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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。 dc|"34;^"  
插入排序: k^:$ETW2 D  
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package org.rut.util.algorithm.support; t:9}~%~  
g~S>_~WL  
import org.rut.util.algorithm.SortUtil; eo24I0 `N  
/** k*\WzBTd  
* @author treeroot !=_:*U)-'  
* @since 2006-2-2 x}?y@.sn8  
* @version 1.0 cO.U*UTmX  
*/ ~ b!mKyrZ  
public class InsertSort implements SortUtil.Sort{ Ola>] 0l  
BOQ2;@:3  
/* (non-Javadoc) tz4MT_f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hCD0Zel  
*/ hHm &u^xY  
public void sort(int[] data) { {Nuwz|Ci  
int temp; U"v(9m@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); No=Ig-It  
} G^ZL,{  
} zQMsS  
} )!SVV~y  
@0;9.jml,  
} ;O}%_ef@  
bjmUU6VLT  
冒泡排序: Ia=wf"JS)  
V<$g^Vb  
package org.rut.util.algorithm.support; bc}U &X<  
vRpMZ)e  
import org.rut.util.algorithm.SortUtil; vQ#$.*Cvn  
G|Yw a=  
/** tx;MH5s/V  
* @author treeroot mnzamp  
* @since 2006-2-2 (`5No:?v<  
* @version 1.0 tKjPLi71  
*/ |FHeT*"  
public class BubbleSort implements SortUtil.Sort{ "CapP`:  
fIu5d6;'  
/* (non-Javadoc) +ByxhSIr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hPE#l?H@A  
*/ y\$B9KX  
public void sort(int[] data) { ~}q"M[{  
int temp; bIu '^  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >Vy=5)/i  
if(data[j] SortUtil.swap(data,j,j-1); o3P`y:&  
} Qr Dzf e[  
} Kn SXygT  
} QXY-?0RO#  
} };o6|e:2E  
*]nha1!S  
} OmQSNU.our  
UO47XAO  
选择排序: TG8QT\0G  
UTGR{>=>  
package org.rut.util.algorithm.support; IHZ WNT2  
7Vr .&`l  
import org.rut.util.algorithm.SortUtil; G(~d1%(  
M=HW2xn  
/** "^u  
* @author treeroot LY'_U0y4  
* @since 2006-2-2 &W:Wv,3  
* @version 1.0 c9/w-u~j  
*/ *v)JX _  
public class SelectionSort implements SortUtil.Sort { }@J&yrqg  
Q.7Rv XNw8  
/* =u QCm#  
* (non-Javadoc) g dT3,8`#[  
* Y5&Jgn.l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1_%jDMYH  
*/ .;ml[DXH  
public void sort(int[] data) { <mjH#aSy  
int temp; gQ3Co./  
for (int i = 0; i < data.length; i++) { )tl=tH/$  
int lowIndex = i; */sVuD^b`  
for (int j = data.length - 1; j > i; j--) { Z#BwJHh  
if (data[j] < data[lowIndex]) { _v{,vLH  
lowIndex = j; 6^F"np{w  
} 0N$tSTo.-<  
} &Y%Kr`.h  
SortUtil.swap(data,i,lowIndex); "%dWBvuO  
} \j !JRD+j  
} %Rj:r!XB:  
W?mn8Y;{`  
} QMea2q|3$  
izsAn"v  
Shell排序: M7^PWC  
2hdi)C,7Y  
package org.rut.util.algorithm.support; O Ul+es  
N3g[,BE  
import org.rut.util.algorithm.SortUtil; x.qn$?3V]  
?`V%[~4_I  
/** rp u9  
* @author treeroot V|zzj[c  
* @since 2006-2-2 $'btfo4H  
* @version 1.0 LbOjKM^-  
*/ Un@B D}@\  
public class ShellSort implements SortUtil.Sort{ x^^;/%p  
yS p]+  
/* (non-Javadoc) .",E}3zn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uNZJNrV%  
*/ wvvMesX<L  
public void sort(int[] data) { u`dWU}m)  
for(int i=data.length/2;i>2;i/=2){ y K)7%j!  
