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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。 hyfR9~  
插入排序: Pey//U  
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package org.rut.util.algorithm.support; 22>;vM."  
m%pBXXfGYj  
import org.rut.util.algorithm.SortUtil; 4d0#86l~J/  
/** =L"^.c@  
* @author treeroot 402x<H  
* @since 2006-2-2 ym\(PCa5`  
* @version 1.0 LP9)zi  
*/ -ui< E?v  
public class InsertSort implements SortUtil.Sort{ .]P2}w)x?  
oU8>Llt=$  
/* (non-Javadoc) l4KbTKm7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H d*}k6  
*/ tjj^O%SV<  
public void sort(int[] data) { & 1_U1  
int temp; FPF6H puV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); g`n;R  
} EWA;L?g|A  
} J*j5#V];  
} qgx?"$ Z  
+dw!:P &  
} D<t~e$H  
i ?;R}%~  
冒泡排序: pj!:[d  
3;-^YG  
package org.rut.util.algorithm.support; %H& ].47  
J B^Q\;$  
import org.rut.util.algorithm.SortUtil; ;#&fgj  
7)^:8I(  
/** +{$QAjW(/  
* @author treeroot Ly7!R$X  
* @since 2006-2-2 &cu!Hx  
* @version 1.0 y\'P3ihK  
*/ fxgU~'  
public class BubbleSort implements SortUtil.Sort{ \G>ZkgU  
iY~rne"l  
/* (non-Javadoc) ,PECYwegkt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lZW K2  
*/ ]Bnwk o  
public void sort(int[] data) { ,a0pAj  
int temp; ZCYS\E 7X  
for(int i=0;i for(int j=data.length-1;j>i;j--){ &:3Z.G  
if(data[j] SortUtil.swap(data,j,j-1); $*\L4<(  
} R?pRxY  
} !^y y0`k6  
} /YH`4e5g  
} <x0H@?f7  
zN~6HZ_:^  
} vfwA$7N  
r &%.z*q  
选择排序: MT6/2d  
P`jL]x  
package org.rut.util.algorithm.support; {Dr@HP/x=s  
33K*qaRAD  
import org.rut.util.algorithm.SortUtil; l-Nly>~  
i ev>9j  
/** Bs8[+Ft5  
* @author treeroot y3eHF^K+$  
* @since 2006-2-2 >MG(qi  
* @version 1.0 2(M6(xH>  
*/ B=X,7  
public class SelectionSort implements SortUtil.Sort { V&ot3- Rf  
C$9z  
/* ~@4'HMQ  
* (non-Javadoc) FT89*C)oD  
* &|Np0R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eV7 u*d?  
*/ ;%!B[+ut"  
public void sort(int[] data) { wO.iKX;  
int temp; Q@-ovuxi  
for (int i = 0; i < data.length; i++) { XK A pLz  
int lowIndex = i; > cN~U3  
for (int j = data.length - 1; j > i; j--) { {gsdG-  
if (data[j] < data[lowIndex]) { 0F:1\9f5  
lowIndex = j; P"3*lk+w  
} 7N=-Y>$X  
} +4qU>  
SortUtil.swap(data,i,lowIndex); j_cs;G: "  
} RJ4. kt  
} PRB{VC<k  
wy,p&g)>  
} )ev<7g9*q  
)]43R   
Shell排序: 7~1IO|4t  
Vj?DA5W`'  
package org.rut.util.algorithm.support; +&|S'7&{  
xV\5<7qk5g  
import org.rut.util.algorithm.SortUtil; $uDqqG(^  
TDtAmk  
/** ]N{0:Va@D  
* @author treeroot Anm=*;*M`  
* @since 2006-2-2 %|"g/2sF[G  
* @version 1.0 sJG5/w  
*/ NbRn*nb/T  
public class ShellSort implements SortUtil.Sort{ *G5c|Y  
$s5a G)?7  
/* (non-Javadoc) &M />tE Z)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %^]?5a!  
