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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。 _ c ]3nzIr  
插入排序: ViwpyC'v  
(S)E|;f%C  
package org.rut.util.algorithm.support; A :bPIXb  
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import org.rut.util.algorithm.SortUtil; zB6u-4^wT  
/** ~/jxB)t  
* @author treeroot \y H3Y  
* @since 2006-2-2  /E{dM2  
* @version 1.0 -N7L #a  
*/ 3R%UPT0>  
public class InsertSort implements SortUtil.Sort{ #>m, Cm  
 ;[KriW  
/* (non-Javadoc) `o8{qU,*]N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q X%vRf0  
*/ n~)HfY  
public void sort(int[] data) { !\#Wk0Ku  
int temp; %:w% o$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yvoo M'R  
} "vOfAo]`  
} `,Y[Z  
} u@Cf*VPK  
2@R8P~^W  
} Zp(=[n5  
P A6KX5  
冒泡排序: nJ*mEB  
'`]n_$f'  
package org.rut.util.algorithm.support; De nt?  
Awa|rIM  
import org.rut.util.algorithm.SortUtil; |v$%V#Bo  
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/** UhSh(E8p>  
* @author treeroot 71l"m^Z3zy  
* @since 2006-2-2 5Hwo)S]r  
* @version 1.0 VqClM  
*/ Uc&6=5~Ys\  
public class BubbleSort implements SortUtil.Sort{ D,dHP-v  
+-aU+7tu  
/* (non-Javadoc) =l8!VJa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 833 %H`jQc  
*/ iL0jpa<}  
public void sort(int[] data) { wAu[pWD'6;  
int temp; xv$)u<Ve  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \U!@OX.R'M  
if(data[j] SortUtil.swap(data,j,j-1); j(%gMVu  
} lP@)   
} (~ ]g,*+  
} xA&  
} pG!(6V-x<E  
Z\|u9DO  
} h eE'S/  
`&u<aLA  
选择排序: [Y22Wi  
fwi};)K  
package org.rut.util.algorithm.support; i!Dh &XT  
!_U37Uj<m  
import org.rut.util.algorithm.SortUtil; i5 L:L  
Hz]4AS  
/** *b Ci2mbm@  
* @author treeroot Gpdv]SON{  
* @since 2006-2-2 dNUR)X#e  
* @version 1.0 $bZu^d,  
*/ f`hyYp`d5  
public class SelectionSort implements SortUtil.Sort { egI{!bZg'\  
,pyQP^u-  
/* iY ^{wi~?  
* (non-Javadoc) 1m>^{u  
* I%}L@fZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <AI>8j6#B  
*/ v}F4R $  
public void sort(int[] data) { &gGs) $f[  
int temp; Xr?>uqY!M  
for (int i = 0; i < data.length; i++) { ='dLsh4P2N  
int lowIndex = i; 1 [Sv  
for (int j = data.length - 1; j > i; j--) { YVB% kKv{  
if (data[j] < data[lowIndex]) { =PNdP  
lowIndex = j; ]{IR&{EI-  
} Yzj%{fkh  
} ,8c dXt   
SortUtil.swap(data,i,lowIndex); G&x'=dJ  
} p-5P as  
} jDlA<1  
T[0V%Br{d+  
} 8pYyG |\  
8^/+wa+G  
Shell排序: cT-K@dg  
LkJ$aW/  
package org.rut.util.algorithm.support; T&1-eq>l  
]u rK$   
import org.rut.util.algorithm.SortUtil; 2#z=z d  
Qm.z@DwFM{  
/** AH&9Nye8  
* @author treeroot >j50 ;</  
* @since 2006-2-2 ==]Z \jk  
* @version 1.0 >vlQ|/C  
*/ r0F_;  
public class ShellSort implements SortUtil.Sort{ RVc)") hQj  
 9t{|_G  
/* (non-Javadoc) 0jR){G9+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T>#TDMU#Fm  
*/ Y 3o^Euou  
public void sort(int[] data) { +w "XNl  
for(int i=data.length/2;i>2;i/=2){ {]&R8?%  
for(int j=0;j insertSort(data,j,i); JAc@S20v\  
} pO"m~mpA  
} R{*_1cyW  
insertSort(data,0,1); DVObrL)znL  
} S?*^>Y-e;  
z*6$&sS\>  
/** ZV!R#Xv  
* @param data "@.Z#d|Y  
* @param j  QTVa  
* @param i |]^l^e 6m  
*/ R=`U4Ml;  
private void insertSort(int[] data, int start, int inc) { \). Nag+  
int temp; QT#b>xV)1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); fC_zX}3  
} #hIEEkCp +  
} &oA~ Tx  
} k_]\(myq  
7egq4gN]2Y  
} lZ}P{d'f.  