for(int j=0;j insertSort(data,j,i); 3GUO   
} h.>6>5$n  
} /1:`?% ,2  
insertSort(data,0,1); hPF9y@lh  
} ugcWFB5|  
A1e|Y  
/** XKN`{h-@  
* @param data 6pDb5@QjTy  
* @param j ZGK*]o =)  
* @param i L3lf28W  
*/ G 5w:  
private void insertSort(int[] data, int start, int inc) { QE[ETv  
int temp; mwVH>3{j  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?&EPZqI  
} XFeHkU`C  
} &:`T!n  
} L$6{{Tw"2  
:$."x '  
} Ar7vEa81  
L^3~gZ  
快速排序: L3iY Z>]  
"^VKs_U8o  
package org.rut.util.algorithm.support; %myg67u  
 x9XQ  
import org.rut.util.algorithm.SortUtil; u'M \m7  
|K| c  
/** s <Pk[7`*  
* @author treeroot ]n1@!qa48  
* @since 2006-2-2 .9{Sr[P  
* @version 1.0 [U@#whEO  
*/ r7o63]  
public class QuickSort implements SortUtil.Sort{ G/>upnA{w  
5VdF^.:u  
/* (non-Javadoc) :\9E%/aAD  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sYM3&ikyHI  
*/ DcaVT]"  
public void sort(int[] data) { Tn,'*D@l  
quickSort(data,0,data.length-1); XBe!9/'k>  
} W}#eQ|oCV  
private void quickSort(int[] data,int i,int j){ }D/0&<1  
int pivotIndex=(i+j)/2; ++D-,>.  
file://swap \L}aTCvG  
SortUtil.swap(data,pivotIndex,j); &+;z`A'|8  
RhIRCN9  
int k=partition(data,i-1,j,data[j]); zC #[  
SortUtil.swap(data,k,j); ^55#!/9  
if((k-i)>1) quickSort(data,i,k-1); }/q]:3M|  
if((j-k)>1) quickSort(data,k+1,j); ~c~N _b  
*>,8+S33r{  
} O`1_eK~1<  
/** d|CSWcU  
* @param data H4p N+  
* @param i !]=  
* @param j y<jW7GNt  
* @return Z8$n-0Ww  
*/ $ ,Y\  
private int partition(int[] data, int l, int r,int pivot) { !4TMgM  
do{ mu`h6?v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); C"no>A^  
SortUtil.swap(data,l,r); udVEO n$  
} |n3fAN  
while(l SortUtil.swap(data,l,r); oe`t ? (U  
return l; 2iC7c6hc  
} _]:wltPv  
U;p"x^U`  
} Lpd q^X  
2<53y~Yi%  
改进后的快速排序: b$\3Y'":  
XM o#LS  
package org.rut.util.algorithm.support; N@Pf\D  
\g& P5  
import org.rut.util.algorithm.SortUtil; 5<h7+ %?t9  
ovJwo r  
/** 7.7P>U  
* @author treeroot }qU(G3  
* @since 2006-2-2 $'Z\'<k[  
* @version 1.0 l?GN& u  
*/ 7\I,;swo  
public class ImprovedQuickSort implements SortUtil.Sort { /KGVMBifM  
w6 0I;.hy  
private static int MAX_STACK_SIZE=4096; jx B  
private static int THRESHOLD=10; :H($|$\h  
/* (non-Javadoc) E wDFUK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  V9\g?w  
*/ Z9TmX A@  
public void sort(int[] data) { 9NXf~-V-  
int[] stack=new int[MAX_STACK_SIZE]; 2k}~"!e1  
yop,%Fe  
int top=-1; Ve\^(9n  
int pivot; zMlW)NB'  
int pivotIndex,l,r; 2VO bj7F  
xQ4 5B` $  
stack[++top]=0; 6$]@}O^V  
stack[++top]=data.length-1; 8U}BSM_<2  
MNd8#01q`  
while(top>0){ _"Yi>.{]  
int j=stack[top--]; +Y;/10p  
int i=stack[top--]; FVw;`{  
j)?[S  
pivotIndex=(i+j)/2; NvCq5B$C  
pivot=data[pivotIndex]; S9BwCKH  
\yDr  
SortUtil.swap(data,pivotIndex,j); :f<:>"<  
}>~';l  
file://partition $OEhdz&Fi  
l=i-1; Q'-g+aN  
r=j; :: IAXGH)  
do{ oAaUXkQE  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); x[XN;W&  
SortUtil.swap(data,l,r); n?uVq6c  
} @hC,J  
while(l SortUtil.swap(data,l,r); NQb!?w  
SortUtil.swap(data,l,j); ^f][;>c  
kB~KC-&O  
if((l-i)>THRESHOLD){ eru2.(1  
stack[++top]=i; es]S]}JV  
stack[++top]=l-1; o[<lTsw<  
} tx0`#x  
if((j-l)>THRESHOLD){ g=iPv3MG  
stack[++top]=l+1; ]M2<b:yo  
stack[++top]=j; 2e~ud9,  
} { |dU|h  
-jN:~.  
