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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。 I@B7uFj  
插入排序: Ob6vg^#  
3m^BYr*y^  
package org.rut.util.algorithm.support; 'ZDclz9}  
_`\INZe-G  
import org.rut.util.algorithm.SortUtil; C+mU_g>  
/** f0F$*"#G  
* @author treeroot kmS8>O  
* @since 2006-2-2 )eFK@goGeb  
* @version 1.0 eOb`uyi  
*/ 7-dwr?j7  
public class InsertSort implements SortUtil.Sort{ M Q6Y^,B  
U!5@$Fu  
/* (non-Javadoc) anvj{1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xI@~Ig  
*/ d.Z]R&X08  
public void sort(int[] data) { r~TT c)2  
int temp; MXy{]o_H~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); aI<~+]  
} oxzNV&D[{`  
} 7I|%GA_  
} gU?)  
*t_&im%E  
} =6sXZ"_Tw  
s :ruCS  
冒泡排序: J-}NFWR;t  
~g{,W  
package org.rut.util.algorithm.support; )=D&NO67Pq  
b>i=",i\  
import org.rut.util.algorithm.SortUtil; nqBu C  
/\#5\dHj  
/** 8syo_sC |  
* @author treeroot @K9T )p]  
* @since 2006-2-2 No7Q,p  
* @version 1.0 +6=!ve}  
*/ I?K0bs+6  
public class BubbleSort implements SortUtil.Sort{ cGp^;> ]M  
 q0~_D8e,  
/* (non-Javadoc) p{rS -`I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xeI{i{8  
*/ "YL-!P  
public void sort(int[] data) { :3B\,inJ  
int temp; a5-\=0L~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ my1kF%?  
if(data[j] SortUtil.swap(data,j,j-1); k@L~h{`Mc\  
} $<v_Vm?6d  
} K288&D|1WU  
} :~(im_r  
} !A!\S/x4  
R%%`wmG)"  
} h uJqqC  
CC\z_C*P-p  
选择排序: R*X2Z{n  
+HX'AC  
package org.rut.util.algorithm.support; +]-KzDsr"V  
lIz_0rE  
import org.rut.util.algorithm.SortUtil; ))`Zv=y"  
9^u?v`!  
/** qN@a<row&~  
* @author treeroot o!~bR  
* @since 2006-2-2 !)O$Q}'\  
* @version 1.0 >|?T|  
*/ [R4x[36Zp  
public class SelectionSort implements SortUtil.Sort { Wv"tAseu  
kre&J  
/* $1+K}tP  
* (non-Javadoc) 5F"?]'*/  
* Z+"&{g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N^+ww]f?  
*/ ^>Y%L(>  
public void sort(int[] data) { &r%*_pX  
int temp; ^{:jY, ?]  
for (int i = 0; i < data.length; i++) { iIE(zw)H  
int lowIndex = i; <^U(ya  
for (int j = data.length - 1; j > i; j--) { -`OR6jd  
if (data[j] < data[lowIndex]) { v=tj.Vg  
lowIndex = j; U[b;#Y1X  
} _m],(J=,z  
} )\-";?sYky  
SortUtil.swap(data,i,lowIndex); (L$~ zw5gr  
} |8 bO5l:  
} {ah=i8$  
* Xoscc  
} Wq(l :W'  
R`2A-c  
Shell排序: L]d@D0.Z  
N;'HR)  
package org.rut.util.algorithm.support; s.`d<(X?  
T3./V0]\I  
import org.rut.util.algorithm.SortUtil; 8[)]3K x  
6#M0AG  
/** -vHr1I<  
* @author treeroot aMQjoamz  
* @since 2006-2-2 A Vm{#^p[(  
* @version 1.0 N?;o_^C  
*/ `mjx4Lb  
public class ShellSort implements SortUtil.Sort{ 7[g;|(G0  
rxj@NwAno  
/* (non-Javadoc) ).C!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wk\@n+Q {]  
*/ ^Pd3 7&B4V  
public void sort(int[] data) { T[-c|  
for(int i=data.length/2;i>2;i/=2){ GQ2PmnV +  
for(int j=0;j insertSort(data,j,i); @b\ S.  