*/ kAA>FI6  
public void sort(int[] data) { H%F>@(U  
for(int i=data.length/2;i>2;i/=2){  #^#HuDH  
for(int j=0;j insertSort(data,j,i); ^dm!)4W  
} qk/:A+  
} sTRJ:fR  
insertSort(data,0,1); O) atNE   
} 3AcD,,M>>  
eqAW+Ptx  
/** zDTv\3rZ4X  
* @param data xdvh-%A4  
* @param j &>g'$a<[  
* @param i :4gLjzL  
*/ bM,1f/^  
private void insertSort(int[] data, int start, int inc) { 2";SJF'5\  
int temp; Cq)IayD@  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ro(Zmk\t  
} (la[KqqCO  
} kgdT7  
} R(Kk{c:-@  
^' M>r (t  
} q`NXJf=sc  
*f%>YxF  
快速排序: txgQ"MGA%  
aGZi9O7G}  
package org.rut.util.algorithm.support; 81LNkE,  
nC1zzFFJ  
import org.rut.util.algorithm.SortUtil; (~~w7L s  
"es?=  
/** . #lsic8]  
* @author treeroot :Y,BdU  
* @since 2006-2-2 \daZ k /@  
* @version 1.0 U?a6D:~G  
*/ y !$alE  
public class QuickSort implements SortUtil.Sort{ VZ& A%UFC  
}Z-Z|G)#  
/* (non-Javadoc) < 0M:"^f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -s|8<A||"  
*/ J (4"S o_  
public void sort(int[] data) { KnhoaBB  
quickSort(data,0,data.length-1); 5q9s,r_  
} eB> s=}|  
private void quickSort(int[] data,int i,int j){ ew _-Eb  
int pivotIndex=(i+j)/2; ?<Wb@6kh`  
file://swap zq+o+o>xo  
SortUtil.swap(data,pivotIndex,j); ZK;zm  
jHXwOJq %  
int k=partition(data,i-1,j,data[j]); 'y]\-T  
SortUtil.swap(data,k,j); FTc.]laO  
if((k-i)>1) quickSort(data,i,k-1); mrIh0B:`  
if((j-k)>1) quickSort(data,k+1,j); 7\]E~/g  
7/7Z`  
} sg'pO*_&  
/** /S5| wNu  
* @param data (+uj1z^  
* @param i tGA :[SP  
* @param j [r+ZE7$2b"  
* @return =@,Q Dm]L  
*/ tE6!+c<7  
private int partition(int[] data, int l, int r,int pivot) { WrPUd{QM  
do{ WQ yLf;!Lz  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); wNFz*|n  
SortUtil.swap(data,l,r); AfeCK1mC@  
} @%k}FL=:t(  
while(l SortUtil.swap(data,l,r); GdV1^`M6  
return l; oi}i\: hI  
} ~qe%Yq  
!q"W{P  
} wo_,Y0vfB  
H~ZV *[A`  
改进后的快速排序: sGh(#A0Pt  
2(5ebe[  
package org.rut.util.algorithm.support; qTZFPfyU  
n  -(  
import org.rut.util.algorithm.SortUtil; su*Pk|6%  
DCqY|4Qc  
/** .ERO|$fv  
* @author treeroot Oo kh<ES>  
* @since 2006-2-2 f&v9Q97=  
* @version 1.0 "ju6XdZo  
*/ ;7N{^"r  
public class ImprovedQuickSort implements SortUtil.Sort { AJ#Nenmj  
@(r /dZc  
private static int MAX_STACK_SIZE=4096; rZ8`sIWQt  
private static int THRESHOLD=10; \%UkSO\nO3  
/* (non-Javadoc) 45hF`b>%,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %v20~xW :o  
*/ 8@so"d2e  
public void sort(int[] data) { y;/VB,4V  
int[] stack=new int[MAX_STACK_SIZE]; (o3 Iy  
jKt7M>P  
int top=-1; l;o1 d-n]  
int pivot; (#+^&1  
int pivotIndex,l,r; 2eMTxwt*S  
J!5$,%v  
stack[++top]=0; A}eOFu`  
stack[++top]=data.length-1; *_>Lmm.yh  
B)d(TP,>  
while(top>0){ pz"0J_xDM  
int j=stack[top--]; bygx]RC[  
int i=stack[top--]; <&C]s b  
p K0"%eA  
pivotIndex=(i+j)/2; O/[cpRe  
pivot=data[pivotIndex]; &b:1I 7Cp*  
/?SLdW  
SortUtil.swap(data,pivotIndex,j); lg^Z*&(  
7uzk p&+:  