} G.Z4h/1<  
file://new InsertSort().sort(data); Z*r;"WHB  
insertSort(data); bEx8dc`Q  
} EPO*{bN7O  
/** Tgxxm  
* @param data B#Sg:L9Tr'  
*/ ;yd[QT<I<  
private void insertSort(int[] data) { S#gIfb<D  
int temp; !l2=J/LJj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qU!xh )  
} }M_Yn0(3  
} #"PI%&  
} (H=7(  
z +NxO !y  
} oEfy{54  
m3o+iYkMD  
归并排序: WEX6I 16  
:.xdG>\n3  
package org.rut.util.algorithm.support; [+7 Nu  
f( =3'wQ  
import org.rut.util.algorithm.SortUtil; eAkC-Fm  
KBVW <;C$  
/** R^t )~\d  
* @author treeroot 2Mqac:L  
* @since 2006-2-2 "Yh[-[,  
* @version 1.0 ?r< F/$/  
*/ ~n)gP9Hv  
public class MergeSort implements SortUtil.Sort{ WsHC%+\'  
P?QVT;]  
/* (non-Javadoc) a+wc"RQ |  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,V$PV,G  
*/ G3 h&nH,>  
public void sort(int[] data) { #f *,mY|>  
int[] temp=new int[data.length]; =lyP &u  
mergeSort(data,temp,0,data.length-1); J})#43P  
} p~X=<JM  
4i<V^go"  
private void mergeSort(int[] data,int[] temp,int l,int r){ BNA`Cc1VV  
int mid=(l+r)/2; YG AB2`!U  
if(l==r) return ; /K+GM8rtE  
mergeSort(data,temp,l,mid); =2sj$  
mergeSort(data,temp,mid+1,r); ' pnkm0=`  
for(int i=l;i<=r;i++){ ]U9f4ODt  
temp=data; MSef2|"P#  
} P1 \:hh  
int i1=l; g7>p,  
int i2=mid+1; 8Xo`S<8VS  
for(int cur=l;cur<=r;cur++){ FPg5!O%  
if(i1==mid+1) :Ng4? +@r  
data[cur]=temp[i2++]; ,ypD0Q   
else if(i2>r) 4 VPJv>^  
data[cur]=temp[i1++]; 4JOw@/nE  
else if(temp[i1] data[cur]=temp[i1++]; <OYy ;s  
else x{=@~c%eh  
data[cur]=temp[i2++]; DM*GvBdR  
} WziX1%0$n  
} 49/j9#hr  
/3]b!lFZZ  
} u<}PcI.  