} .vS6_  
} 1?|6odc  
insertSort(data,0,1); b$O_L4CP  
} vt@Us\fI  
`t0f L\T  
/** j yRSEk$  
* @param data =nx:GT3&[  
* @param j -'[(Uzj  
* @param i [!@oRK=~  
*/ :z.Y$]F@  
private void insertSort(int[] data, int start, int inc) { drKjLo[y  
int temp; M J,ZXJXs  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ceZ8} Sh  
} K3:|Tc(  
} T_?nd T2  
} QZ3(u<f  
HDVl5X`j'  
} hNnX-^J<o  
pP* ~ =?  
快速排序: rA1r#ksQ  
u=;nU(]M '  
package org.rut.util.algorithm.support; !?o$-+a|  
^YR|WKY  
import org.rut.util.algorithm.SortUtil; X@qk>/  
7sc<dM  
/** R pI<]1  
* @author treeroot ncattp   
* @since 2006-2-2 /%YiZ#  
* @version 1.0 E0 eQ9BXh  
*/ ZBmXaP[9  
public class QuickSort implements SortUtil.Sort{ s!ZW'`4!z  
z8/xGQn  
/* (non-Javadoc) wB>S\~i  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <*"pra{3  
*/ OR\DTLIl  
public void sort(int[] data) { K- I\P6R`  
quickSort(data,0,data.length-1); D!}K)T1~R  
} x}&a{;  
private void quickSort(int[] data,int i,int j){ ]hE +$sKd  
int pivotIndex=(i+j)/2; oU0 h3  
file://swap 6I>5~?#  
SortUtil.swap(data,pivotIndex,j); ;DD>k bd  
Q_aqX(ig  
int k=partition(data,i-1,j,data[j]); ~sU?"V  
SortUtil.swap(data,k,j); ) p<fL  
if((k-i)>1) quickSort(data,i,k-1); AB"1(PbG  
if((j-k)>1) quickSort(data,k+1,j); ZSPgci  
?,:#8.9  
} NdsX*o@a  
/** ?orhJS  
* @param data vZE|Z[M+<  
* @param i 9G#8 %[W  
* @param j |vfujzRZ  
* @return +z|UpI  
*/ ~J1;tZS  
private int partition(int[] data, int l, int r,int pivot) { r|^lt7\  
do{ N(:nF5>_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); H 5U x.]y  
SortUtil.swap(data,l,r); .vN%UNu  
} 2K]IlsMO&  
while(l SortUtil.swap(data,l,r); >AQ) x  
return l; (@ fa~?v>@  
} @1v3-n=  
e)HhnN@  
} 1iJ0Hut}d  
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改进后的快速排序: dXiE.Si  
hG3m7ht  
package org.rut.util.algorithm.support; ^E$(1><-a  
sK@Y!oF}\  
import org.rut.util.algorithm.SortUtil; _k_>aG23  
rToaGQh  
/** Yz=h"Zr  
* @author treeroot 4YDT%_h0  
* @since 2006-2-2 JG@L5f  
* @version 1.0 Rkpr8MS  
*/ 9jO`gWxV8*  
public class ImprovedQuickSort implements SortUtil.Sort { &_9YLXtMi;  
4[TS4p  
private static int MAX_STACK_SIZE=4096; VyecTU"W  
private static int THRESHOLD=10; djsz!$  
/* (non-Javadoc) K/vxzHSl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q`S iV  
*/ V(;55ycr  
public void sort(int[] data) {  ofMu3$Q  
int[] stack=new int[MAX_STACK_SIZE]; qGnPnQc  
By?nd)  
int top=-1; -RG8<bI,  
int pivot; P>*Fj4 Z~  
int pivotIndex,l,r; 5^i.;>(b  
s, n^  
stack[++top]=0; EkJVFHfh  
stack[++top]=data.length-1; *wC\w  
/"""z=q  
while(top>0){ 2J;kD2"!  
int j=stack[top--]; tYs8)\{  
int i=stack[top--]; onnI !  
t_jyyHxoZ:  
pivotIndex=(i+j)/2; & u$(NbK  
pivot=data[pivotIndex]; vG]GQ#  
x37/cu  
SortUtil.swap(data,pivotIndex,j); J| SwQE~  
6OL41g'  
file://partition lSH ZV Fd  
l=i-1; (U|)xA]y!  
r=j; XC|*A$x,  
do{ )v%l0_z{  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); z,pNb%*O  
SortUtil.swap(data,l,r); -#LjI.  