file://partition 9a8cRt6knO  
l=i-1; wI(M^8F_Mf  
r=j; k:7(D_  
do{ ;!yQ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Gz .|]:1  
SortUtil.swap(data,l,r); H%D$(W  
} 21"1NJzP  
while(l SortUtil.swap(data,l,r); eJg8,7WC  
SortUtil.swap(data,l,j); t5 G9!Nn  
X&kp;W  
if((l-i)>THRESHOLD){ Kr)a2rZ}SL  
stack[++top]=i; 1I:+MBGin  
stack[++top]=l-1; Bz,?{o6s)Q  
} ](hE^\SC  
if((j-l)>THRESHOLD){ KCs[/]  
stack[++top]=l+1; R17?eucZ  
stack[++top]=j; h $2</J"  
} 0Vx.nUQ  
a\r\PBi  
} !r<pmr3f@7  
file://new InsertSort().sort(data); =E.wv  
insertSort(data); @;"|@!l|  
} E>K!Vrh-L  
/** z<Nfm  
* @param data 7 qS""f7  
*/ -f DnA4;  
private void insertSort(int[] data) { q.;u?,|E/  
int temp; Hj}K{20  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); PUUwv_  
} 6Yln, rC  
} !z>6 Uf!{  
} kDsFR#w&`  
\.-bZ$  
} gw!vlwC&T  
w(L4A0K[  
归并排序: :> 5@cvc  
q#%xro>m  
package org.rut.util.algorithm.support; j:v@pzTD  
fb~ytl<  
import org.rut.util.algorithm.SortUtil; HAa; hb  
yU*8|FQbP  
/** A*\.NTM  
* @author treeroot 5?x>9C a  
* @since 2006-2-2 (JOgy .5C~  
* @version 1.0 r8RoE`/T  
*/ Tc? $>'  
public class MergeSort implements SortUtil.Sort{ F'21jy&  
K|[*t~59  
/* (non-Javadoc) H:V2[y8\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *_d7E   
*/ X9V*UXTc  
public void sort(int[] data) { ;>Ib^ov  
int[] temp=new int[data.length]; [MUpxOAsd  
mergeSort(data,temp,0,data.length-1); u I )6M  
} ) AvN\sC  
?Wlb3;  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3ca (i/c  
int mid=(l+r)/2; {ttysQ-  
if(l==r) return ; [D I+~F  
mergeSort(data,temp,l,mid); C&(N I  
mergeSort(data,temp,mid+1,r); <<][hQs  
for(int i=l;i<=r;i++){ |IzPgC  
temp=data; 8<QdMkI  
} ;@oN s-  
int i1=l; &OH={Au  
int i2=mid+1; Li4zTR|U  
for(int cur=l;cur<=r;cur++){ K  &N  
if(i1==mid+1) {'NvG  
data[cur]=temp[i2++]; cQ R]le %(  
else if(i2>r) k5'Vy8q  
data[cur]=temp[i1++]; s;ls qQk  
else if(temp[i1] data[cur]=temp[i1++]; vg32y /l]S  
else b gK}-EU  
data[cur]=temp[i2++]; Po^?QVJ7  
} zBzZxK>$  
} u. F9g #  
VY7[)  
} zHM(!\8K  
~qTx|",  
改进后的归并排序: UM"- nZ>[  
6a~|K-a6  
package org.rut.util.algorithm.support; inMA:x}cF1  
+~ P2C6@G  
import org.rut.util.algorithm.SortUtil; -(;26\lE  
n{ar gI8wF  
/** -&zZtDd F  
* @author treeroot rlOAo`hd  
* @since 2006-2-2 Rl?_^dPx  
* @version 1.0 ia!y!_L\'  
*/ g}1B;zGf  
public class ImprovedMergeSort implements SortUtil.Sort { V17%=bCZ5[  
iP ->S\  
private static final int THRESHOLD = 10; LTQ"8  
&]|?o_p3W  
/*  iu=7O  
* (non-Javadoc) :(P9mt  
* 8e1UmM[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3YOq2pW72G  
*/ "*e$aTZB\  
public void sort(int[] data) { qN9(S:_Px  
int[] temp=new int[data.length]; -=)H{  
mergeSort(data,temp,0,data.length-1); }C"%p8=HM  
} NJWA3zz   
u}macKJmp\  
private void mergeSort(int[] data, int[] temp, int l, int r) { Z>k#n'm^z  
int i, j, k; yEqps3%  
int mid = (l + r) / 2; *av<E  
if (l == r) E Nh l&J  
return; "jKY1* ?  