ux8:   
改进后的归并排序: HTpoYxn(  
^M51@sXI7  
package org.rut.util.algorithm.support; I $5*Puy#  
>pS @;t'  
import org.rut.util.algorithm.SortUtil;  vbol 70  
`#v(MK{9+V  
/** EUVB>%P  
* @author treeroot !21#NCw  
* @since 2006-2-2 sg=mkkD!g  
* @version 1.0 =%wwepz6  
*/ fF~3"!1#\I  
public class ImprovedMergeSort implements SortUtil.Sort { E~k_4z% M  
;JNI $DR  
private static final int THRESHOLD = 10; x{Gdr51%  
w-[A"M]I  
/* $ N7J:Q  
* (non-Javadoc) >n`!S`)9{  
* C^dnkuA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ow,4'f!d  
*/ QH?}uX'x)G  
public void sort(int[] data) { muD7+rn?&  
int[] temp=new int[data.length]; Hcts^zm2u  
mergeSort(data,temp,0,data.length-1); T~*L [*F0  
} KINKq`Sx  
i;'kQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { >Ei-Spy>Xl  
int i, j, k; vai.w-}Z  
int mid = (l + r) / 2; VaLx-RX  
if (l == r) AX {~A:B  
return; %`o3YR  
if ((mid - l) >= THRESHOLD) k!%[W,*  
mergeSort(data, temp, l, mid); h3B s  
else |fQl0hL  
insertSort(data, l, mid - l + 1); G:n,u$2a<  
if ((r - mid) > THRESHOLD) /^BaQeH?R  
mergeSort(data, temp, mid + 1, r); 9PpPAF  
else c(]NpH in  
insertSort(data, mid + 1, r - mid); !W^b:qjJ  
D$ >gAv  
for (i = l; i <= mid; i++) { {95z\UE}  
temp = data; hH=H/L_Z  
} y 093-  
for (j = 1; j <= r - mid; j++) { a0s6G3J+9  
temp[r - j + 1] = data[j + mid]; `2 vv8cg^  
} U ?%1:-#F  
int a = temp[l]; K >-)O=$s  
int b = temp[r]; M-  f)\`I  
for (i = l, j = r, k = l; k <= r; k++) { 0Q2P"1>KT/  
if (a < b) { E0g` xf 6c  
data[k] = temp[i++]; _~^JRC[q  
a = temp; jK#[r[q{  
} else { ;bC163[  
data[k] = temp[j--]; x{$~u2|  
b = temp[j]; ,+iREh;  
} L`fDc  
} m' LRP:9v  
} .x 1&   
o0f{ePZ=  
/** 3EM=6\#q  
* @param data `ViFY   
* @param l n+C,v.X  
* @param i LLa72HW  
*/ K):MT[/"  
private void insertSort(int[] data, int start, int len) { SBj9sFZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); hQm"K~SW=  
} %:^|Q;xe  
} b~M3j&  
} b r"4 7i  
} !,f#oCL  
rUb`_W@  
堆排序: NAy3Zd}  
^'UJ&UfX  
package org.rut.util.algorithm.support; r9x.c7=O  
:3,aR\  
import org.rut.util.algorithm.SortUtil; 0a#2 Lo  
]cz*k/*0  
/** U1+X!&OCp  
* @author treeroot Bf&,ACOf  
* @since 2006-2-2 WVP^C71  
* @version 1.0 gC}r$ZB(  
*/ oGK 1D  
public class HeapSort implements SortUtil.Sort{ JN9 W:X.  
7 TTU&7l~  
/* (non-Javadoc) CC(At.dd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ) o)k~6uT  
*/ b*-g@S  
public void sort(int[] data) { \2F$FRWo  
MaxHeap h=new MaxHeap(); 6[-N})  
h.init(data); s|Hrb_[;l  
for(int i=0;i h.remove(); ews4qP  
System.arraycopy(h.queue,1,data,0,data.length); 1gq(s2izy  
} ^|z  
4FmT.P  
private static class MaxHeap{ (6xrs_ea  
1 LgzqRq  
void init(int[] data){ ZfzUvN&!  
this.queue=new int[data.length+1]; R:= %gl!  
