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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。 {GDMix  
插入排序: $Gb] K{e  
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package org.rut.util.algorithm.support; |+Z, 7~!  
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import org.rut.util.algorithm.SortUtil; 6U;pYWht  
/** FUzIuz 6  
* @author treeroot iorKS+w"  
* @since 2006-2-2 bF %#KSVw  
* @version 1.0 rDkAeX0  
*/ [ P\3XSR  
public class InsertSort implements SortUtil.Sort{ Eq zS={Olj  
J{' u  
/* (non-Javadoc) |D)NP N&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9 v)p0  
*/ V%k[S|f3  
public void sort(int[] data) { Q:Q) -|,  
int temp; C 5QPt  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @`2<^-r\  
} 'U]= T<  
} T[M?:~  
} r{qM!(T  
SeAokz>  
} >T{9-_#P  
RWmQP%A}aw  
冒泡排序: 8[(eV.  
h.c<A{[I6c  
package org.rut.util.algorithm.support;  r(pp =  
:T3I"  
import org.rut.util.algorithm.SortUtil; 6'W79  
j &)Xi^^  
/** :P`sK&b_  
* @author treeroot b)@%gS\F  
* @since 2006-2-2 r$=MBeT  
* @version 1.0 a?6 r4u0  
*/ sKIWr{D  
public class BubbleSort implements SortUtil.Sort{ b?7?iV4  
uy\< t  
/* (non-Javadoc) Z!=/[,b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P\;lH"9  
*/ M= !Fb  
public void sort(int[] data) { X5U.8qI3  
int temp; Sr~zN:wn  
for(int i=0;i for(int j=data.length-1;j>i;j--){ (8o~ XL  
if(data[j] SortUtil.swap(data,j,j-1); yrO'15TB  
} x!bFbi#!"  
} ?KpHvf'  
} 9 m&"x/k  
} x<60=f[O2R  
W >eJGZ<  
} XG ]yfux`  
ju8tNL,J  
选择排序: $K^"a  
gWA)V*}f  
package org.rut.util.algorithm.support; +B^ / =3P  
a`(6hL3IT  
import org.rut.util.algorithm.SortUtil; /_v5B>  
YIb5jK `  
/** *%(8z~(\  
* @author treeroot )0`;leli  
* @since 2006-2-2 T[>h6d  
* @version 1.0 N( E\  
*/ ;RZ@t6^  
public class SelectionSort implements SortUtil.Sort { 4]nU%`Z1w  
iaXNf ])?  
/* XyJ*>;q  
* (non-Javadoc) leyhiL<  
* A/RHb^N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k\|G%0Jw  
*/ <aa# OX  
public void sort(int[] data) { >i~W$; t  
int temp; {g\Yy(r  
for (int i = 0; i < data.length; i++) { sLK J<=0i  
int lowIndex = i; 1B= vrGq  
for (int j = data.length - 1; j > i; j--) { mk_cub@  
if (data[j] < data[lowIndex]) { 7CYu"+Ea  
lowIndex = j; &0SGAJlec  
} Je2o('MA  
} *X\i= K!  
SortUtil.swap(data,i,lowIndex); *3WK:0  
} r&)/3^S '  
} -h^FSW($-R  
Tn2Z{.q$  
} ('Wo#3b$  
)u]J`.OA  
Shell排序: 4>>{}c!nf  
'|&}rLr:+  
package org.rut.util.algorithm.support; K+Q81<X~  
UBqA[9  
import org.rut.util.algorithm.SortUtil; D|Wekhm  
]B=B@UO@.  
