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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。 }i J$&CJ  
插入排序: C7K]c4T  
je%D&ci$  
package org.rut.util.algorithm.support; }G<~Cx5[  
3,n"d-  
import org.rut.util.algorithm.SortUtil; !t}yoN n|  
/** | ^G38  
* @author treeroot MGY0^6yK5  
* @since 2006-2-2 u60RuP&  
* @version 1.0 -hc8IS  
*/ $ Ggnn#  
public class InsertSort implements SortUtil.Sort{ {h PB%  
;e< TEs  
/* (non-Javadoc) D$@2H>.-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4c[/%e:\-  
*/ {e q378d  
public void sort(int[] data) { .rS. >d^n  
int temp; @BG].UJo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); sN2m?`?"G  
} k/sfak{Q  
} bE{Y K  
} lRNm &3:-  
x/wgD'?  
} P+=m.  
?c+$9  
冒泡排序: 6B|i-b $~  
w52p y7  
package org.rut.util.algorithm.support; p$qk\efv*4  
m C`*#[  
import org.rut.util.algorithm.SortUtil; d~QM@<SV  
&$ "J\v m  
/** x^EW'-a  
* @author treeroot cjJfxD&q  
* @since 2006-2-2 I:G8B5{J  
* @version 1.0 '^>} =f  
*/ J-<_e??  
public class BubbleSort implements SortUtil.Sort{ c)B3g.C4m  
`lWGwFgg(  
/* (non-Javadoc) 8'jt59/f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >}%#s`3W1_  
*/ iC/*d  
public void sort(int[] data) { vdC0tax  
int temp; aHmg!s}&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v_Sa0}K9  
if(data[j] SortUtil.swap(data,j,j-1); 7C 0xKF  
} Z,e|L4&  
} FHw%ynC  
} e15yDwvB  
} @#OL{yMy  
,;Wm>V)o  
} 0NGth(2  
#}+H  
选择排序: 't&1y6Uu  
#~)A#~4O  
package org.rut.util.algorithm.support; a1y<Y`SC9  
-X!<$<\y;  
import org.rut.util.algorithm.SortUtil; 7@\.()  
vj%"x/TP  
/** +]A,fmI.  
* @author treeroot g9|OhymB  
* @since 2006-2-2 2HmK['(  
* @version 1.0 ;_c&J&I  
*/ Qe>_\-f  
public class SelectionSort implements SortUtil.Sort { L?+N:G  
[|oG}'Xz  
/* N=Ct3  
* (non-Javadoc) SoM,o]s#y  
* A{ T9-f@X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^UJIDg7zS  
*/ a<q9~QS  
public void sort(int[] data) { @y7KP$t  
int temp; ~6kF`}5  
for (int i = 0; i < data.length; i++) { Ve%ua]qA  
int lowIndex = i; xaVX@ 3r.3  
for (int j = data.length - 1; j > i; j--) { ^6kl4:{idE  
if (data[j] < data[lowIndex]) { 0SYJ*7lPX  
lowIndex = j; /kG?I_z  
} #)7`}7N  
} Yv]vl6<  
SortUtil.swap(data,i,lowIndex); WLXt@dK*u  
} \-]Jm[]^  
} 2QbKh)   
A+M4=  
} [>?|wQy>=  
?GNR ab  
Shell排序: /r'Fq =z  
P?>:YY53  
package org.rut.util.algorithm.support; PU.j(0  
{ObY1Y`ea  
import org.rut.util.algorithm.SortUtil; 3Y)z{o>P  
F~eYPaEKy!  
/** +sn0bi/rG  
* @author treeroot G2wSd'n*y  
* @since 2006-2-2 U`~L}w"  
* @version 1.0 >wqWIw.w>  
*/ "})OLa  
public class ShellSort implements SortUtil.Sort{ [^a7l$fmi  
ckFPx l.  