if ((mid - l) >= THRESHOLD) <lPm1/8  
mergeSort(data, temp, l, mid); y.mda:$~=  
else spH7 /5}  
insertSort(data, l, mid - l + 1); FrGgga$  
if ((r - mid) > THRESHOLD) 6*78cg Io  
mergeSort(data, temp, mid + 1, r); FXG]LoP  
else "c%0P"u  
insertSort(data, mid + 1, r - mid); =(j1rW!  
|6sp/38#p  
for (i = l; i <= mid; i++) { _)3|f<E_t)  
temp = data; un mJbY;t  
} Q4#m\KK;i9  
for (j = 1; j <= r - mid; j++) { \kL 3.W_  
temp[r - j + 1] = data[j + mid]; -P$PAg5"2  
} 'uS n}hm  
int a = temp[l]; )l C)@H}  
int b = temp[r]; O`IQ(,yef  
for (i = l, j = r, k = l; k <= r; k++) { 'T*&'RQr  
if (a < b) {  dVtG/0  
data[k] = temp[i++]; pZ.ecZe/  
a = temp; qd ~BnR$=  
} else { ;#W2|'HD  
data[k] = temp[j--]; 5}l[>lF  
b = temp[j]; u5`u>.!  
} Q%`@0#"]Sv  
} t6 "%3#s  
} r= `Jn6@  
^1I19q  
/** |.: q  
* @param data ^eY!U%.  
* @param l v!~fs)cdE|  
* @param i MS~(D.@ZS  
*/ !GjQPAW  
private void insertSort(int[] data, int start, int len) { 'x#~'v*  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); f643#1  
} {I%cx Q#y  
} ? =Z?6fw  
} UmP/h@8  
} o q Xg  
5uGq%(24  
堆排序: nfbR P t  
GY'%+\*tj  
package org.rut.util.algorithm.support; #jvtUS\  
hR?{3d#x2  
import org.rut.util.algorithm.SortUtil; Mq156TL  
hn G Z=  
/** e'NJnPO  
* @author treeroot 2`K=Hby  
* @since 2006-2-2 gh]cXuph  
* @version 1.0 ZPLm]I\]  
*/ AofKw  
public class HeapSort implements SortUtil.Sort{ hED}h![  
g wRZ%.Cn  
/* (non-Javadoc) `r6,+&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UcHJR"M~c  
*/ Rsm^Z!sn  
public void sort(int[] data) { yS'I[l  
MaxHeap h=new MaxHeap(); -$ls(oot  
h.init(data); 4SxX3Fw  
for(int i=0;i h.remove(); q"lSZ; 'E  
System.arraycopy(h.queue,1,data,0,data.length); -=Q*Ml#I  
} +5*95-;0  
>1Ibc=}g  
private static class MaxHeap{ )D7m,Wi+  
D%pF;XY  
void init(int[] data){ `4J$Et%S  
this.queue=new int[data.length+1]; D;*SnU(9L  
for(int i=0;i queue[++size]=data; iOghb*aW  
fixUp(size); Rr]H y^w  
} tXs\R(?T  
} k1~&x$G  
cOJo3p;&  
private int size=0; jvL[ JI,b  
NH4#  
private int[] queue; IHac:=*Q  
rglXs  
public int get() { gPI ?C76  
return queue[1]; K($Npuu]  
} (y~TL*B  
r#p9x[f<Y  
public void remove() { +~$ ]} %  
SortUtil.swap(queue,1,size--); EW OVx*l  
fixDown(1); sY&IquK^  
} j</: WRA`]  
file://fixdown .*Y  
private void fixDown(int k) { *i%.;Z"  
int j; =8. ,43+  
while ((j = k << 1) <= size) { X&`t{Id?6  
if (j < size %26amp;%26amp; queue[j] j++; E{`fF8]K  
if (queue[k]>queue[j]) file://不用交换 45c$nuZ  
break; *] ) `z8Ox  
SortUtil.swap(queue,j,k); ]h+j)J}[A  
k = j; qR8Lh( "i  
} FcU SE  
} uw_Y\F-$  
private void fixUp(int k) { hL{KRRf>  