/** rZ 9bz}K  
* @author treeroot  Fwyv>U  
* @since 2006-2-2 pl Ii  
* @version 1.0 K CJ zE>  
*/ </tiNc  
public class ShellSort implements SortUtil.Sort{ Gnp,~F"  
GjE/!6b  
/* (non-Javadoc) *XS@Ku  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [ik D4p=  
*/ ?l`DkUo*j  
public void sort(int[] data) { '?t]iRCeI7  
for(int i=data.length/2;i>2;i/=2){ LW?] ~|  
for(int j=0;j insertSort(data,j,i); "5Oog<  
} 'VFxg,  
} ]Rohf WHX  
insertSort(data,0,1); [Ua4{3#  
}  dKDtj:  
[' R2$z  
/** PKT0Drv}c7  
* @param data >WE3$Q>bi  
* @param j y/mxdP w  
* @param i Bk a\0+  
*/ _X;^'mqf~  
private void insertSort(int[] data, int start, int inc) { )`F? {Sg  
int temp; #Bj{ 4OeV  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LdR}v%EH  
} Smo^/K`f9  
} [%;LZZgl  
} O^G/(  
l*uNi47|  
} 'IP'g,o++  
suj? e6  
快速排序: GBtBmV/`  
OJ8W'"`L&  
package org.rut.util.algorithm.support; NSHWs%Zc  
gg'lb{oG  
import org.rut.util.algorithm.SortUtil; 9X,dV7 yW  
(FbqKx'uq  
/** 8U0y86q>)E  
* @author treeroot AOWX=`J8V  
* @since 2006-2-2 d~C YZ  
* @version 1.0 ZJsc?*@  
*/ 4pV.R5:  
public class QuickSort implements SortUtil.Sort{ @!'Pr$`  
c_}i(HQ  
/* (non-Javadoc) 5!}xl9D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :y!e6  
*/ |4YDvDEJi  
public void sort(int[] data) { :N\*;>  
quickSort(data,0,data.length-1); Z}f$ KWj  
} P[n` X  
private void quickSort(int[] data,int i,int j){ .a:"B\B`  
int pivotIndex=(i+j)/2; Z66akr  
file://swap r1EccY  
SortUtil.swap(data,pivotIndex,j); w4:S>6X  
]p(+m_F  
int k=partition(data,i-1,j,data[j]); n%I%Kbw  
SortUtil.swap(data,k,j); ! 1C3{  
if((k-i)>1) quickSort(data,i,k-1); P .3j |)NW  
if((j-k)>1) quickSort(data,k+1,j); Im{50%Y  
;WJ}zjo >  
} Wd~aSz9  
/** N/DcaHFYo  
* @param data yJWgz`/L  
* @param i 9@./=5N~3  
* @param j HC*=E.J  
* @return Kpz>si?CL  
*/ ;TF(opW:  
private int partition(int[] data, int l, int r,int pivot) { Bt[`p\p@  
do{ UMm<HQ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3qiE#+dC  
SortUtil.swap(data,l,r); a-4'jT:  
} Ah='E$t  
while(l SortUtil.swap(data,l,r); +Qt=N6>  
return l; 4} 'Xrg  
} O;ZU{VY  
{ > {|3  
} 6LL/wemq  
I7 pxi$8f  
改进后的快速排序: bsC~ 2S\o  
m'KY;C  
package org.rut.util.algorithm.support; y1,L0v$=}  
7_.z3K m:  
import org.rut.util.algorithm.SortUtil; /'QNlP[L;  
= PcmJG]  
/** "BK'<j^q  
* @author treeroot rhMsZ={M  
* @since 2006-2-2 IQMk:  
* @version 1.0 kCL)F\v"iT  
*/ T_\HU*\  
public class ImprovedQuickSort implements SortUtil.Sort { Ljq/f& c  
$@FD01h.t3  
private static int MAX_STACK_SIZE=4096; jRm:9`.Q  
private static int THRESHOLD=10; ]NNLr;p  
/* (non-Javadoc) pM@|P,w {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Hl[Fit<j1  
*/ Y]{<IF:  
public void sort(int[] data) { v{i'o4  
int[] stack=new int[MAX_STACK_SIZE]; q5 I2dNE  
x|_%R v  
int top=-1; Zd1+ZH  
int pivot; /[VafR!  
int pivotIndex,l,r; ! o:m*:  
M-K<w(,X  
stack[++top]=0; >{~W"  
stack[++top]=data.length-1; =<_xUh.  
