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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。 *<q4S(l  
插入排序: Y 1y E  
.CS v|:'1  
package org.rut.util.algorithm.support; Ue!Q."  
eEP( ).  
import org.rut.util.algorithm.SortUtil; ~6HDW  
/** =~J fVozU  
* @author treeroot JO}?.4B  
* @since 2006-2-2 ,]q%/yxi  
* @version 1.0 RUX8qT(Z  
*/ t3>$|}O]t  
public class InsertSort implements SortUtil.Sort{ =:/>6 H1x  
hVf^  
/* (non-Javadoc) ERC<Dd0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )E-E0Hl>7  
*/ YxyG\J\|,  
public void sort(int[] data) { aDveU)]=1  
int temp; n_P(k-^U*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); }p{;^B  
} *8UYSA~v  
} yoU2AMH2D^  
} OoM_q/oI  
c[:Wf<% |  
} t:T?7-XIE  
Nb1J ~v  
冒泡排序: oyW00]ka  
4By]vd<;=  
package org.rut.util.algorithm.support; @woC8X  
h>W@U9  
import org.rut.util.algorithm.SortUtil; >BJ}U_ck  
|D<+X^0'  
/** *l-`<.  
* @author treeroot m^A]+G#/  
* @since 2006-2-2 "K ?#,_  
* @version 1.0 n$W"=Z;`  
*/ jsdBd2Gdc  
public class BubbleSort implements SortUtil.Sort{  2d~LNy  
F.0d4:A+  
/* (non-Javadoc) 1ktHN: ta  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z"D W 2k  
*/ N7pt:G2~%  
public void sort(int[] data) { ?K<Z kYw?  
int temp; "mt p0  
for(int i=0;i for(int j=data.length-1;j>i;j--){  (YrR8  
if(data[j] SortUtil.swap(data,j,j-1); ^IgS  
} :H\&2/j  
} :~33U)?{T  
}  f`J|>Vk  
} = t-fYV  
PCZ]R  
} +6376$dC  
@/(@/*+"  
选择排序: LzE/g)>  
9[sG1eP!  
package org.rut.util.algorithm.support; 5p )IV>G  
+V1}@6k :  
import org.rut.util.algorithm.SortUtil; MWhwMj!:m  
1|/'"9v  
/** "Z~`e]>  
* @author treeroot Pw  xIz  
* @since 2006-2-2 o&,Y<$!:VH  
* @version 1.0 R9vY:oN%  
*/ ^6qjSfFW}  
public class SelectionSort implements SortUtil.Sort { 0I^Eo|  
cAibB&`~  
/* ~bGnq, .$  
* (non-Javadoc) `M)E*G  
* ns26$bU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gQR1$n0  
*/ 9FNwpL'C  
public void sort(int[] data) { Y%h}U<y  
int temp; |Ng"C`$oqv  
for (int i = 0; i < data.length; i++) { 5m`[MBt2g  
int lowIndex = i; ^W}MM8 '  
for (int j = data.length - 1; j > i; j--) { eJ:Yj ~X`<  
if (data[j] < data[lowIndex]) { NQR^%<hU  
lowIndex = j; pn s+y  
} 1MV@5j  
} !;+U_j'Pg  
SortUtil.swap(data,i,lowIndex); (H1lqlVWV#  
} ] R<FKJ[  
} 2Y;!$0_rv  
Aqu]9M~  
} R+F,H`  
>-zkB)5<,#  
Shell排序: 3KT_AJ4}  
>fbo r'|  
package org.rut.util.algorithm.support; Qg>0G%cXU  
4Cd#sQ  
import org.rut.util.algorithm.SortUtil; QPV@'.2m  
"Y(^F bs  
/** ALAL( f`  
* @author treeroot zLK\I~rU!  
* @since 2006-2-2 @p6@a6N%  
* @version 1.0 ^Xa*lR 3  
*/ HT&p{7kFm  
public class ShellSort implements SortUtil.Sort{ 'z-D%sCA  
h"8QeX:((  
/* (non-Javadoc) VWD.J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CrO`=\  
*/ ]hKgA~;  
public void sort(int[] data) { ]4GZ'&m}  
for(int i=data.length/2;i>2;i/=2){ obYn&\6  
for(int j=0;j insertSort(data,j,i); %wtXo BJ  
} zHqhl}  
} rg*^w!   
insertSort(data,0,1); m r2S!  
