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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。 ^=-y%kp"  
插入排序: K9up:.{QQ  
Qr{E[6  
package org.rut.util.algorithm.support; @nCd  
+csi[c)3E  
import org.rut.util.algorithm.SortUtil; #%h-[/  
/** #e$5d>j(  
* @author treeroot *vwbgJG! *  
* @since 2006-2-2 W}mn}gTQ  
* @version 1.0 >: g3k  
*/ R)m'lMi|  
public class InsertSort implements SortUtil.Sort{ D-._z:_  
+O?KNZ  
/* (non-Javadoc) 7](KV"%V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~o~!+`@q  
*/ pW J Fz-  
public void sort(int[] data) { V: TM]  
int temp; <d$x.in  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XcUwr  
} VG ;kPzze  
} }WH&iES@P  
} &n8_0|gK  
d\gJ$ ~^K  
} m3/O.DY%0  
[UWd W  
冒泡排序: 9j6QX ~,  
!*B'?|a<\  
package org.rut.util.algorithm.support; M# %a(Y3K)  
=h5H~G5AT  
import org.rut.util.algorithm.SortUtil; >E{";C)  
DBr ZzA  
/** lSVp%0jR  
* @author treeroot yj.7'{mA  
* @since 2006-2-2 7E79-r&n  
* @version 1.0 ~yW4)4k;b  
*/ %2{ %Obp'  
public class BubbleSort implements SortUtil.Sort{ |#cm`v  
=V-|#j  
/* (non-Javadoc) TI,&!E?;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e9U9Uu[  
*/ ?Yth0O6?sb  
public void sort(int[] data) { Ku} Z  
int temp; (Hb:?(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4i(JZN?  
if(data[j] SortUtil.swap(data,j,j-1); UKT%13CO4U  
} FWG6uKv  
} 3@$,s~+ 3  
} ?FpWvyz|  
} 67G?K;)e  
(jRm[7H  
} ?En O"T.  
:fZ}o|t7  
选择排序: /YMj-S_b~  
'6cWS'9"  
package org.rut.util.algorithm.support; Enn"hdI  
7>))D'l57  
import org.rut.util.algorithm.SortUtil; b)qoh^  
Ki$MpA3j   
/** &-Gqdnc  
* @author treeroot Pama#6?OPh  
* @since 2006-2-2 SBfT20z[  
* @version 1.0 yDegcAn?  
*/ Kzm+GW3o[  
public class SelectionSort implements SortUtil.Sort { -~v2BN/  
R\G0'?h >  
/* bU2Z[sn.  
* (non-Javadoc) YA_c N5p/@  
* IID-k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zck#tht4 n  
*/ CR"|^{G  
public void sort(int[] data) { d\|?-hY`[  
int temp; $!-c-0ub  
for (int i = 0; i < data.length; i++) { R6kD=JY/!  
int lowIndex = i; 4gz H8sF  
for (int j = data.length - 1; j > i; j--) { K<SyC54  
if (data[j] < data[lowIndex]) { ( u\._Gwsx  
lowIndex = j; 7e|s wJ>4  
} 0zlb0[  
} |@ s,XS  
SortUtil.swap(data,i,lowIndex); F@'Jbd`   
} BW}U%B^.  
} W14 J],{L  
!Sh&3uy_qN  
} >,$_| C  
i1NY9br  
Shell排序: D%OQ e#!  