24:;vcb  
while(top>0){ }el. qZ  
int j=stack[top--]; e7t).s)b{  
int i=stack[top--]; >1`FR w<  
P1vr}J  
pivotIndex=(i+j)/2; R<Ojaj=V  
pivot=data[pivotIndex]; H;k;%Zg;  
QN9$n%Z  
SortUtil.swap(data,pivotIndex,j); <t,uj.9_  
 LS,/EGJ  
file://partition 3q R@$pm  
l=i-1; MxuwEV|^  
r=j; {W3%n*q  
do{ LU_@8i:  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ilw<Q-o4(  
SortUtil.swap(data,l,r); KM g`O3_16  
} =%znY`0b56  
while(l SortUtil.swap(data,l,r); fa=#S  
SortUtil.swap(data,l,j); SDcxro|8i  
p.n]y=o.)  
if((l-i)>THRESHOLD){ F:%= u =  
stack[++top]=i; j2cLb  
stack[++top]=l-1; K7F uMB  
} },2-\-1  
if((j-l)>THRESHOLD){ "FT5]h  
stack[++top]=l+1; W8,XSUl  
stack[++top]=j; hmtRs]7  
} @/lLL GrZ"  
W,`u5gbT  
} f~jx2?W  
file://new InsertSort().sort(data); u6'vzLmM  
insertSort(data); #^gn,^QQ  
} 7I/Sfmqy"O  
/** -g]/Ko]2@$  
* @param data 1.o-2:]E  
*/ s{NEP/QQJ  
private void insertSort(int[] data) { p)f OAr  
int temp; +Q_X,gZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qBpv[m  
} GD}3 r:wDs  
} sRE$*^i  
} Un]`Gd]:  
u'd+:uH  
} f62z9)`^  
W:aAe%S  
归并排序: yc+#LZ~(a  
Y:^~KS=Uz  
package org.rut.util.algorithm.support; b\7-u-   
]}<.Y[!S  
import org.rut.util.algorithm.SortUtil; !w[<?+%%n  
`=^29LC#  
/** -3/:Dk`3  
* @author treeroot _c['_HC  
* @since 2006-2-2 qRJg/~_h{  
* @version 1.0 "z69jxXo  
*/ M/5/Tp  
public class MergeSort implements SortUtil.Sort{ owCQ71Q  
{DI_i +2  
/* (non-Javadoc) f?dNTfQ3mi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ":"QsS#*"#  
*/ 'AF2:T\  
public void sort(int[] data) { #~Lh#@h  
int[] temp=new int[data.length]; MfJk`-%~  
mergeSort(data,temp,0,data.length-1); Xf:CGR8_  
} r9uY ?M  
Gs7mO  
private void mergeSort(int[] data,int[] temp,int l,int r){ % rdW:  
int mid=(l+r)/2;  ^OI  
if(l==r) return ; \u2K?wC  
mergeSort(data,temp,l,mid); vYL{5,t {1  
mergeSort(data,temp,mid+1,r); z<+".sD'  
for(int i=l;i<=r;i++){ oZ& ns!#  
temp=data; J@oGAa%3)  
} @@*->  
int i1=l; 4adCMfP7.  
int i2=mid+1; *wwLhweQ5W  
for(int cur=l;cur<=r;cur++){ 9HLn_|yU  
if(i1==mid+1) V8NJ0fF  
data[cur]=temp[i2++]; 76c4~IG#  
else if(i2>r) +AZ=nMgW  
data[cur]=temp[i1++]; ,M>W)TSH  
else if(temp[i1] data[cur]=temp[i1++]; 1#^[{XlAx  
else Qf414 oW  
data[cur]=temp[i2++]; DHbLS3-  
}  s+[_5n~  
} q5BJsw  
TIW6v4  
} Ar'}#6  
BgA\l+  
改进后的归并排序: 1HN_  
DOkEWqM!  
package org.rut.util.algorithm.support; "ltvD\  
=oluw|TCe7  
import org.rut.util.algorithm.SortUtil; `-\4Dx1!q  
Z%`} `(  
/** Q[i;I bY  
* @author treeroot x~$P.X7(~  
* @since 2006-2-2 9u1_L`+b  
* @version 1.0 CHdw>/5  
*/ ~r]ZD)  
public class ImprovedMergeSort implements SortUtil.Sort { )3.udx  
9'3bzhT$  
private static final int THRESHOLD = 10; +DF<o U~  
|}es+<P  
/* -v&Q 'a  
* (non-Javadoc) MCurKT<pQ  
* j~\\,fl=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )P[B!  