} _ .!aBy%xf  
.<dOED{v  
/** /sV?JV[t  
* @param data @`Wt4<  
* @param j 6W:1>,xS  
* @param i #!L%J<MX  
*/ fa yKM  
private void insertSort(int[] data, int start, int inc) { #Z!#;%S  
int temp; U$%|0@`~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AI~9m-,mE  
} jiq2x\\!  
} 7$#rNYa,z  
} 3t*#!^$  
%i3{TL  
} h(|;\~  
Zd+>  
快速排序: =+4 _j  
Hh@2m\HA  
package org.rut.util.algorithm.support; "4RQ`.S R  
}>,CUz  
import org.rut.util.algorithm.SortUtil; .8x@IWJD  
 -tMA  
/** b@!:=_Mr  
* @author treeroot *7_@7=W,  
* @since 2006-2-2 F:,#?  
* @version 1.0 ZqFUPHc  
*/ KDBY9`08  
public class QuickSort implements SortUtil.Sort{ F0&O/-w&u  
N2% :h;tf  
/* (non-Javadoc) ?y46o2b*)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZBC@xM&-  
*/ 6: GN(R$0  
public void sort(int[] data) { /vy?L\`)#  
quickSort(data,0,data.length-1); 8 #Fh>  
} vU{jda$$#  
private void quickSort(int[] data,int i,int j){ _6L H"o 3  
int pivotIndex=(i+j)/2; d "B5==0I  
file://swap Gn[*?=Vy  
SortUtil.swap(data,pivotIndex,j); XR<G} x  
hRLKb}  
int k=partition(data,i-1,j,data[j]); POY=zUQ'/  
SortUtil.swap(data,k,j); 9':/Sab:7v  
if((k-i)>1) quickSort(data,i,k-1); oAaf)?8  
if((j-k)>1) quickSort(data,k+1,j); ^9s"FdB]24  
~Zu}M>-^c,  
} ;&q]X]bJ  
/** 97(n\Wt 2  
* @param data W%WC(/hor  
* @param i fSr`>UpxC  
* @param j ^^eV4Y5`+  
* @return jQkUNPHu  
*/ }I)z7l.  
private int partition(int[] data, int l, int r,int pivot) {  -?Ejbko  
do{ , uO?;!t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LjCykk  
SortUtil.swap(data,l,r); <0>[c<{V<  
} UFL0 K  
while(l SortUtil.swap(data,l,r); c<>y!^g  
return l; ~n8F7  
} VD9J}bgJ  
cT I,1U  
} /XN*)m  
n-W?Z'H{r  
改进后的快速排序: @T_O6TcY  
-C=]n<ak  
package org.rut.util.algorithm.support; K: 4P ;ApI  
'/dTqg*W  
import org.rut.util.algorithm.SortUtil; ?N(u4atC  
\DaLHC~  
/** {vjq y&?y  
* @author treeroot _En]@xK3&  
* @since 2006-2-2 EL"4E',  
* @version 1.0 ~%/'0}F  
*/ LK{a9` h  
public class ImprovedQuickSort implements SortUtil.Sort { uFWvtL?;_  
lR, G;  
private static int MAX_STACK_SIZE=4096; VSx%8IM+X  
private static int THRESHOLD=10; vmMV n-\#  
/* (non-Javadoc) A=W5W5l(>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NPP3 (3C  
*/ c_t7RWV}  
public void sort(int[] data) { Y5Ft96o))x  
int[] stack=new int[MAX_STACK_SIZE]; roL}lM$  
I51M}b,[d  
int top=-1; FU'^n6[<B  
int pivot; q;KshpfRMD  
int pivotIndex,l,r; 0:s8o@}  
g:;Ya?5N  
stack[++top]=0; !\3 }R25  
stack[++top]=data.length-1; Qf" 6PJ  
s!NisF  
while(top>0){ `I@)<d  
int j=stack[top--]; {rs6"X^  
int i=stack[top--]; 6NU8HJp  
)ynA:LXx  
pivotIndex=(i+j)/2; 2YaTT& J  
pivot=data[pivotIndex]; GCZu<,  
t;oT {Hge  
SortUtil.swap(data,pivotIndex,j); )Gx": D  
2n _T2{  
file://partition @ca#U-:g  
l=i-1; W6)dUi :"  
r=j; !'Gb$l!  
do{ ZWov_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^Kb9@lz/  
SortUtil.swap(data,l,r); _T_PX$B  
} )H.ubM1  
while(l SortUtil.swap(data,l,r); EUJ1RhajF  
SortUtil.swap(data,l,j); .QNjeMu.  
