
} 7H|$4;X^  
5Fz.Y}  
} =lu/9 i6  
file://new InsertSort().sort(data); @_LN3zP  
insertSort(data); g=e71DXG2  
} %:2+ o'  
/** _{ZqO;[u  
* @param data PClMQL#  
*/ Zt3)]sB  
private void insertSort(int[] data) { &RTX6%'KY  
int temp; z1Ov|Q`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |eWjYGwJa  
} @ G4X  
} Q[d}J+l4{  
} c-Pw]Ju  
+L5\;  
} _Dwqy(   
ykFJ%sw3X  
归并排序: yZWoN&  
1u|Rl:Q  
package org.rut.util.algorithm.support; ZZyDG9a>7  
1NcCy! +  
import org.rut.util.algorithm.SortUtil; xrN &N_K#  
# (- Qx  
/** U5 r7j  
* @author treeroot Wy%s1iu  
* @since 2006-2-2 RAp=s  
* @version 1.0 /P 2[:[w  
*/ )<xypDQ  
public class MergeSort implements SortUtil.Sort{ i:l<C  
":nQgV\ 9  
/* (non-Javadoc) $*W6A/%O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CV{r5Sye  
*/ 1=]kWp`i  
public void sort(int[] data) { 0Ld@H)  
int[] temp=new int[data.length]; Kn?lHH*w7  
mergeSort(data,temp,0,data.length-1); -!\fpl{  
} )nd\7|5#  
SnYLdwgl  
private void mergeSort(int[] data,int[] temp,int l,int r){ G5FaYL.7  
int mid=(l+r)/2; ZKdeB3D  
if(l==r) return ; Y1arX^Zb  
mergeSort(data,temp,l,mid); nIvJrAm4k  
mergeSort(data,temp,mid+1,r); 8L1ohj  
for(int i=l;i<=r;i++){ 9Mgq1Z  
temp=data; d|iy#hy"_  
} Q*XE h  
int i1=l; q}FVzahv  
int i2=mid+1; aBzszp]l+  
for(int cur=l;cur<=r;cur++){ @+WQ ^  
if(i1==mid+1) C8L'si  
data[cur]=temp[i2++]; +L=*:e\j  
else if(i2>r) y8\S}E 0  
data[cur]=temp[i1++]; @EoZI~  
else if(temp[i1] data[cur]=temp[i1++]; )aX2jSp  
else v<9&B94z  
data[cur]=temp[i2++]; Cz8f1suO4  
} 1LY8Ma]E  
} c~o+WI Ym  
M+!x}$ &v  
} w%zRHf8C  
O MX-_\")  
改进后的归并排序: nL?oTze*p  
.{S8f#p9T  
package org.rut.util.algorithm.support; efY8M2  
1+7GUSIb  
import org.rut.util.algorithm.SortUtil; ,2]X}&{i  
O$ HBO  
/** z7-k`(l4  
* @author treeroot 2:LHy[{5  
* @since 2006-2-2 O0PJ6:9P  
* @version 1.0 m5D"A D  
*/ 9Ok9bC'?8@  
public class ImprovedMergeSort implements SortUtil.Sort { (7DXRcr<  
O6].*25  
private static final int THRESHOLD = 10; {ccIxL /~  
<A.W 8b7D  
/* 1JEnnqu  
* (non-Javadoc) wdvLx  
* "3F;cCDv]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OD=!&LM  
*/ #pHs@uvO  
public void sort(int[] data) { _U{&@}3  
int[] temp=new int[data.length]; &J!aw  
mergeSort(data,temp,0,data.length-1); 6q>+!kXh  
} [/_+>M  
HWm#t./  
private void mergeSort(int[] data, int[] temp, int l, int r) {  2Cg$,#H  
int i, j, k; 4m-I5!=O  
int mid = (l + r) / 2; 8by@iQ  
if (l == r) Y $-3v.  