*/ ({m["d  
public void sort(int[] data) { YJuaQxs  
int[] temp=new int[data.length]; kmy?`P10(z  
mergeSort(data,temp,0,data.length-1); GL@s~_;T6  
} K *{C:Y  
=V"ags   
private void mergeSort(int[] data, int[] temp, int l, int r) { /_*:  
int i, j, k; |O+R%'z'<  
int mid = (l + r) / 2; E5jK}1t4V  
if (l == r) /Or76kE  
return; y@~.b^?_u  
if ((mid - l) >= THRESHOLD) `y;&M8.  
mergeSort(data, temp, l, mid); ).9-=P HlX  
else ;)83tx /  
insertSort(data, l, mid - l + 1); 3Nr8H.u&q  
if ((r - mid) > THRESHOLD) *gMuo6  
mergeSort(data, temp, mid + 1, r); Y;e@ `.(  
else 56>Zqtp*  
insertSort(data, mid + 1, r - mid); pP{b!1  
e:AB!k^xp$  
for (i = l; i <= mid; i++) { xE9^4-Px*  
temp = data; FDbx"%A  
} $ ohwBv3S  
for (j = 1; j <= r - mid; j++) { ^dZ,Itho  
temp[r - j + 1] = data[j + mid]; 5irewh'R  
} >Eik>dQ a  
int a = temp[l]; HjGT{o  
int b = temp[r]; A7VF >{L./  
for (i = l, j = r, k = l; k <= r; k++) { T>g1! -^  
if (a < b) { a+A/l  
data[k] = temp[i++]; BR*" "/3`  
a = temp; eP &K]#  
} else { ;y=w :r\A  
data[k] = temp[j--]; Oq*a4_R'YV  
b = temp[j]; .NCQiQ  
} aZ5qq+1x  
} E Q?4?  
} E4}MvV=  
4d!&.Qo9  
/** A~*Wr+pv  
* @param data sFSrMI#R  
* @param l O5_E"um  
* @param i ovm*,La)g  
*/ |1J "r.K  
private void insertSort(int[] data, int start, int len) { ~i))Zc3,g\  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); m1\>v?=K  
} T1n GBl\(  
} *fSa8CV  
} }mu8fm'  
} dam.D.o"  
U!3nn#!yE  
堆排序: `dEWP;#cp  
[<wy @W  
package org.rut.util.algorithm.support; /PPk p9H{  
BAX])~_  
import org.rut.util.algorithm.SortUtil; bTO$B2eh|  
d`({z]W;  
/** *'d5~dz=  
* @author treeroot IdzF<>;W  
* @since 2006-2-2 &bBp`h  
* @version 1.0 h=`rZC  
*/ lba*&j]w=  
public class HeapSort implements SortUtil.Sort{ G`6U t  
eC[g"Ef  
/* (non-Javadoc) o|^0DYb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '? yZ,t  
*/ }!n<L:njX  
public void sort(int[] data) { {sX*SbJt  
MaxHeap h=new MaxHeap(); J)'6 z  
h.init(data); :JW~$4  
for(int i=0;i h.remove(); O~'1)k>  
System.arraycopy(h.queue,1,data,0,data.length); HFo}r~  
} KC}B\~ +  
S:Yo9~  
private static class MaxHeap{ BOt\"N  
/V7u0y  
void init(int[] data){ 5wGyM10  
this.queue=new int[data.length+1]; f}Uw%S=w,  
for(int i=0;i queue[++size]=data; 8P5xRUkV  
fixUp(size); "_?^uymw  
} S'ikr   
} QXXcJc~  
c^Wm~"r  
private int size=0; JXPn <  
@ o;m!CYB  
private int[] queue; >x!N@G  
(&njZdcb*  
public int get() { 61jDI^:  
return queue[1]; 6|_ S|N  
} V#3VRh  
T0tG1/O\  
public void remove() { !Z4,UTu|Q  
SortUtil.swap(queue,1,size--); ?$ YE  
fixDown(1); qIb(uF@l"  
} *}[@*  
file://fixdown M~"]h:m&'v  
private void fixDown(int k) { hrS/3c'<Z  
int j; ~x4Y57  
while ((j = k << 1) <= size) { jg%D G2  
if (j < size %26amp;%26amp; queue[j] j++; XZKOBq B]  
if (queue[k]>queue[j]) file://不用交换 ghms-.:b8  