|y!=J$ $_H  
package org.rut.util.algorithm.support; /v1Q4mq  
CY s,`  
import org.rut.util.algorithm.SortUtil; =hC,@R>;  
93("oBd[s(  
/** 1{ ~#H<K  
* @author treeroot p.v0D:@&  
* @since 2006-2-2 QkEvw<  
* @version 1.0 8 D3OOab  
*/ mS$j?>m  
public class ShellSort implements SortUtil.Sort{ tl,.fjZn  
A@1W}8qY:  
/* (non-Javadoc) bLij7K 2H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z<1FSk,[  
*/ "U>JM@0DNm  
public void sort(int[] data) { 4:$4u@   
for(int i=data.length/2;i>2;i/=2){ r ~jm`y  
for(int j=0;j insertSort(data,j,i); \E72L5nJW  
} PV'x+bN5  
} 4sF"6+%5d  
insertSort(data,0,1); 5cL83FQh  
} 1 d}Z(My  
p*4':TFuD;  
/** :dl]h&C^  
* @param data I7|Pi[e  
* @param j ~?4PBq  
* @param i ZkRx1S"m  
*/ rzhWw-GY  
private void insertSort(int[] data, int start, int inc) { \o}xF@sM5  
int temp; z;{iM/Xe  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); TN!j13,  
} U\4g#!qj  
} @5=oeOg36  
} "pi=$/RD9  
]HKQDc'  
} c }Ft^Il  
OE_XCZ!5P  
快速排序: :|V$\!o'U  
-LK B$   
package org.rut.util.algorithm.support; TyD4|| %  
!"HO]3-o  
import org.rut.util.algorithm.SortUtil; J*yf2&lI5  
N..yQ-6x?  
/** &zl|87M  
* @author treeroot 5{|7$VqPF  
* @since 2006-2-2 <k eVrCR  
* @version 1.0 nhB1D-  
*/ ]fx"4qKM  
public class QuickSort implements SortUtil.Sort{ GY6`JWk  
#|Y5,a ,{  
/* (non-Javadoc) NPhhD&W_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5,3'=mA6  
*/ 9_L[w\P|4  
public void sort(int[] data) { 1->dMm}G[  
quickSort(data,0,data.length-1); ,X[kt z  
} <C1H36p  
private void quickSort(int[] data,int i,int j){ "cE7 5  
int pivotIndex=(i+j)/2; oX#Q<2z*  
file://swap 63q^ $I  
SortUtil.swap(data,pivotIndex,j); m!|kW{B#A  
O,+1<.;+  
int k=partition(data,i-1,j,data[j]); K SbKEA  
SortUtil.swap(data,k,j); [.O?Z=5a[V  
if((k-i)>1) quickSort(data,i,k-1); <{dVKf,e  
if((j-k)>1) quickSort(data,k+1,j); yCd-9zb=  
1t:Q_j0Ym  
} [>+4^&  
/** ^nT/i .#_  
* @param data d?s<2RkPT  
* @param i RY]#<9>M  
* @param j <6EeD5{*  
* @return s [M?as  
*/ 6CV* Z\b  
private int partition(int[] data, int l, int r,int pivot) { %}SGl${-  
do{ `n#H5Oyn  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j| v%)A  
SortUtil.swap(data,l,r); t9,\Hdo  
} X\`_3=  
while(l SortUtil.swap(data,l,r); |8&,b`Gfo  
return l; :Ux?,  
} Qi ua  
V@B__`y7  
} 3VsW@SG7N  
WzPTFw[  
改进后的快速排序: -MW_| MG  
%z /hf  
package org.rut.util.algorithm.support; ~k\fhx  
zjJ *n8l  
import org.rut.util.algorithm.SortUtil; =[H;orMr  
6TQoqH8@U  
/** UR%/MV  
* @author treeroot ?+_Gs;DGVE  
* @since 2006-2-2 FK:;e lZ  
* @version 1.0 dU6ou'p f  
*/ ,p4&g)o  
public class ImprovedQuickSort implements SortUtil.Sort { 2"0es40;0  
))R5(R  
private static int MAX_STACK_SIZE=4096; q+Lr"&'Q  
private static int THRESHOLD=10; t|H^`Cv6  
/* (non-Javadoc) cQ/5qg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R{WE\T'  
*/ 9*2[B"5  
public void sort(int[] data) { C\3y {s  
int[] stack=new int[MAX_STACK_SIZE]; "8c@sHk(w  
"w^!/  
int top=-1; #D<C )Q  
int pivot; bP8Sj16q  
int pivotIndex,l,r; O;z,qo X  
~rlB'8j(  
stack[++top]=0; 1/RsptN"v  