return; 9,]5v +  
if ((mid - l) >= THRESHOLD) ?tg  y|  
mergeSort(data, temp, l, mid); `O6:t\d@  
else k6Cn"2q <  
insertSort(data, l, mid - l + 1); gLsU:aeCT  
if ((r - mid) > THRESHOLD) fj,m  
mergeSort(data, temp, mid + 1, r); KL'zXkS  
else <:|3rfm#  
insertSort(data, mid + 1, r - mid); {k(eNr,  
A*tKF&U5  
for (i = l; i <= mid; i++) { 2ij# H ;  
temp = data; #?B%Ja% ;W  
} N:"C+ a(  
for (j = 1; j <= r - mid; j++) { ~}DQT>7$  
temp[r - j + 1] = data[j + mid]; >`jU`bR@  
} T5O _LCIws  
int a = temp[l]; NcM>{{8  
int b = temp[r]; bY~@}gC**@  
for (i = l, j = r, k = l; k <= r; k++) { rx:z#"?I  
if (a < b) { 4Tct  
data[k] = temp[i++]; V|MY!uV  
a = temp; OJ4SbI  
} else { Wn|&cG9  
data[k] = temp[j--]; xdy^ ^3"  
b = temp[j]; smQVWs>  
} _;RVe"tR#  
} 23DJV);g8  
} s0hBbL0DH  
;o<m}bGaT  
/** Tx%VU8\?n  
* @param data gBk5wk_j|  
* @param l sn{AwF%  
* @param i  Zt E##p  
*/ vf~`eT  
private void insertSort(int[] data, int start, int len) { u2(eaP8d  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); W}'WA  
} ?nKF6 f  
} tK%c@gGU9  
} YH:8<O,{-  
} FnHi(S|A  
8X?>=tl  
堆排序: %G3sjnI;l  
xeTgV&$@  
package org.rut.util.algorithm.support; l|/:Ot  
<1~^C  
import org.rut.util.algorithm.SortUtil; %"A_!<n@*`  
[{&jr]w`|  
/** q\9d6u=Gm  
* @author treeroot I]}>|  
* @since 2006-2-2 8Og3yFx[rt  
* @version 1.0 pz doqAVI  
*/ o!&W sD  
public class HeapSort implements SortUtil.Sort{ J0220 _  
z"F*\xa  
/* (non-Javadoc) =fyyqb 4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eR!G[Cw-  
*/ @=uN\) 1  
public void sort(int[] data) { $1*3!}_0  
MaxHeap h=new MaxHeap(); gH:ArfC  
h.init(data); Wf>^bFb"$  
for(int i=0;i h.remove(); t0m*PJcF  
System.arraycopy(h.queue,1,data,0,data.length); d @rs3Q1z  
} t"s5\;IJ  
UU@fkk  
private static class MaxHeap{ 8}BBOD  
PoD^`()FR{  
void init(int[] data){ '=cKU0 G#  
this.queue=new int[data.length+1]; `EMi0hm&H  
for(int i=0;i queue[++size]=data; *i<\iMoW  
fixUp(size); S-Ai3)t6  
} 5^)_B;.f  
} %"Db?  
2'{}<9  
private int size=0; </E>tMW  
^abD !8  
private int[] queue; P -Fg^tl  
&:#m&,tQ  
public int get() { .]76!(fWZ  
return queue[1]; =ak7ld A=2  
} 9XV^z*E(J  
IjZ@U%g@;  
public void remove() { !Ua&0s%  
SortUtil.swap(queue,1,size--); 0\a8}b||  
fixDown(1); hG Apuy  
} M$&>5n7  
file://fixdown #s+X+fe  
private void fixDown(int k) { E8-53"m  
int j; YL5>V$i  
while ((j = k << 1) <= size) { y @apJ;_R-  
if (j < size %26amp;%26amp; queue[j] j++; v:d9o.h  
if (queue[k]>queue[j]) file://不用交换 if~rp-\P  
break; XT||M)#  
SortUtil.swap(queue,j,k); j Selop>N  
k = j; L0&S0HG   
} ^,7=X8Su  
} *_)E6Y?9  
private void fixUp(int k) { i7eI=f-Q  
while (k > 1) { W (& 6  
int j = k >> 1; 9 qH[o?]  