break; <<UlFE9"  
SortUtil.swap(queue,j,k); k{@z87+&  
k = j; Ch7eUTq A@  
} JmY"Ja,&  
} f kP WGd  
private void fixUp(int k) { ~_S`zzcZy4  
while (k > 1) { [FC%_R&&  
int j = k >> 1; fl)Oto7  
if (queue[j]>queue[k]) %>JqwMK  
break; NugJjd56x  
SortUtil.swap(queue,j,k); 4pc=MR  
k = j; *YtITyDS3>  
} 0 _&oMPY  
} `bH Eu"(,  
4<LRa=XT$  
} kkzXv`+  
JVXBm]  
} jkD5Z`D  
&VQwuO  
SortUtil: 6fkL@It  
`8'|g8,wb0  
package org.rut.util.algorithm; Ge97e/ CY  
2t(E+^~  
import org.rut.util.algorithm.support.BubbleSort; > }:6m  
import org.rut.util.algorithm.support.HeapSort; }F1^gN&QF  
import org.rut.util.algorithm.support.ImprovedMergeSort; zA+ ^4/M  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?cpID8Z  
import org.rut.util.algorithm.support.InsertSort; '4O1Y0K  
import org.rut.util.algorithm.support.MergeSort; 3}N:oJI$z  
import org.rut.util.algorithm.support.QuickSort; Kt`0vwkjvI  
import org.rut.util.algorithm.support.SelectionSort; E~N}m7kTl/  
import org.rut.util.algorithm.support.ShellSort; ^8fO3<Jg  
T.K$a\/{,  
/** ,u\M7,a^  
* @author treeroot @Z|cUHo  
* @since 2006-2-2 kB  :")$  
* @version 1.0 fE^rTUtn  
*/ ){wE)NN  
public class SortUtil { /8GVu7  
public final static int INSERT = 1; $cK9E:v  
public final static int BUBBLE = 2;  gZvl D  
public final static int SELECTION = 3; S B'.   
public final static int SHELL = 4; 2QBq  
public final static int QUICK = 5; j~L{=ojz%  
public final static int IMPROVED_QUICK = 6; 43P?f+IYrk  
public final static int MERGE = 7; YSZz4?9\  
public final static int IMPROVED_MERGE = 8; Ymn0?$,D1=  
public final static int HEAP = 9; y#T":jpR  
*_^AK=i  
public static void sort(int[] data) { nQ/El&{  
sort(data, IMPROVED_QUICK); Sc*p7o: A  
} 4Ly!:GH3T  
private static String[] name={ -bE{yT)7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &JP-M=\n  
}; LiN{^g^fx  
wddF5EcK0  
private static Sort[] impl=new Sort[]{ ? 8'4~1g`}  
new InsertSort(), "lUw{3  
new BubbleSort(), <k^h&1J#g  
new SelectionSort(), ob0clJX  
new ShellSort(), f PDnkr  
new QuickSort(), *;4r|# LG  
new ImprovedQuickSort(), uK t>6DN.  
new MergeSort(), 6wxQ_Qz:Q  
new ImprovedMergeSort(), Uh&MoIBs#  
new HeapSort() Dj %jrtT  
}; ?BLd~L+  
kOkgsQQ  
public static String toString(int algorithm){ r$0" Y-a  
return name[algorithm-1]; H!vvdp?Z  
} > Y[{m $-  
1UmV &  
public static void sort(int[] data, int algorithm) { IY :iGn8R  
impl[algorithm-1].sort(data); 9i9VDk{  
} D^f;dT;-  
k^ID  
public static interface Sort { 3+(Fq5I  
public void sort(int[] data); _-&Au%QNJ`  
} RdvJA:;q  
Zcdt\;HKr  
public static void swap(int[] data, int i, int j) { w3B*%x)  
int temp = data; E8)C_[QJ`  
data = data[j]; s>_ne0  
data[j] = temp; FIW*N r  
} dGHRHXi  
} Ag}>gbz~G  
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