!q!"UMiG  
快速排序: +Dv7:x7  
!0`lu_ZN  
package org.rut.util.algorithm.support; vx'l> @]k  
{3_Gjb5\\4  
import org.rut.util.algorithm.SortUtil; }A-{6Qe  
mv{<'  
/** s~L`53A  
* @author treeroot $( S*GF$S  
* @since 2006-2-2 nt7|f,_J  
* @version 1.0 ;:P7}v fz!  
*/ >GgE,h  
public class QuickSort implements SortUtil.Sort{ bn$)f6%  
9 +}cE**=d  
/* (non-Javadoc) '?5S"??  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +6 ho)YL  
*/ U<Vy>gIC  
public void sort(int[] data) { X1Qr _o-BR  
quickSort(data,0,data.length-1); L/~D<V  
} mIvnz{_d  
private void quickSort(int[] data,int i,int j){ mxgqS=`  
int pivotIndex=(i+j)/2; 7m\vRMK  
file://swap -!l^]MU  
SortUtil.swap(data,pivotIndex,j); JRq3>P  
>zQNHSi  
int k=partition(data,i-1,j,data[j]); C ck#Y  
SortUtil.swap(data,k,j); Y.7}  
if((k-i)>1) quickSort(data,i,k-1); MZ WmlJ   
if((j-k)>1) quickSort(data,k+1,j); Y,'%7u  
E$ {J  
} 6.[)`iF+#  
/** mB~~_]M N  
* @param data =LOk13l\"  
* @param i `g--QR  
* @param j \6{LR&  
* @return . @@an;C  
*/ $%Z3;:<Uf-  
private int partition(int[] data, int l, int r,int pivot) { *#zS^b n  
do{ / $_M@>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); tj[c#@[B  
SortUtil.swap(data,l,r); }w#F6  
} K U $`!h  
while(l SortUtil.swap(data,l,r); /HZv  
return l; E4=qh1d  
} n&$/Q$d&  
z?4=h Sy  
} 4Ac}(N5D@  
_B3zRO  
改进后的快速排序: TKo<~?  
!.*iw k`  
package org.rut.util.algorithm.support; L!,d"wuD  
X &D{5~qC  
import org.rut.util.algorithm.SortUtil; NEw $q4  
GV5qdD(  
/** a$}NW.  
* @author treeroot +p z}4M`  
* @since 2006-2-2 >OK#n)U`  
* @version 1.0 h48YDWwy  
*/ [X<Pk  
public class ImprovedQuickSort implements SortUtil.Sort { P3!Atnv2  
z6I%wh  
private static int MAX_STACK_SIZE=4096; d*2u}1Jo8  
private static int THRESHOLD=10; NO2(vE  
/* (non-Javadoc) zW5C1:.3K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P 6.!3%y  
*/ TcJ$[  
public void sort(int[] data) { &qKig kLd  
int[] stack=new int[MAX_STACK_SIZE]; RU|X*3";T  
t+O e)Ns  
int top=-1; ,:UX<6l R  
int pivot; {jW%P="z$"  
int pivotIndex,l,r; i$C-)d]  
lI6W$V\,  
stack[++top]=0; x#r<,uNn,  
stack[++top]=data.length-1; nR[^|CAR  
cI:-Z{M7z  
while(top>0){  m*dNrG  
int j=stack[top--]; oxzq!U  
int i=stack[top--]; /P:EWUf'  
2)9r'ai?a  
pivotIndex=(i+j)/2; o/^1Wm=  
pivot=data[pivotIndex]; :^#vxdIC?  