/* (non-Javadoc) k}g4?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Dj=$Q44  
*/ uYlyU~M:D  
public void sort(int[] data) { Jb> X$|N'%  
for(int i=data.length/2;i>2;i/=2){ Ew.6y=Ba  
for(int j=0;j insertSort(data,j,i); &k*oG: J3  
} mnZfk  
} DS4y@,/)'  
insertSort(data,0,1); vD#kH 1  
} au=@]n#<(  
a6 :hH@,  
/** p<D@l2vt  
* @param data I+Yq",{%  
* @param j 'e<8j  
* @param i //r)dN^  
*/ N@X6Z!EO  
private void insertSort(int[] data, int start, int inc) { "u sPzp5  
int temp; -0`n(`2  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Ed0}$ b  
} fbdpDVmpU  
} QaE!?R  
} @[\zO'|  
5sEk rT '  
} _XT;   
eFy {VpO+  
快速排序: dqB N_P%  
`DGI|3  
package org.rut.util.algorithm.support; +>yh` Zb  
h c]p^/H  
import org.rut.util.algorithm.SortUtil; u!+;Iy7  
-+2A@kmEJ  
/** +S#Xm4  
* @author treeroot x<w-j[{k_K  
* @since 2006-2-2 qOQ8a:]?  
* @version 1.0 }{PG^Fc<P  
*/ 3 Sf':N`u  
public class QuickSort implements SortUtil.Sort{ ;2 ?fz@KZ  
3H>\hZ  
/* (non-Javadoc) w4Hq|N1-Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kbH@h2Ww  
*/ ~-sG&u>  
public void sort(int[] data) { PN J&{4wY  
quickSort(data,0,data.length-1); x{G 'IEf  
}  Ks^wX  
private void quickSort(int[] data,int i,int j){ 3)e{{]6  
int pivotIndex=(i+j)/2; 5~[][VV^  
file://swap &oZU=CN  
SortUtil.swap(data,pivotIndex,j); Bz%wV-  
b>#dMRK  
int k=partition(data,i-1,j,data[j]); f }.t  
SortUtil.swap(data,k,j); Ck m:;q  
if((k-i)>1) quickSort(data,i,k-1); CZy3]O"qW  
if((j-k)>1) quickSort(data,k+1,j); @a=jSB#B  
y G mFi  
}  r/)ZKO,  
/** R S>qP;V*-  
* @param data Zrgv*  
* @param i j`Ek:  
* @param j +RiI5.$=Z  
* @return /74h+.amg  
*/ 3=Uyt  
private int partition(int[] data, int l, int r,int pivot) { Dwr"-  
do{ 7G Erh,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); a>d`g  
SortUtil.swap(data,l,r); b53s@7/mq  
} MIiBNNURX  
while(l SortUtil.swap(data,l,r); mxpw4  
return l; bkpN`+c  
} RHbbj}B  
s bR*[2  
} LZ&I<ID`-  
+o0yx U 7t  
改进后的快速排序: ) jM-5}"  
(4C)] RHQ  
package org.rut.util.algorithm.support; Fo~q35uB  
O@dK^o  
import org.rut.util.algorithm.SortUtil; ~6QV?j  
*Utx0Me  
/** VpY,@qh  
* @author treeroot ~,8#\]xR  
* @since 2006-2-2 m*i,|{UZ  
* @version 1.0 mjk<FXW  
*/ Q]RE,ZZ  
public class ImprovedQuickSort implements SortUtil.Sort { @$%.iQ7A;  
KilN`?EJ  
private static int MAX_STACK_SIZE=4096; c]$$ap  
private static int THRESHOLD=10; fwUF5Y  
/* (non-Javadoc) :C0)[L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3.ShAL  
*/ 1r*@1y<0"  
public void sort(int[] data) { #8BI`.t)j  
int[] stack=new int[MAX_STACK_SIZE]; R'atg 9  
 s%5XBI  
int top=-1; FBzsM7]j  
int pivot; VOg'_#I  
int pivotIndex,l,r; *7L1SjZw  
f3.oc9G  
stack[++top]=0; {aK3'-7  
stack[++top]=data.length-1; ]zIIi%  
iHQ$L# 7  
while(top>0){ EW `WFBjj  
int j=stack[top--]; dAOJ: @y  
int i=stack[top--]; !i@A}$y  
I58$N+#  
pivotIndex=(i+j)/2; /h]ru SI  
pivot=data[pivotIndex]; 23Q 88z   
e$rPXRf  
SortUtil.swap(data,pivotIndex,j); Vk[M .=J  
Bc b '4*:  
file://partition ;W\?lGOs{  
l=i-1; K(TejW#  
r=j; h2?\A%  
do{ KAu>U3\/  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); zq3f@xOK  
SortUtil.swap(data,l,r); W}%[i+  
} G)o:R iq  
while(l SortUtil.swap(data,l,r); ^B7Ls{  
SortUtil.swap(data,l,j); 'Ddzlip  
u1. 0-Y?  