}k4`  
if((l-i)>THRESHOLD){ ,>:XE@xcp  
stack[++top]=i; (/To?`  
stack[++top]=l-1; wVlSjk  
} fMgcK$  
if((j-l)>THRESHOLD){ 4V!1/w  
stack[++top]=l+1; t%0r"bTi  
stack[++top]=j; k\Yu5)  
} Qfwwh`;  
yLV2>kq  
} AECxd[k$9  
file://new InsertSort().sort(data); XB6N[E  
insertSort(data); Ym3 "  
} _-g-'Hr+N  
/** D >psh- ,1  
* @param data YK(XS"Kl  
*/ 0F-mROC=F  
private void insertSort(int[] data) { ]JkpRaP$  
int temp; 07~pf}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !pG+Ak?  
} 2O}s*C$Xav  
} de*,MkZN  
} (YaOh^T:|  
?v0A/68s#  
} XfD z #  
p_D on3  
归并排序: \=HfO?$ Ro  
@1/Q  
package org.rut.util.algorithm.support; $71i+h]_  
zpBBnlq  
import org.rut.util.algorithm.SortUtil; !"Z."fm*  
MoC*tImWR  
/** & y#y>([~  
* @author treeroot 9_g>BI;"8  
* @since 2006-2-2 dqIZ#;:g  
* @version 1.0 D}=/w+  
*/ GGFar\ EzW  
public class MergeSort implements SortUtil.Sort{ j+z'  
AAeQ-nbP  
/* (non-Javadoc) Dx p>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) p~v2XdR  
*/ w0q?\qEX  
public void sort(int[] data) { KZ367&>b7  
int[] temp=new int[data.length]; I{i:B  
mergeSort(data,temp,0,data.length-1); e'}ePvN  
} ;m2"cL>{l  
(cPeee%Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ Hsd|ka$x>  
int mid=(l+r)/2; *l-Dh:  
if(l==r) return ; U*`  
mergeSort(data,temp,l,mid); * K0j5dx  
mergeSort(data,temp,mid+1,r); *DPTkMQN  
for(int i=l;i<=r;i++){ zLJ:U`uh\  
temp=data; I@y2HxM  
} R#[QoyJ  
int i1=l; ?15POY ?Z  
int i2=mid+1; "jkw8UVz  
for(int cur=l;cur<=r;cur++){ QZ:]8MHl]  
if(i1==mid+1) < -@,  
data[cur]=temp[i2++]; nr<}Hc^f-  
else if(i2>r) A>&>6O4  
data[cur]=temp[i1++]; es*_Oo1  
else if(temp[i1] data[cur]=temp[i1++]; s>9z+;~!  
else %l9WZ*yZ`2  
data[cur]=temp[i2++]; F3H:I"4  
} _oMs `"4K  
} 5JXzfc9rL  
u"Hd55"&  
} / y":/" h  
:$X4#k<  
改进后的归并排序: A{{q'zb!  
a[d{>Fb.  
package org.rut.util.algorithm.support; i;uG:,ro  
Gdc ~Lh  
import org.rut.util.algorithm.SortUtil; &VZmP5Gv  
!h`cXY~ w  
/** _{Fdw  
* @author treeroot K~fDv  i  
* @since 2006-2-2 s%S_K  
* @version 1.0 D>"{H7m Y  
*/ Qw{\sCH>  
public class ImprovedMergeSort implements SortUtil.Sort { zBrWm_R5T  
%~8](]p  
private static final int THRESHOLD = 10; 3; -@<9  
Jnu}{^~  
/* rSc,\upz  
* (non-Javadoc) a?xq*|?  