if (queue[j]>queue[k]) 3ps,uozj  
break; C{Blqf3V0  
SortUtil.swap(queue,j,k); D@vMAW  
k = j; #@_ 1fE  
} ^Rmoz1d  
} SFO&=P:U  
D<nxr~pQ  
} !A[S6-18%-  
c#\-%h  
} a c6*v49  
~Fx&)kegTo  
SortUtil: iVeQ]k(u  
="B n=>  
package org.rut.util.algorithm; .5g}rxO8  
7c::Qf[|  
import org.rut.util.algorithm.support.BubbleSort; oBw}hH,hp  
import org.rut.util.algorithm.support.HeapSort; n>llSK  
import org.rut.util.algorithm.support.ImprovedMergeSort; +"L$ed(=nJ  
import org.rut.util.algorithm.support.ImprovedQuickSort; "=A|K~b  
import org.rut.util.algorithm.support.InsertSort; B| Q6!  
import org.rut.util.algorithm.support.MergeSort; rl|Q)A{  
import org.rut.util.algorithm.support.QuickSort; ~t9Mh^gij  
import org.rut.util.algorithm.support.SelectionSort;  ? ICDIn  
import org.rut.util.algorithm.support.ShellSort; /J;]u3e|  
k!13=Gh  
/** fq Y1ggL  
* @author treeroot 3'@&c?F ye  
* @since 2006-2-2 #Wx=v$"  
* @version 1.0 nW&$~d  
*/ ylkqhs&  
public class SortUtil { d;g-3Pf  
public final static int INSERT = 1; (9z|a ,  
public final static int BUBBLE = 2;  ^Fp=y,D  
public final static int SELECTION = 3; ,o)4p\nV  
public final static int SHELL = 4; VR v02m5  
public final static int QUICK = 5; AM?Ec1S #a  
public final static int IMPROVED_QUICK = 6; 5bBCpNa  
public final static int MERGE = 7; DR{] sG  
public final static int IMPROVED_MERGE = 8; 6S_y%8Fv&[  
public final static int HEAP = 9; 0UD"^zgY  
Dqr9Vv  
public static void sort(int[] data) { 6UI>GQ  
sort(data, IMPROVED_QUICK); B"[{]GP BY  
} bm6hZA|  
private static String[] name={ <_f`$z  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" v Xf:~G]  
}; (txt8q  
i+RD]QL  
private static Sort[] impl=new Sort[]{ 'Q`C[*c  
new InsertSort(), X X&K=<,Ja  
new BubbleSort(), ux&:Rw\  
new SelectionSort(), ) MBS  
new ShellSort(), "VQ|E d  
new QuickSort(), MHNe>C-!q  
new ImprovedQuickSort(), t 2G1[j!  
new MergeSort(), u#VweXyU  
new ImprovedMergeSort(), 8GW ut=D  
new HeapSort() SW=aHM  
}; *2#FRA#q  
P#F_>GB  
public static String toString(int algorithm){ k -]xSKG  
return name[algorithm-1]; ] ?9t-  
} c 85O_J  
um}N%5GAa  
public static void sort(int[] data, int algorithm) { 4 4<v9uSK  
impl[algorithm-1].sort(data); _r7=&oL.Q  
} @e={Wy+Vm(  
uOb2npPj  
public static interface Sort { )BB%4=u@~.  
public void sort(int[] data); [>wzl"cHW  
} Pzptr%{  
W60Q3  
public static void swap(int[] data, int i, int j) { x{2o[dK4}  
int temp = data; iBS0rT_  
data = data[j]; 1>yha j(K  
data[j] = temp; taixBNv  
} x57'Cg \  
} -sx-7LKi  
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