if((l-i)>THRESHOLD){ I"KosSs  
stack[++top]=i; um( xZ6&m  
stack[++top]=l-1; l2Rnyb<;;  
} \ *g3j  
if((j-l)>THRESHOLD){ E7/i_Xkk  
stack[++top]=l+1; O+[s4]  
stack[++top]=j; BV}sN{  
} ^D ;EbR  
g+?2@L$L  
} Q DKY7"H  
file://new InsertSort().sort(data); 2a 7"~z~  
insertSort(data); |nqN95'u+]  
} zp``e;gY  
/** _|;{{8*?  
* @param data Wq}W )E  
*/ 8cURYg6v  
private void insertSort(int[] data) { {7_C|z:'p&  
int temp; b"OHXu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); OO,EUOh-T:  
} 15Jc PDV  
} 7E5 =Qx  
} <vxTfE@>bp  
([7XtG/?  
} rdAy '38g  
3[ xHY@c  
归并排序: 8CH9&N5W5t  
OgHqF,0MN  
package org.rut.util.algorithm.support; 7d+0'3%  
 OAgZeK$  
import org.rut.util.algorithm.SortUtil; x<.(fRv   
pkTVQdtRG  
/** ^E~1%Md.  
* @author treeroot oqg +<m  
* @since 2006-2-2 ]c]^(C  
* @version 1.0 %CUwD  
*/ dh%DALZ8t  
public class MergeSort implements SortUtil.Sort{ KJs`[,;<  
`91Z]zGpU  
/* (non-Javadoc) ;3%Y@FS@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *uKYrs [  
*/ BbPRPkV  
public void sort(int[] data) { \c!e_rZ  
int[] temp=new int[data.length]; [lu+"V,<LJ  
mergeSort(data,temp,0,data.length-1); Q9;VSF)  
} m9\~dD  
D<WGau2H  
private void mergeSort(int[] data,int[] temp,int l,int r){ %:sP#BQM  
int mid=(l+r)/2; m8+ EMBl  
if(l==r) return ; <Ynrw4[)t  
mergeSort(data,temp,l,mid); ][XCpJ)8  
mergeSort(data,temp,mid+1,r); xl,6O!aR  
for(int i=l;i<=r;i++){ `P$X`;SwE  
temp=data; NSq29#  
} vJsg6oH  
int i1=l; u<+"#.[2v~  
int i2=mid+1; Tr;&bX5]H  
for(int cur=l;cur<=r;cur++){ k?1e + \  
if(i1==mid+1) R38 \&F  
data[cur]=temp[i2++]; +k0UVZZX?  
else if(i2>r) kv2 H3O  
data[cur]=temp[i1++]; (`R heEg@f  
else if(temp[i1] data[cur]=temp[i1++]; [@]i_L[  
else *?>52 -&b  
data[cur]=temp[i2++];  lsgZ  
} F;Q'R |HQ  
} n;~'W*Ln0  
 @l&{ j  
}  &'?Hh(  
y I[kaH"J  
改进后的归并排序: AKS. XW  
A7T(p7pP  
package org.rut.util.algorithm.support; [+!+Yn6:  
' t^ r2N/  
import org.rut.util.algorithm.SortUtil; Qtt3;5m  
,L-V?B(UQ  
/** QT|\TplJt  
* @author treeroot aY DM)b}  
* @since 2006-2-2 PO|gM8E1x?  
* @version 1.0 O:8Ne*L`D  
*/  xS="o  
public class ImprovedMergeSort implements SortUtil.Sort { xhB-gG=  
gf^y3F[\  
private static final int THRESHOLD = 10; PtGFLM9R  
<S12=<c?'  