* bH)8UQR%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *x# &[>  
*/ )N%1%bg^-  
public void sort(int[] data) { (c*7VO;  
int[] temp=new int[data.length]; O>o}<t7  
mergeSort(data,temp,0,data.length-1); |GVGny<  
} &EbD.>Ci  
dl3LDB  
private void mergeSort(int[] data, int[] temp, int l, int r) { !X v2PdP  
int i, j, k; i\DHIzGp[  
int mid = (l + r) / 2; ]y)R C-N  
if (l == r) ;nAg4ll8Q  
return; 7zJh;f/  
if ((mid - l) >= THRESHOLD) ^V0{Ew /x  
mergeSort(data, temp, l, mid); ;?HZ,"^I  
else AT'_0> x8  
insertSort(data, l, mid - l + 1); 'nj&}A'  
if ((r - mid) > THRESHOLD) fjK]m.w  
mergeSort(data, temp, mid + 1, r); 4LKs'$:A=  
else %RT6~0z  
insertSort(data, mid + 1, r - mid); J!TK*\a2  
_sf0{/< )  
for (i = l; i <= mid; i++) { 6{Cu~G{]N  
temp = data; J:TI>*tn  
} Zc' >}X[G  
for (j = 1; j <= r - mid; j++) { O>"r. sR  
temp[r - j + 1] = data[j + mid]; ,N@Icl  
} v[3hnLN%  
int a = temp[l]; e$xv[9  
int b = temp[r]; 0 z'={6,  
for (i = l, j = r, k = l; k <= r; k++) { wEHrer  
if (a < b) { 6GrMcI@hS  
data[k] = temp[i++]; }:c,S O!  
a = temp; G~iYF(:&  
} else { q3pN/f;kr,  
data[k] = temp[j--]; r* /XB0  
b = temp[j]; }T1Xds8w)t  
} z7us*8X{  
} nm:let7GB  
} V~uA(3\U  
e2=,n6N]c  
/** -R8!"~o  
* @param data =ZJ?xA8  
* @param l U~B}vt  
* @param i =Gg)GSL^  
*/ 2I(@aB+  
private void insertSort(int[] data, int start, int len) { w]5f3CIm  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); MF`k~)bDV  
} >. nt'BQ  
} "<n"A7e  
} /x8C70W^  
} :]z-Rz  
zHum&V8=H  
堆排序: Mbi+Vv-  
 ~bWWu`h  
package org.rut.util.algorithm.support; z1@sEfk>  
JjTzq2'%  
import org.rut.util.algorithm.SortUtil; DRg ~HT  
Tdmo'"m8z_  
/** ,%b1 ]zZQ  
* @author treeroot (.nJT"&  
* @since 2006-2-2 jv#" vQ9A]  
* @version 1.0 'N5r2JL[w  
*/ t=pkYq5t8  
public class HeapSort implements SortUtil.Sort{ '/qe#S  
F>_lp,G   
/* (non-Javadoc) E#X!*q&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WSB|-Qj}W  
*/ M(]|}%  
public void sort(int[] data) { n)?F 9Wap  
MaxHeap h=new MaxHeap(); o? xR[N-J  
h.init(data); bHH}x"d[x  
for(int i=0;i h.remove(); !.GY~f<d$  
System.arraycopy(h.queue,1,data,0,data.length); Q,qylL  
} O/r<VT Op  
A)p! w aG  
private static class MaxHeap{ aFc'_FrQ  
Y(!)G!CMc  
void init(int[] data){ UmI@":|-  
this.queue=new int[data.length+1]; YU\t+/b  
for(int i=0;i queue[++size]=data; 3SB7)8Id1  
fixUp(size); }lvP|6Y: y  
} HE<%d  
} r-"`Abev  
)Jjw}}$}Y  
private int size=0; pS)X\Xyw  
)mZy>45  
private int[] queue; 3z. >b  
bDh(;%=  
public int get() { 0c;"bA0>Sx  
return queue[1]; o!dkS/u-m  
} = Ow&UI  
*l8vCa9Y  
public void remove() { [x()^{;2  
SortUtil.swap(queue,1,size--); d_|v=^;  
fixDown(1); ]{,=mOk  
} ~hw4gdtS  
file://fixdown u H;^>`DT  
private void fixDown(int k) { $gtT5{"PN(  
int j; KUn5S&eB  
while ((j = k << 1) <= size) { "dU#j,B2  
if (j < size %26amp;%26amp; queue[j] j++; 8o5^H>  
if (queue[k]>queue[j]) file://不用交换 c+M@{EbuN  
break; J0)WRn"h  
SortUtil.swap(queue,j,k); S gsR;)2  
k = j; =,;3z/k%  
} `2~Ea_Z  
} X OtS+p  
private void fixUp(int k) { (%IstR|u:  
while (k > 1) { v+2q R0,LM  
int j = k >> 1; Oes+na'^  
if (queue[j]>queue[k]) N P(?[W  
break; }z 2-|"H  
SortUtil.swap(queue,j,k); [eik<1=,~?  