while (k > 1) { 8OU\V5i[,q  
int j = k >> 1; 7`'Tbp  
if (queue[j]>queue[k]) "<1{9  
break; /(*q}R3Kfo  
SortUtil.swap(queue,j,k); !l8PDjAE  
k = j; :crW9+  
} 0'C1YvF  
} dR,fXQm  
l'_r:b  
} $%#!bV  
q>+k@>bk @  
} JPw.8|V)y  
( Erc3Ac8  
SortUtil: K w ]=  
3F2w-+L  
package org.rut.util.algorithm; Wh*uaad7  
?CPahU  
import org.rut.util.algorithm.support.BubbleSort; d\8l`Krs[_  
import org.rut.util.algorithm.support.HeapSort; !pX>!&sb  
import org.rut.util.algorithm.support.ImprovedMergeSort;  x'<X!gw  
import org.rut.util.algorithm.support.ImprovedQuickSort; U 'bEL^Jf  
import org.rut.util.algorithm.support.InsertSort; "+G8d' %YV  
import org.rut.util.algorithm.support.MergeSort; rg!r[1c  
import org.rut.util.algorithm.support.QuickSort; 0 M[EEw3  
import org.rut.util.algorithm.support.SelectionSort; 8<Av@9 *}  
import org.rut.util.algorithm.support.ShellSort; )Ql%r?(F+  
jQB9j  
/** E:nF$#<'N  
* @author treeroot 64tvP^kp  
* @since 2006-2-2 M .mfw#*  
* @version 1.0 t'ql[  
*/ eeB{c.#  
public class SortUtil { N`e[:[  
public final static int INSERT = 1; XXa|BZ1RX  
public final static int BUBBLE = 2; u'BaKWPS  
public final static int SELECTION = 3; 4|?;TE5  
public final static int SHELL = 4; 1=V-V<  
public final static int QUICK = 5; `[ir}+S  
public final static int IMPROVED_QUICK = 6; CLRdm ^B  
public final static int MERGE = 7; SwMc pNo  
public final static int IMPROVED_MERGE = 8; XwaXdvmK  
public final static int HEAP = 9; q(84+{>B  
fE mr^ R  
public static void sort(int[] data) { $>LQ6|XRu  
sort(data, IMPROVED_QUICK); ( a#BV}=  
} v.qrz"98-  
private static String[] name={ &tj!*k'  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P&LsVR{#  
}; DB,J3bm  
cbTm'}R(G  
private static Sort[] impl=new Sort[]{ PdWx|y{%  
new InsertSort(), 5=ryDrx  
new BubbleSort(), 6=Otq=WH  
new SelectionSort(), _oeS Uzq.  
new ShellSort(), oUlVI*~ND  
new QuickSort(), ujpJ@OWj  
new ImprovedQuickSort(), Cw&KVw*  
new MergeSort(), H qx-;F~0  
new ImprovedMergeSort(), xJ.M;SF4  
new HeapSort() nBYZ}L q  
}; 0</);g}  
w``U=sfmV  
public static String toString(int algorithm){ >^3i|PB  
return name[algorithm-1]; Qo|\-y-#  
} PCtzl )  
k!Y, 63V=  
public static void sort(int[] data, int algorithm) { 7@W>E;go  
impl[algorithm-1].sort(data); H<+TR6k<  
} Xsa].  
3!_XEN[  
public static interface Sort { & 1f+,  
public void sort(int[] data); CU!Dhm/U  
} |vj/Wwr  
2D5StCF$O  
public static void swap(int[] data, int i, int j) { #Gi$DMW  
int temp = data; pMM8-R'W-  
data = data[j]; KMax$  
data[j] = temp; 7b+6%fV  
} hM! a_'  
} 5|)W.*Q  
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