)c+k_;t'+  
SortUtil.swap(data,pivotIndex,j); ;|HL+je;Z  
Z7z]2v3}c  
file://partition :IZ"D40m"  
l=i-1; JYJU&u  
r=j; ~x#vZ=]8  
do{ N}x9N.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Xb,T{.3@  
SortUtil.swap(data,l,r); JNi=`X&A  
} "}zt`3  
while(l SortUtil.swap(data,l,r); +rc SL8C  
SortUtil.swap(data,l,j); Q|c|2byb  
$gvr -~  
if((l-i)>THRESHOLD){ ?:uNN  
stack[++top]=i; ),` 8eQC  
stack[++top]=l-1; v+6e;xl8  
}  z)w-N  
if((j-l)>THRESHOLD){ orqJ[!u)`  
stack[++top]=l+1; y' [LNp V  
stack[++top]=j; cU8xUpq  
} ||Y<f *  
~=cmM  
} `5l01nOxJ  
file://new InsertSort().sort(data); T$mbk3P  
insertSort(data); n_23EcSy  
} 8:dQ._#v  
/** 5FOqv=6S  
* @param data p$XKlg&  
*/ a <wL#Id  
private void insertSort(int[] data) { {v,)G)obWw  
int temp; %\6Q .V#s  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *yez:qnx  
} 9]7u _  
} jatr/  
} 5k$vlC#[H  
HdNnUDb$B  
} !0" nx{7.  
N'?u1P4G  
归并排序: d1G8*YO@  
H M:r0_  
package org.rut.util.algorithm.support; Qihdn66  
VteEDL/w  
import org.rut.util.algorithm.SortUtil; f<=Fe:1.  
^$NJD  
/** 6R4<J% $P  
* @author treeroot 2*AG7  
* @since 2006-2-2 <[i}n55  
* @version 1.0 n>FY?  
*/ <]U1\~j  
public class MergeSort implements SortUtil.Sort{ i zwUS!5e  
c^9tYNn  
/* (non-Javadoc) #ekM"p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ea9oakF  
*/ d5!!Ut  
public void sort(int[] data) { J ^ G  
int[] temp=new int[data.length]; G;1?<3   
mergeSort(data,temp,0,data.length-1); S v`qB'e2  
} MbA\pG'T  
H"Dn]$Q\Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ PJ\0JR7a  
int mid=(l+r)/2; :Li/=>R^  
if(l==r) return ; {vVTv SC  
mergeSort(data,temp,l,mid); : ]II-$/8  
mergeSort(data,temp,mid+1,r); +ts0^;QO2{  
for(int i=l;i<=r;i++){ D/ Dt   
temp=data; Vw~\H Gs/~  
} {' 5qv@3  
int i1=l; m;,xmEp  
int i2=mid+1; 7wVH8^|  
for(int cur=l;cur<=r;cur++){ ^3~e/PKM  
if(i1==mid+1) ^?GmrHC)  
data[cur]=temp[i2++]; 7o]HQ[xO  
else if(i2>r) )jDJMi_[  
data[cur]=temp[i1++]; 6Q Zp@  
else if(temp[i1] data[cur]=temp[i1++]; j-b*C2l  
else &c%Y<1e`%  
data[cur]=temp[i2++]; 0XU}B\'<  
} r>t1 _b+nu  
} ,wj"! o#  
jndGiMA  
} B\CN<<N>dD  
o\=n4;S  
改进后的归并排序: HdX2YPYn;  
bGmx7qt#  
package org.rut.util.algorithm.support; zm#nV Y`  
*hY2.t; X  
import org.rut.util.algorithm.SortUtil; L%\b'fs  
2A:,;~UH  
/** A9:NKY{z  
* @author treeroot uGVy6,  
* @since 2006-2-2 [f{VIE*?%  
* @version 1.0 4. qtp`  
*/ i$^ZTb^  
public class ImprovedMergeSort implements SortUtil.Sort { fiDl8=~@  
V5mTu)tp5  
private static final int THRESHOLD = 10; /-M@[p&  
,kM)7!]N  
/* /X*oS&-M  
* (non-Javadoc) #x@eDnb_  
* =Lp7{09u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 27Emm c  
*/ ccJM>9  
public void sort(int[] data) { lB;FUck9  
int[] temp=new int[data.length]; &^.57]  
mergeSort(data,temp,0,data.length-1); z\!K<d"Xv  
} #"*e+.j[;  
el PE%'  
private void mergeSort(int[] data, int[] temp, int l, int r) { S: :>N.y  
int i, j, k; G}zZQy  
int mid = (l + r) / 2; \_BkY%a  
if (l == r) Ym8}ZW-  
return; m`A% p  
if ((mid - l) >= THRESHOLD) 5Av=3[kh"%  
mergeSort(data, temp, l, mid); xL "!~dN  
else 5Fw - d  
insertSort(data, l, mid - l + 1); }IaA7f  
if ((r - mid) > THRESHOLD) ]uh3R{a/  
mergeSort(data, temp, mid + 1, r); LHYLC>J  
else Xrqx\X  
insertSort(data, mid + 1, r - mid); A[N{  
0 p uY"[c  
for (i = l; i <= mid; i++) { P 7D!6q  
temp = data; F7}-!  