k = j; V1V4 <Zj  
} w [x+2  
} Z]+Xh  
8l,hP.  
} [GT1,(}. Z  
p2?+[d  
} /r{5Lyk*  
U"G+su->e  
SortUtil: o;P;=<  
(NV=YX?s  
package org.rut.util.algorithm; WD1$"}R  
4Lq]yUj  
import org.rut.util.algorithm.support.BubbleSort; q&S.C9W  
import org.rut.util.algorithm.support.HeapSort; Mj;'vm7#'  
import org.rut.util.algorithm.support.ImprovedMergeSort; G7{:d  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?S7:KnU>K  
import org.rut.util.algorithm.support.InsertSort; ;rdLYmmx^  
import org.rut.util.algorithm.support.MergeSort; ]lG\t'R  
import org.rut.util.algorithm.support.QuickSort; &otgN<H9  
import org.rut.util.algorithm.support.SelectionSort; i58CA?  
import org.rut.util.algorithm.support.ShellSort; Yx/~8K_%M?  
.`=PE&xq  
/** JEkVj']?  
* @author treeroot 9r*T3=u.S  
* @since 2006-2-2 a8U2c;  
* @version 1.0 F!t13%yeu?  
*/ laJ%fBWmbi  
public class SortUtil { w~-d4MNM  
public final static int INSERT = 1; 9!C?2*>A P  
public final static int BUBBLE = 2; Z'kYf   
public final static int SELECTION = 3; bW3o%srxa  
public final static int SHELL = 4; wZb@VG}%  
public final static int QUICK = 5; a6#PZ!1  
public final static int IMPROVED_QUICK = 6; ^aoLry&i=  
public final static int MERGE = 7; 6Ky"4\e  
public final static int IMPROVED_MERGE = 8; W5;sps  
public final static int HEAP = 9; LA Vgf>  
{vlh ,0~  
public static void sort(int[] data) { &y?B&4|hM  
sort(data, IMPROVED_QUICK); Om~C0  
} ikiy>W8  
private static String[] name={ $KFWV2P  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" uV:;y}T^Z  
}; p7tC~]r:L  
D:,<9%A  
private static Sort[] impl=new Sort[]{ j!H?dnE||  
new InsertSort(), 0g)mf6}o  
new BubbleSort(), g?M69~G$:x  
new SelectionSort(), r!uAofIi_  
new ShellSort(), &|;!St]!M  
new QuickSort(), GTe9@d  
new ImprovedQuickSort(), bV,R*C  
new MergeSort(), @/iLC6QF  
new ImprovedMergeSort(), ti% e.p0[  
new HeapSort() Uij$ eBN  
}; K`<P^XJr  
@jeV[N,0  
public static String toString(int algorithm){ o(qmI/h  
return name[algorithm-1]; "j>0A Hem  
} \H(,'w7H  
+[DVD  
public static void sort(int[] data, int algorithm) { gk` .8o  
impl[algorithm-1].sort(data); s1q d/  
} S22; g  
uIwyan-  
public static interface Sort { lEs/_f3;A  
public void sort(int[] data); 3!x)LUWfWY  
} )9->]U@  
de=T7,G#  
public static void swap(int[] data, int i, int j) { LlqhZetS  
int temp = data; .&dcJh*O+  
data = data[j]; fok#D>q  
data[j] = temp; K-5)Y+| >  
} &x  #5-O'  
} >?KyPp  
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