} CO-Iar  
while(l SortUtil.swap(data,l,r); /8xH$n&xoC  
SortUtil.swap(data,l,j); N'I(P9@  
9p <:=T  
if((l-i)>THRESHOLD){ [34zh="o  
stack[++top]=i; 1ZT^)/G  
stack[++top]=l-1; Wrmgu}q  
} 3A-*vaySV  
if((j-l)>THRESHOLD){ >M?H79fF2s  
stack[++top]=l+1; !|:RcH[  
stack[++top]=j; $hh+0hs  
} Ri|k<io  
!*&4< _  
} 807al^s x  
file://new InsertSort().sort(data); bqSMDK  
insertSort(data); JXH",""bq  
} glv ;C/l  
/** }@d>,1DU  
* @param data pe|X@o  
*/ 'gCJ[ce  
private void insertSort(int[] data) { l+%Fl=Q2em  
int temp; 4~!Eje!  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >Q; g0\I_  
} O?CdAnhQc`  
} :^ n*V6.4  
} YWEYHr;%^?  
lM>.@:  
} :-z&Y492  
rwy+~  
归并排序: H4t)+(:D'  
/vHYM S  
package org.rut.util.algorithm.support; d$pYo)8o({  
dUIqDl  
import org.rut.util.algorithm.SortUtil; 8qn 9|  
xcst<=  
/** Us'Cs+5XcG  
* @author treeroot  KyTuF   
* @since 2006-2-2 iHPUmTus--  
* @version 1.0 wfE^Sb3  
*/ 7%e1cI  
public class MergeSort implements SortUtil.Sort{ nE_Cuc>K\  
oz LH]*  
/* (non-Javadoc) eNtf#Rqym  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FC{})|yh }  
*/ e,(a6X  
public void sort(int[] data) { t<Ot|Ex  
int[] temp=new int[data.length]; Mm5c8[   
mergeSort(data,temp,0,data.length-1); )i;un.  
} +p9- .YM  
I_ONbJ9]  
private void mergeSort(int[] data,int[] temp,int l,int r){ 7'z(~3D  
int mid=(l+r)/2; P>(&glr|  
if(l==r) return ; ;`DD}j`  
mergeSort(data,temp,l,mid); Xh?4mKgu  
mergeSort(data,temp,mid+1,r); 0LdJZP  
for(int i=l;i<=r;i++){ yNBv-oe5  
temp=data; <:">mV+/  
} e!GZSk   
int i1=l; K*1.'9/  
int i2=mid+1; 6ZcXS  
for(int cur=l;cur<=r;cur++){ oe9lF*$/  
if(i1==mid+1) Hfh!l2P  
data[cur]=temp[i2++]; fN@{y+6  
else if(i2>r) [ 7g><  
data[cur]=temp[i1++]; >%u@R3PH]  
else if(temp[i1] data[cur]=temp[i1++]; AotCX7T2T  
else 6#U^< `  
data[cur]=temp[i2++]; /'ZKST4  
} ZWS2q4/S  
} 802H$P^ps  
_g~2R#2Q  
} :|rPT)yT]  
)n>+m|IqY(  
改进后的归并排序: cMaOM}mS  
7\Co`J>p2  
package org.rut.util.algorithm.support; M*w'1fT  
Jd_;@(Eg=  
import org.rut.util.algorithm.SortUtil; U6<M/>RG$  
Huc|6~X  
/** &kzj?xK=(j  
* @author treeroot A (okv  
* @since 2006-2-2 -\4zwIH  
* @version 1.0 Br!9x {q*  
*/ #Y2i*:<  
public class ImprovedMergeSort implements SortUtil.Sort { H]&gW/=  
Or8kp/d  
private static final int THRESHOLD = 10; E$A3|rjnoN  
22&;jpL'?  