/* 98vn"=3  
* (non-Javadoc) BHU=TK@GR  
* aPX'CG4m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cs[nFfM  
*/ j9BcoEl:;  
public void sort(int[] data) { j@4]0o  
int[] temp=new int[data.length]; Sae*VvT6  
mergeSort(data,temp,0,data.length-1); v9Lf|FXo&  
} J?1Eh14KZ  
X9C:AGbp  
private void mergeSort(int[] data, int[] temp, int l, int r) { 1k{H,p7  
int i, j, k; lk=[Xo  
int mid = (l + r) / 2; b27t-p8  
if (l == r) +6L.a3&(b  
return; cb/$P!j7  
if ((mid - l) >= THRESHOLD) 3@1$y`SN  
mergeSort(data, temp, l, mid); aFL<(,~r  
else 'L^M"f^I  
insertSort(data, l, mid - l + 1); *g4Uo{  
if ((r - mid) > THRESHOLD) gyU=v{].  
mergeSort(data, temp, mid + 1, r); >A}ra^gU  
else (R9"0WeF  
insertSort(data, mid + 1, r - mid); 7_eV.'h  
Qz$Wp*  
for (i = l; i <= mid; i++) { z$VVt ?K  
temp = data; "kKIv|`  
} Z5`V\$  
for (j = 1; j <= r - mid; j++) { R?J8#JPXD  
temp[r - j + 1] = data[j + mid]; C\0,D9  
} E_{P^7Z|Jg  
int a = temp[l]; BU|m{YZ$  
int b = temp[r]; ~N )(|N  
for (i = l, j = r, k = l; k <= r; k++) { ppeF,Q  
if (a < b) { ^Gi WU +`  
data[k] = temp[i++]; ;x/. 8fA  
a = temp; &0{&4,  
} else { dE 3M   
data[k] = temp[j--]; .fK~IKA  
b = temp[j]; .m xc~  
} y-Lm^ GW4  
} -1ci.4F&  
} 6 I43a1[s  
gUiZv8C  
/** %mOQIXr1s  
* @param data Xod/GY G  
* @param l D"{%[;J  
* @param i JYLAu4s6  
*/ m,F4N$  
private void insertSort(int[] data, int start, int len) { uTy00`1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); -y/Y%]%0  
} {H 3wL  
} q{!ft9|K\d  
} H<q z rO  
} uY3?(f#  
&-Q_%eM^  
堆排序: LDDt=HEY4  
E:P_CDSd]  
package org.rut.util.algorithm.support; `*B6T7p1  
k~JTQh*,w  
import org.rut.util.algorithm.SortUtil; unr`.}A2>  
2l~qzT-  
/** LfvRH?<W  
* @author treeroot WHRBYq_  
* @since 2006-2-2 3RI %OCGF  
* @version 1.0 c2PBYFCyC  
*/ k?Njge6@  
public class HeapSort implements SortUtil.Sort{ R-Y 7I  
{k']nI.>  
/* (non-Javadoc) j<h0`v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - R`nitf  
*/ _V3}F1?W  
public void sort(int[] data) { i~m;Ah,#  
MaxHeap h=new MaxHeap(); S AKIFNE  
h.init(data); 880T'5}S :  
for(int i=0;i h.remove(); o\nFSG kn  
System.arraycopy(h.queue,1,data,0,data.length); YIHGXi<"n  
} Z|d+1i  
^fbzlu?G4-  
private static class MaxHeap{ +Ecn  
&#'.I0n  
void init(int[] data){ =r~ExW}+  
this.queue=new int[data.length+1]; $8Gj9mw4e'  
for(int i=0;i queue[++size]=data; :7s2M  
fixUp(size); rW*[sLl3  
} ,F=FM>o  
} 9ol&p>  
k jx<;##R8  
private int size=0; AzSmfEaU0  
/7WdG)'  
private int[] queue; 1CS\1[E  
Hr*xAx  
public int get() { t24.u+O  
return queue[1]; w[u>*I  
} f/sLQdK,  
+rka 5ts  
public void remove() { 4?c0rC<  
SortUtil.swap(queue,1,size--); Bsj^R\  
fixDown(1); )vGxF}I3  
} Lv>OBHD  
file://fixdown 4!-/m7%eF  
private void fixDown(int k) {  $kxu-  
int j; RH;A|[7T&  
while ((j = k << 1) <= size) { ?JR?PW8  
if (j < size %26amp;%26amp; queue[j] j++; 9x#T j/5%  
if (queue[k]>queue[j]) file://不用交换 jT4 m(j  
break; MKX58y{+  
SortUtil.swap(queue,j,k); a._>?rVy  
k = j;  )eH?3""  
} NOl/y@#  
} q<cxmo0S  
private void fixUp(int k) { X#ud_+6x  
while (k > 1) { NZ% v{?  