stack[++top]=data.length-1; 5A%w 8Qv  
b1^vd@(lx  
while(top>0){ Ozw;(fDaU  
int j=stack[top--]; PpGL/,]X  
int i=stack[top--]; w Qgo N%  
||T2~Q*:y  
pivotIndex=(i+j)/2; 8 BY j  
pivot=data[pivotIndex]; W 0(_ ~  
O*eby*%h  
SortUtil.swap(data,pivotIndex,j); | h`0u'#  
{HL3<2=o  
file://partition ZRv*!n(Ug<  
l=i-1; D!Q">6_"z  
r=j; CKtB-a  
do{ &+a9+y  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,oN8HpGs  
SortUtil.swap(data,l,r); k'gh  
} m`IC6*  
while(l SortUtil.swap(data,l,r); U1@IX4^2`  
SortUtil.swap(data,l,j); {G|,\O1  
[DJflCR&  
if((l-i)>THRESHOLD){ s8QM ewU  
stack[++top]=i; D;oe2E{I  
stack[++top]=l-1; @.osJ}FxA  
} pA`+hQNN  
if((j-l)>THRESHOLD){ nA?`BOe(  
stack[++top]=l+1; hhSy0  
stack[++top]=j; XUM!Qv  
} $k|g"9  
G %N $C  
} stG~AC  
file://new InsertSort().sort(data); 8;z6=.4xtg  
insertSort(data); IYqBQnX}oM  
} ZtV9&rd7  
/** ]Oh@,V8  
* @param data <p}R~zk  
*/ aHs^tPg  
private void insertSort(int[] data) { 6,"IDH|ND  
int temp; =CK4.   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5j:0Yt  
} 4,..kSA3iw  
} ~u)}ScTp  
} g+DzscIT  
_6_IP0;  
} T#M,~lD  
kv8Fko  
归并排序: wi hH?~]  
.9,zL=)Ba  
package org.rut.util.algorithm.support; 6$fHtJD:  
m*ISa(#(,  
import org.rut.util.algorithm.SortUtil; ]P#XVDn+;  
$9 ]m=S  
/** {SwQ[$k=_  
* @author treeroot @'YS1N<  
* @since 2006-2-2 @L>q (Kg  
* @version 1.0 WF2}-NU"  
*/ IKABBW  
public class MergeSort implements SortUtil.Sort{ A&s:\3*Kh  
B,M(@5wz  
/* (non-Javadoc) UV5Ie!\nm  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1lq(PGX)  
*/ jH19k}D  
public void sort(int[] data) { Acnl^x7Y1  
int[] temp=new int[data.length]; e .]KL('  
mergeSort(data,temp,0,data.length-1);  i7]4W  
} ^sa#8^,K  
J+[_Wd  
private void mergeSort(int[] data,int[] temp,int l,int r){ 4?0vso*X<:  
int mid=(l+r)/2; ">~.$Jp_4  
if(l==r) return ; 7Ok;Lt!x  
mergeSort(data,temp,l,mid); 2}YOcnB  
mergeSort(data,temp,mid+1,r); aJYgzr,  
for(int i=l;i<=r;i++){ z)'Mk[  
temp=data; n_$ :7J  
} el2bd :  
int i1=l; xG}(5Tt  
int i2=mid+1; A{UULVp  
for(int cur=l;cur<=r;cur++){ y(Y!?X I  
if(i1==mid+1) {88)~  
data[cur]=temp[i2++]; eyefWn&  
else if(i2>r) NZ ;{t\  
data[cur]=temp[i1++]; '#s05hr  
else if(temp[i1] data[cur]=temp[i1++]; 0.dgoq 3u  
else xm%Um\Pb7  
data[cur]=temp[i2++]; =jlt5 z  
} VGtC)mG8)  
} &Ts-a$Z7?S  
O_$m!5ug  
} zV:pQRbt.  
&$"i,~q^b  
改进后的归并排序: Xg<*@4RD8  
Se HagKA  
package org.rut.util.algorithm.support; 9l}FU$  
t0z!DOODZP  
import org.rut.util.algorithm.SortUtil; ;w'D4p= P  
` jzTmt  
/** MxWy*|J}  
* @author treeroot bSsh^Z  
* @since 2006-2-2 *\=.<|HZ  
* @version 1.0 ~GTz:nC*  
*/ u@~JiiC%  
public class ImprovedMergeSort implements SortUtil.Sort { n9@ of  
f~Fm4 >\(  
private static final int THRESHOLD = 10; x\F,SEj  
-`<kCW"  
/* K#*reJ}K  
* (non-Javadoc) !lEY=1nHOJ  
* >wb 'QzF:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SGh1 DB  
*/ n3}!p'-CC  
public void sort(int[] data) { *F ? 8c  
int[] temp=new int[data.length]; U"q/rcA  
mergeSort(data,temp,0,data.length-1); )E6;-rD0^+  
} b`)){LR  
8aO~/i:(.  