for(int i=0;i queue[++size]=data; g3p*OYf  
fixUp(size); 1:3I G=  
} <f l-P  
} DPrFBy  
[Rz9Di ;  
private int size=0; ``~7z;E%@  
-ejH%CT  
private int[] queue; vgfLI}|5  
=:T pH>f*  
public int get() { "?I]h  
return queue[1]; {X=gjQ9  
} H_RVGAb U  
QEl:>HG  
public void remove() { )G7")I J/X  
SortUtil.swap(queue,1,size--); 67Z.aaXD1  
fixDown(1); %p5%Fs`sd  
} mk)F3[ ke  
file://fixdown r!qr'Ht<  
private void fixDown(int k) { Ig&=(Kmr  
int j; Q:.q*I!D<4  
while ((j = k << 1) <= size) { (lDbArqy  
if (j < size %26amp;%26amp; queue[j] j++; 3SRz14/W_R  
if (queue[k]>queue[j]) file://不用交换 &ukYTDM  
break; &zl=}xeA  
SortUtil.swap(queue,j,k); GqFDN],Wp  
k = j; u$7o d$&S  
} pi>,>-Z  
} t)Iu\bP  
private void fixUp(int k) { '\I.P  
while (k > 1) { p'lL2 n$E  
int j = k >> 1; ;&|MNN^  
if (queue[j]>queue[k]) gZ!vRO <%  
break; ;~&F}!pQ  
SortUtil.swap(queue,j,k); K{]!hm,[3  
k = j; LY}9$1G]  
} [25[c><:w"  
} }L.xt88  
5ua`5Hb;  
} (#Vkk]-p  
.OLm{  
} kaSy 9Y{  
&E0d{ 2  
SortUtil: PZVh)6f"c  
C_SJ4Sh  
package org.rut.util.algorithm; KrcL*j&^  
+{Qk9Z  
import org.rut.util.algorithm.support.BubbleSort; BDW%cs  
import org.rut.util.algorithm.support.HeapSort; aCu 8 D!  
import org.rut.util.algorithm.support.ImprovedMergeSort; [P5+}@t  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3I87|5V,Z  
import org.rut.util.algorithm.support.InsertSort; N5>ioJj  
import org.rut.util.algorithm.support.MergeSort; by 'P}  
import org.rut.util.algorithm.support.QuickSort; 9oOr-9t3  
import org.rut.util.algorithm.support.SelectionSort; _*d8:|qw  
import org.rut.util.algorithm.support.ShellSort; o!q3+Pp;}  
D4e*Wwk  
/** h n:  
* @author treeroot 7Y`/w$  
* @since 2006-2-2 [LDV*79Z  
* @version 1.0 sEpY&6*  
*/ \'z&7;px  
public class SortUtil { *v+xKy#M  
public final static int INSERT = 1; lTl-<E;  
public final static int BUBBLE = 2; tI2V)i!  
public final static int SELECTION = 3; 7 &y'\  
public final static int SHELL = 4; D6cqON0a.  
public final static int QUICK = 5; [ML%u$-  
public final static int IMPROVED_QUICK = 6; oBfh1/< <a  
public final static int MERGE = 7; "bI'XaSv  
public final static int IMPROVED_MERGE = 8; )%8 ;C]G;  
public final static int HEAP = 9; c{YBCWA  
Up:<NHJT  
public static void sort(int[] data) { 2Zf} t  
sort(data, IMPROVED_QUICK); G}!dm0s$  
} ~Z74e>V%  
private static String[] name={ c&!EsMsU  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" W4 v/,g>  
}; <m;idfn  
JmHEYPt0  
private static Sort[] impl=new Sort[]{ (/x%zmY;/U  
new InsertSort(), Ce: 2Tw  
new BubbleSort(), U^ bF}4m  
new SelectionSort(), A 9 I5  
new ShellSort(), ZCdlTdY   
new QuickSort(), i98>=y~  
new ImprovedQuickSort(), y~,mIM$[@  
new MergeSort(), >LvQ&fAo  
new ImprovedMergeSort(), DG2CpR)S  
new HeapSort() vuL;P"F4&  
}; g^ @9SU  
nnP] x [  
public static String toString(int algorithm){ ^[]q/v'3m!  
return name[algorithm-1]; `:=af[n   
} [1OX: O|  
rCOH*m&  
public static void sort(int[] data, int algorithm) { 0)@7$Xhf  
impl[algorithm-1].sort(data); }n!$)W*?  
} azEN_oUV  
\Y37wy4  
public static interface Sort { |=R@nn   
public void sort(int[] data); 1N8:,bpsT  
} dvPK5+0W?  
Wq5Nc  
public static void swap(int[] data, int i, int j) { @xKfqKoqg  
int temp = data; ]+C;C  
data = data[j]; XTzz/.T;Z  
data[j] = temp; /z'fFl^6O  
} *@2+$fgz  
} 58TH|Rj+I  
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