int j = k >> 1; ?2K~']\S  
if (queue[j]>queue[k]) b.cBg.a  
break; R=S)O.*R  
SortUtil.swap(queue,j,k); Tz7|OV_W$  
k = j; 5dL!e<<  
} hcR^?  
} 'T]Ok\  
!z]{zM%  
} N({-&A.N  
/mK]O7O7  
} Q'aVdJN,  
{#z[iiB  
SortUtil: ;7(vqm<V2~  
0hq\{pw_y*  
package org.rut.util.algorithm; XLlJ|xhY-K  
03!#99  
import org.rut.util.algorithm.support.BubbleSort; -9R.mG  
import org.rut.util.algorithm.support.HeapSort; SfPtG  
import org.rut.util.algorithm.support.ImprovedMergeSort; L8KaK  
import org.rut.util.algorithm.support.ImprovedQuickSort; -5@hU8B'a  
import org.rut.util.algorithm.support.InsertSort; l=47#zbpZ]  
import org.rut.util.algorithm.support.MergeSort; \\Nt^j3qR  
import org.rut.util.algorithm.support.QuickSort; nE4rB\  
import org.rut.util.algorithm.support.SelectionSort; ?&POVf>  
import org.rut.util.algorithm.support.ShellSort;  }S}%4c>  
M%5_~g2n'\  
/** )ZpMB  
* @author treeroot k-sBf Jy\  
* @since 2006-2-2 0,6! 6>BOT  
* @version 1.0 ' ?EG+o8  
*/ <@;bxSUx  
public class SortUtil { @`aPr26>?  
public final static int INSERT = 1; vX$|/74  
public final static int BUBBLE = 2; kWgrsN+Z  
public final static int SELECTION = 3; }{.V^;  
public final static int SHELL = 4; E>F6!qYm  
public final static int QUICK = 5; %4w#EbkSS  
public final static int IMPROVED_QUICK = 6; VA%4ssy  
public final static int MERGE = 7; %/R[cj 8  
public final static int IMPROVED_MERGE = 8; E/_n}$Z  
public final static int HEAP = 9; dDl_Pyg4K  
~jJe|zg>  
public static void sort(int[] data) { $Y%,?>AL<  
sort(data, IMPROVED_QUICK); ;kD Rm'(  
} _ FN#Vq2  
private static String[] name={ _w7yfZLv+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" %/RT}CBBsW  
}; ?*cCn-|  
IC-W[~  
private static Sort[] impl=new Sort[]{ +KIFLuL  
new InsertSort(), P} Y .  
new BubbleSort(), ty8E;[ '  
new SelectionSort(), 2D"aAI<P  
new ShellSort(), J n'SGR  
new QuickSort(), COA>y?  
new ImprovedQuickSort(), M?I^`6IOc8  
new MergeSort(), nsu RG  
new ImprovedMergeSort(), KqXPxp^_Al  
new HeapSort() Q 2 B  
}; Om2w+yU  
FMC]KXSd  
public static String toString(int algorithm){ =@MJEo`D  
return name[algorithm-1]; "nU] 2  
} \Z-Fu=8J8^  
iO}KERfU  
public static void sort(int[] data, int algorithm) { Kae-Y  
impl[algorithm-1].sort(data); ccy q~  
} cPX^4d~9  
[!`5kI  
public static interface Sort { *Z3b6X'e  
public void sort(int[] data); V/yj.aA*@  
} E|_}?>{R  
"1rT> ASWI  
public static void swap(int[] data, int i, int j) { Am#Pa,g  
int temp = data; <A&Zl&^1  
data = data[j]; %.;;itB  
data[j] = temp; ,Eo\(j2F.  
} [x -<O:r=P  
}  |?ZNGPt  
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