private void mergeSort(int[] data, int[] temp, int l, int r) { s_x:T<]  
int i, j, k; @7n/Q(  
int mid = (l + r) / 2; @kk4]:,w  
if (l == r) ojQI7 Uhw  
return; H,+I2tEs  
if ((mid - l) >= THRESHOLD) H2Z1TIh  
mergeSort(data, temp, l, mid); ]?3un!o3o  
else zXv3:uRp.  
insertSort(data, l, mid - l + 1); e_s&L,ze  
if ((r - mid) > THRESHOLD) ?47@ o1  
mergeSort(data, temp, mid + 1, r); qtiz a~u  
else 4!+pc-}-  
insertSort(data, mid + 1, r - mid); _/Gczy4)#  
V6t,BJjS  
for (i = l; i <= mid; i++) { `kbSu}  
temp = data; uwa~-xX6  
} vJ\pR~?  
for (j = 1; j <= r - mid; j++) { N` aF{3[  
temp[r - j + 1] = data[j + mid]; a;QMA d!  
} rA2 g&  
int a = temp[l]; 6b%WHLUeT  
int b = temp[r]; ^xh}I5  
for (i = l, j = r, k = l; k <= r; k++) { nA P.^_K  
if (a < b) { L,mQ   
data[k] = temp[i++]; PH?#)l D  
a = temp; Sp7ld7c  
} else { +<xQM h8  
data[k] = temp[j--]; }Z{=|rVE  
b = temp[j]; *H?!;u=8  
} Gp4A.\7  
} N5]0/,I}  
} } b=}uiR#  
:T]o)  
/** xEf'Bmebk  
* @param data VYt!U  
* @param l sXi=70o  
* @param i mjWU0Gh%*  
*/ 2Yp7  
private void insertSort(int[] data, int start, int len) { {]E+~%Va  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e&>;*$)  
} )K,F]fc+O  
} H2 $GIY  
} %Eb%V($  
} i/~1F_  
S}$r>[t  
堆排序: ms!ref4`+  
e*bH0';q  
package org.rut.util.algorithm.support; ]4R[<<hd  
jy giG&H  
import org.rut.util.algorithm.SortUtil; =+-Yxh|*  
jeGj<m  
/** ]wKzE4Z/  
* @author treeroot "I=\[l8t  
* @since 2006-2-2 t5'V6nv  
* @version 1.0 J9\a{c;.  
*/ 9cEv&3  
public class HeapSort implements SortUtil.Sort{ F>]m3(  
zX0md x<|<  
/* (non-Javadoc) -RS7h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OCZ[D{i9@  
*/ x9x E&  
public void sort(int[] data) { 87:!C5e}  
MaxHeap h=new MaxHeap(); 5B&;uY  
h.init(data); C?i >.t  
for(int i=0;i h.remove(); D\[h:8k  
System.arraycopy(h.queue,1,data,0,data.length); ~er\~kp  
} :>TEDy~O%  
-O&CI)`;B  
private static class MaxHeap{ E2cB U{x  
oS7(s  
void init(int[] data){ ^5A t?I8  
this.queue=new int[data.length+1]; :WSDf VX  
for(int i=0;i queue[++size]=data; DyQM>xw)t  
fixUp(size); 1Wm)rXW[x  
} *+uHQgn(  
} 3&6#F"7  
M/):e$S  
private int size=0; ?0YCpn  
&g.@u~SI1  
private int[] queue; C4hx@abA  
wE@'ap#  
public int get() { )(tM/r4`c&  
return queue[1];  )$`wIp  
} Q %wY  
{_Lg tu  
public void remove() { ' Hi : 2Wh  
SortUtil.swap(queue,1,size--); W-.pmU e2  
fixDown(1); :$_6SQ<?  