/* $5NKFJc  
* (non-Javadoc) py @( <  
* l(!/Q|Q|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <F(><Xw,-4  
*/ ! \sMR  
public void sort(int[] data) { wksl0:BL  
int[] temp=new int[data.length]; ^`XCT  
mergeSort(data,temp,0,data.length-1); 19W:-Om  
}  lq>AGw  
-R b{^/  
private void mergeSort(int[] data, int[] temp, int l, int r) { _[t8rl  
int i, j, k; ?T!)X)A#  
int mid = (l + r) / 2; "hQgLG  
if (l == r) jo9gCP.  
return; +.kfU)6@  
if ((mid - l) >= THRESHOLD) aJzLrX  
mergeSort(data, temp, l, mid); 3TS_-l  
else XKS8K4"  
insertSort(data, l, mid - l + 1); 2' ] KTHm  
if ((r - mid) > THRESHOLD) <CZgQ\Mt  
mergeSort(data, temp, mid + 1, r); |gx ~ gG<  
else u5+|Su  
insertSort(data, mid + 1, r - mid); w!&~??&=}  
QI_4*  
for (i = l; i <= mid; i++) { iOCqE 5d3  
temp = data; ]PR#W_&q  
} vUesV%9hq  
for (j = 1; j <= r - mid; j++) { _las;S'oa  
temp[r - j + 1] = data[j + mid]; H43MoC  
} }Wh6zT)  
int a = temp[l]; ,R2U`EO;  
int b = temp[r]; LT VF8-v  
for (i = l, j = r, k = l; k <= r; k++) { b~w=v_[(I  
if (a < b) { mbxbEqz  
data[k] = temp[i++]; }D;WN@],  
a = temp; (V?:]  
} else { z~{&}Em ~  
data[k] = temp[j--]; =Vw 5q},3  
b = temp[j]; 69G`2_eKCp  
} oD.r `]k  
} `$TRleSi  
} )Xtn k  
-7{ $ Vj  
/** Ub amB+QT  
* @param data &JP-O60  
* @param l 5Qh?>n>*  
* @param i }`\/f  
*/ eOI (6U!  
private void insertSort(int[] data, int start, int len) { `5~3G2T  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); rsXq- Pq*  
} p B;3bc  
} 5d\q-d  
} !?!C'-ps  
} )B$;Vs] @i  
= ieag7!  
堆排序: >e,mg8u6$  
$I9qgDJ)  
package org.rut.util.algorithm.support; &--ej|n  
)#iq4@)|g  
import org.rut.util.algorithm.SortUtil; UVQ7L9%?f  
cyM-)r@YQV  
/** jMNU ?m:  
* @author treeroot [7FItlF%I  
* @since 2006-2-2  ._O  
* @version 1.0 ACq7dLys,B  
*/ L+}n@B  
public class HeapSort implements SortUtil.Sort{ Iw<i@=V  
tptN6Isuh  
/* (non-Javadoc) ({WyDu&=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A:l@_*C..  
*/ H<EQu|f&x  
public void sort(int[] data) { k%]=!5F  
MaxHeap h=new MaxHeap(); GL{57  
h.init(data); 9ZXlR?GA  
for(int i=0;i h.remove(); uocHa5J  
System.arraycopy(h.queue,1,data,0,data.length); }a AH  
} ig}A9j?]  
NKb1LbnZ*y  
private static class MaxHeap{ \*f;Xaa  
e [_m< e  
void init(int[] data){ qMt++*Ls  
this.queue=new int[data.length+1]; R:Q0=PzDi#  
for(int i=0;i queue[++size]=data; YH&bD16c3  
fixUp(size); 9o*,P,j'}  
} 6(d}W2GP  
}  ,Uhb  
>9e(.6&2XZ  
private int size=0; G6@M&u5RT  
@f]{>OS  
private int[] queue; A+J*e  
_BdE< !r  
public int get() { kHw_ S-  
return queue[1]; Bw%Qbs0Q  
} +5VLw  
QTX8 L  
public void remove() { yeDsJ/L  
SortUtil.swap(queue,1,size--); LI2&&Mw  
fixDown(1); JM1R ;i6  
} D%6;^^WyUx  
file://fixdown s*U1  
private void fixDown(int k) { RN e^; B  
int j; %rv7Jy   
while ((j = k << 1) <= size) { BBev<  
if (j < size %26amp;%26amp; queue[j] j++; }R{ts  
if (queue[k]>queue[j]) file://不用交换 aJ>65RJ^=  
break; S Em Q@1  
SortUtil.swap(queue,j,k); h%uZYsK  
k = j; ye,>A.  