} YwDt.6(+,  
for (j = 1; j <= r - mid; j++) { ^QX bJJ  
temp[r - j + 1] = data[j + mid]; Dm0a.J v  
} n6Z|Q@F  
int a = temp[l]; Y3U9:VB  
int b = temp[r]; Me3dpF  
for (i = l, j = r, k = l; k <= r; k++) { 2DDsWJ;  
if (a < b) { \?fIt?  
data[k] = temp[i++]; } p:%[  
a = temp; 6" B%)0  
} else { 5<YzalNf  
data[k] = temp[j--]; V9%aBkf8w  
b = temp[j]; ?&+9WJ<M  
} :!TI K1  
} FY3IUG  
} 5"KlRuv%  
2umv|]n+l|  
/** #1nJ(-D+  
* @param data 6p;m\  
* @param l }j {!-&  
* @param i X[$++p .  
*/ t#E}NR  
private void insertSort(int[] data, int start, int len) { eVh - _  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Sus;(3EX  
} bZwnaM4"F  
} qL /7^) (  
} z?]G3$i(  
} -0uV z)  
19e8  
堆排序: #s5N[uK^m  
rRFAD{5)  
package org.rut.util.algorithm.support; oYM3Rgxf9Q  
hVpCB,  
import org.rut.util.algorithm.SortUtil; TD@v9  
n~IVNB*  
/** 1 OaXo!  
* @author treeroot W8WXY_yJt  
* @since 2006-2-2 kAYb!h[`  
* @version 1.0 B 9dt=j3j2  
*/ 1 jb/o5n;  
public class HeapSort implements SortUtil.Sort{ 8(U{2B8>\%  
;3'NMk  
/* (non-Javadoc) MjL)IgT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) } ?@5W,  
*/ e&<yX  
public void sort(int[] data) { \%jVg\4 '  
MaxHeap h=new MaxHeap(); , \)a_@@k  
h.init(data); +>f<EPGn  
for(int i=0;i h.remove(); Q 9F)  
System.arraycopy(h.queue,1,data,0,data.length); W&Y"K)`  
} VyLH"cCv  
eDKxn8+(H  
private static class MaxHeap{ D@ek9ARAq  
I27,mS+]  
void init(int[] data){ F =a+z/xKT  
this.queue=new int[data.length+1]; &dB-r&4;+  
for(int i=0;i queue[++size]=data; kma?v B  
fixUp(size); coE&24,0  
} .x83Ah`  
} Pt,ebL~  
r),PtI0X  
private int size=0; sN=6gCau  
jH;Du2w  
private int[] queue; `6=-WEo  
pL1i|O  
public int get() { gxNL_(A  
return queue[1]; <=K qc Hb  
} 6 ,ANNj  
_u0$,Y?&|  
public void remove() { _o3e]{  
SortUtil.swap(queue,1,size--); &?,U_)x/  
fixDown(1); A;XOT6jv?  