} H}H7lO  
file://fixdown N nk@h  
private void fixDown(int k) { [Z~ 2  
int j; ithewup  
while ((j = k << 1) <= size) { LwhyE:1  
if (j < size %26amp;%26amp; queue[j] j++; )13dn]o=2  
if (queue[k]>queue[j]) file://不用交换 D K=cVpN%s  
break; BCe|is0  
SortUtil.swap(queue,j,k); &Ch#-CUE/  
k = j; jL^](J>  
} UN%Vg:=  
} ^S)cjH`P  
private void fixUp(int k) { Pt&(npjN,  
while (k > 1) { ?gPKcjgoH!  
int j = k >> 1; Q}!mx7b0]  
if (queue[j]>queue[k]) $uap8nN  
break; 5*E#*H  
SortUtil.swap(queue,j,k); \MK*by  
k = j; 6gT5O]]#o  
} Pl<; [cB  
} V^hE}`>z&  
ZVbl88,(l  
} e]T`ot#/  
C=s1R;"H  
} !A>z(eIsv`  
?UK|>9y}Z  
SortUtil: lj{VL}R  
\=0V uz  
package org.rut.util.algorithm; zO V=9"~{  
t\RF=BbJJ  
import org.rut.util.algorithm.support.BubbleSort; O/.Uh`T`6  
import org.rut.util.algorithm.support.HeapSort; w,O,W[C  
import org.rut.util.algorithm.support.ImprovedMergeSort; s TOa  
import org.rut.util.algorithm.support.ImprovedQuickSort; /sr2mt-Q  
import org.rut.util.algorithm.support.InsertSort; ;L|uIg;.s  
import org.rut.util.algorithm.support.MergeSort; } g3+{\x8  
import org.rut.util.algorithm.support.QuickSort; 01T`Flz  
import org.rut.util.algorithm.support.SelectionSort; M;0]u.D*=  
import org.rut.util.algorithm.support.ShellSort; fZxIY,  
n.sbr  
/** fM #7y [  
* @author treeroot UG'bOF4  
* @since 2006-2-2 Wm H~m k"  
* @version 1.0 F  q!fWl  
*/ k{VE1@  
public class SortUtil { (ewe"N+  
public final static int INSERT = 1; y$3;$ R^  
public final static int BUBBLE = 2; $5v0m#[^  
public final static int SELECTION = 3; dJv!Dts')C  
public final static int SHELL = 4; 'S2bp4G  
public final static int QUICK = 5; K"u NxZ  
public final static int IMPROVED_QUICK = 6; ->h6j  
public final static int MERGE = 7; ? tfT8$  
public final static int IMPROVED_MERGE = 8; 7HVZZ!>~  
public final static int HEAP = 9; _;4 [Q1  
7@6g<"I  
public static void sort(int[] data) { 'kYwz;gp  
sort(data, IMPROVED_QUICK); .i^7|o:  
} X*Z8CM_  
private static String[] name={ s;1]tD  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" S,U Pl}KF  
}; /B5-Fx7j3  
GZ{]0$9I'  
private static Sort[] impl=new Sort[]{ \`, [)`  
new InsertSort(), bsd99-_(4  
new BubbleSort(), -!0_:m3  
new SelectionSort(), kNT}dv]<  
new ShellSort(), VyRsPg[(  
new QuickSort(), v4RlLg dS%  
new ImprovedQuickSort(), 6YuY|JD  
new MergeSort(), l<Q>N|1#k%  
new ImprovedMergeSort(), |ou b!fG4  
new HeapSort() d*oUfiW  
}; DI`%zLDcY  
,-+"^>  
public static String toString(int algorithm){ j F-v% ?  
return name[algorithm-1]; X[2[!)Rk  
} cpt<WK}  
+n})Y  
public static void sort(int[] data, int algorithm) { kQaSbpNmH  
impl[algorithm-1].sort(data); Mc-)OtmG[  
} 15$4&=O  
P/JK$nb  
public static interface Sort { l88A=iLgv  
public void sort(int[] data); kD) $2I?  
} }pa9%BQI  
v`V7OD#:j]  
public static void swap(int[] data, int i, int j) { l;sy0S"DO]  
int temp = data; P]i =r] i  
data = data[j]; V:/7f*n7  
data[j] = temp; _SACqamo5s  
} JlKM+UE :  
} +,v-=~5  
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