} ):[7E(F=  
} :0Rx#%u}#  
private void fixUp(int k) { uo@n(>}EL  
while (k > 1) { G U( _  
int j = k >> 1; md"!33 @  
if (queue[j]>queue[k]) lIW }EM  
break; Q|#W#LV,K  
SortUtil.swap(queue,j,k); K/|Z$4S  
k = j;  ']2E {V  
} e?8HgiP-  
} 6G[4rD&  
hHV";bk  
} Z$/xy"  
n(;|q&3  
} \1^^\G>H5  
w5Y04J  
SortUtil: qVH1}9_  
5kCUaPu  
package org.rut.util.algorithm; xc=b |:A  
Uq^#riq  
import org.rut.util.algorithm.support.BubbleSort; A#EDk U,  
import org.rut.util.algorithm.support.HeapSort; W3MJr&p  
import org.rut.util.algorithm.support.ImprovedMergeSort; JB<Sl4  
import org.rut.util.algorithm.support.ImprovedQuickSort; (|klSz_4LM  
import org.rut.util.algorithm.support.InsertSort; VY |_d k  
import org.rut.util.algorithm.support.MergeSort; 1v.c 6~  
import org.rut.util.algorithm.support.QuickSort; Ya3C#=  
import org.rut.util.algorithm.support.SelectionSort; f4 P8Oz  
import org.rut.util.algorithm.support.ShellSort; dfKF%27  
RtTJ5@V(  
/** QdF5Cwf4  
* @author treeroot "s0)rqf<  
* @since 2006-2-2 4|riKo)  
* @version 1.0 -GhP9; d  
*/ J?? -j  
public class SortUtil { tn(JC%?^  
public final static int INSERT = 1; }wr{W:j  
public final static int BUBBLE = 2; a{^m-fSaR"  
public final static int SELECTION = 3; <D<4BnZ(  
public final static int SHELL = 4; m$}R%  
public final static int QUICK = 5; 7}f}$1   
public final static int IMPROVED_QUICK = 6; v$7QIl_/7  
public final static int MERGE = 7; de.&`lPRf  
public final static int IMPROVED_MERGE = 8; Ugu[|,  
public final static int HEAP = 9; uki#/GzaO  
$HHs^tW  
public static void sort(int[] data) { %7zuQ \w  
sort(data, IMPROVED_QUICK); O#:$^#j&  
} Ktb\ bw  
private static String[] name={ 5D\f8L  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Aw$x;3y  
}; 60P#,o@G  
|=Eo?Q_  
private static Sort[] impl=new Sort[]{ (G zb  
new InsertSort(), "6MVvpy"  
new BubbleSort(), QdT}wkX  
new SelectionSort(), z>58dA@f  
new ShellSort(), N60rgSzI  
new QuickSort(), @e(o129  
new ImprovedQuickSort(), }Lc-7[/  
new MergeSort(), nzd2zY>V  
new ImprovedMergeSort(), Wk~W Ozr}^  
new HeapSort() 0h#l JS*  
}; _ky,;9G]  
5]KW^sL  
public static String toString(int algorithm){ |^:cG4e  
return name[algorithm-1]; B~]k#Ot)  
} FQu8 vwV6>  
)Xk0VDNp$/  
public static void sort(int[] data, int algorithm) { 7C,&*Ax,9  
impl[algorithm-1].sort(data); O@u?h9?cf>  
} Yw4n-0g  
$7O}S.x  
public static interface Sort { t[ubn+  
public void sort(int[] data); QS%%^+E2  
} nygbt<;?  
K&vF0*gN3  
public static void swap(int[] data, int i, int j) { R<\F:9  
int temp = data; RN$1bxY  
data = data[j]; d/PiiiFf,  
data[j] = temp; x'+T/zw  
} |jI#"LbF  
} 3LAIl913  
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