} El_Qk[X|A  
file://fixdown [IZM.r`Z  
private void fixDown(int k) { x[_=#8~.1x  
int j; 8,T4lb<<  
while ((j = k << 1) <= size) { IIFMYl gF  
if (j < size %26amp;%26amp; queue[j] j++; Y,S\2or$  
if (queue[k]>queue[j]) file://不用交换 ZfAzc6J?\  
break; 6]cryf&b  
SortUtil.swap(queue,j,k); U%<rn(xWXD  
k = j; XKOUQc4!R  
} vT^Sk;E  
} Qq& W3  
private void fixUp(int k) { w0m^ &,;#  
while (k > 1) { @exey  
int j = k >> 1; oih5B<&f#  
if (queue[j]>queue[k]) dIwe g=x  
break; \/`?  
SortUtil.swap(queue,j,k); 2.uA|~qH  
k = j; SUCU P<G  
} 9Ru;`  
} uLeRZSC  
5v.DX`"  
} sfT+i;p  
,:n| ?7  
} yY{kG2b,  
@r^!{  
SortUtil: ]w).8=I  
<z+:j!~  
package org.rut.util.algorithm;  %V G/  
b]Kk2S/  
import org.rut.util.algorithm.support.BubbleSort; `bI)<B  
import org.rut.util.algorithm.support.HeapSort; `1` f*d v  
import org.rut.util.algorithm.support.ImprovedMergeSort; U%B(5cC  
import org.rut.util.algorithm.support.ImprovedQuickSort; Z [Xa%~5>5  
import org.rut.util.algorithm.support.InsertSort; S:Q! "U  
import org.rut.util.algorithm.support.MergeSort; ~^I> #Dd  
import org.rut.util.algorithm.support.QuickSort; >>Ar$  
import org.rut.util.algorithm.support.SelectionSort; '1SG(0  
import org.rut.util.algorithm.support.ShellSort; jF"YTr6  
>cMd\%^t  
/**  P\m7 -  
* @author treeroot LHCsk{3  
* @since 2006-2-2 w?vVVA  
* @version 1.0 5MTgK=c  
*/ OWjJxORB  
public class SortUtil { . v)mZp  
public final static int INSERT = 1; 0BPMmk  
public final static int BUBBLE = 2; IakKi4(  
public final static int SELECTION = 3; 8^^[XbH  
public final static int SHELL = 4; /c# `5L[  
public final static int QUICK = 5; V~MiO.B  
public final static int IMPROVED_QUICK = 6; rZ1Hf11C  
public final static int MERGE = 7; $P o}  
public final static int IMPROVED_MERGE = 8; :PY tR  
public final static int HEAP = 9; [U =Uo*  
l.)}t)my}  
public static void sort(int[] data) { SkNre$>t{  
sort(data, IMPROVED_QUICK); j=+"Qz/hr_  
} ^H'a4G3  
private static String[] name={ EpPf _ \o  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^4Am %yyT  
}; `b5 @}',  
yBe d kj  
private static Sort[] impl=new Sort[]{ we7c`1E  
new InsertSort(), .aOnGp  
new BubbleSort(), Y(VJbm`  
new SelectionSort(), x|64l`Vp(:  
new ShellSort(), vEe NW  
new QuickSort(), 9.O8/0w7LV  
new ImprovedQuickSort(), k,Qsk d-N]  
new MergeSort(), :c[n\)U[aa  
new ImprovedMergeSort(), uwIc963  
new HeapSort() uYG^Pc^v  
}; WP **a Bp  
KLQTKMNv  
public static String toString(int algorithm){ B@v\eF;  
return name[algorithm-1]; ,3DXFV'uxb  
} Fig&&b a  
`D5HC  
public static void sort(int[] data, int algorithm) { I3S9Us-\  
impl[algorithm-1].sort(data); ?NNn:tiD  
} ~3h-jK?  
pY8q=Kl  
public static interface Sort { KGHq rc  
public void sort(int[] data); `em9T oJV  
} SF ]@|  
1M3% fW  
public static void swap(int[] data, int i, int j) { "O>n@Q|  
int temp = data; 1r)kR@!LNG  
data = data[j]; YA(@5CZ  
data[j] = temp; + A_J1iJ<  
} H( ^bC5'  
} $3+PbYY  
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