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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。 _\.4ofK(  
插入排序: 8y']kVg  
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package org.rut.util.algorithm.support; = GyABK  
%VGW]!QR  
import org.rut.util.algorithm.SortUtil; dS8ydG2  
/** -=cm7/X  
* @author treeroot ?[uHRBR'  
* @since 2006-2-2 >F>VlRg  
* @version 1.0 7},oY"" 8  
*/ hF{gN3v5  
public class InsertSort implements SortUtil.Sort{ ,5V6=pr$  
$q*a}d[Q  
/* (non-Javadoc) ,CI-IR2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q_6fr$-Qh  
*/ #UE}JR3g  
public void sort(int[] data) { I 12Zh7Cc:  
int temp; :C>iV+B j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2-DG6\QX|  
} *u-$$@|y  
} DZ @B9<Zz{  
} dl"=ZI '^  
9%Tqk"x?  
} a4.w2GR  
?=LT ^Zp`  
冒泡排序: R`Fgne$4  
<S=( `D  
package org.rut.util.algorithm.support; 7H09\g&  
&XV9_{Hm  
import org.rut.util.algorithm.SortUtil; /* qx5$~  
">G*hS  
/** oN[}i6^,e  
* @author treeroot .^M#BAt2  
* @since 2006-2-2 ,p3]`MG  
* @version 1.0 >DUTmJxv  
*/ qFK.ULgP`  
public class BubbleSort implements SortUtil.Sort{ n807?FORB  
<{k`K[)  
/* (non-Javadoc) EcL6lNTR+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yuy\T(7BN  
*/ ?_FL 'G  
public void sort(int[] data) { xxyc^\$  
int temp; pbEWnx_  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $m)gfI]9  
if(data[j] SortUtil.swap(data,j,j-1); 6`7tTn?n  
} mW4Cc1*  
} ?$K-f:?c  
} $cIaLq  
} '5 Yzo^R;  
O-HS)g$2  
} ]:#=[ CH  
YTFU# F  
选择排序: "o+?vx-  
haBmwq(f  
package org.rut.util.algorithm.support; =]]1x_GB  
%SOXw 8-  
import org.rut.util.algorithm.SortUtil; t$(#$Z,RS  
>vp4R`  
/** Dc@O Mr  
* @author treeroot {daX?N|V  
* @since 2006-2-2 X+ITW#  
* @version 1.0 >STthPO  
*/ e)wi}\:q_  
public class SelectionSort implements SortUtil.Sort { jhm/ <=  
BW7AjtxQ&  
/* O_8 SlW0e  
* (non-Javadoc) L4Zt4Yuw  
* &RYdSXM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kW)3naUf<  
*/ o *J*} y  
public void sort(int[] data) { I4G0 !"T+  
int temp; 4WvW11q8U  
for (int i = 0; i < data.length; i++) { ?VNtT/  
int lowIndex = i; RbL?(  
for (int j = data.length - 1; j > i; j--) { mFF4qbe  
if (data[j] < data[lowIndex]) { 3T8d?%.l  
lowIndex = j; JY2<ECO  
} YK)m6zW5  
} uVUU1@  
SortUtil.swap(data,i,lowIndex); ):'wxIVGI  
} .qSDe+A  
} VKl,m ;&N  
gSwV:hm  
} -}%J3j|R:  
s{@R|5  
Shell排序: _# sy  
).^d3Kp  
package org.rut.util.algorithm.support; E`oA(x7l  
xT"V9t[f  
import org.rut.util.algorithm.SortUtil; @v%Kwe1Q  
K khuPBd2  
/** K>DN6{hnV;  
* @author treeroot qR'FbI  
* @since 2006-2-2 =$J(]KPv!?  
* @version 1.0 gS~H1Ro  
*/ QEs$9a5TE  
public class ShellSort implements SortUtil.Sort{ TI DgIK  
oRCc8&  
/* (non-Javadoc) H ni^S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gS'{JZu2  
*/ 8X7??f1;Y  
public void sort(int[] data) { }_'5Vb_  
for(int i=data.length/2;i>2;i/=2){ <2U@O` gC  
for(int j=0;j insertSort(data,j,i); *)Qv;'U=rn  
} 2'?'dfj  
} \Osu1]Jn>  
insertSort(data,0,1); @q'kKVJs  
} J#..xJ?XRD  
l1 Kv`v\  
/** F-/z@tM  
* @param data lD,2])>  
* @param j .rtA sbp.!  
* @param i <IZt]P  
*/ XYo,5-  
private void insertSort(int[] data, int start, int inc) { '0D$C},^|8  
int temp; `DY yK?R  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ",b:rgpRp  
} yiZtG#6K{  
} ]W5*R07  
} <c}@lj-j  
Wi&v?nm  
} :oIBJ u%/  
X+;[Gc}(W  
快速排序: iqDyE*a  
W"Ip]LJ  
package org.rut.util.algorithm.support; bCw{9El!K4  
kG>jb!e@(  
import org.rut.util.algorithm.SortUtil; |C4fg6XDL  
|Vpp'ipr  
/** #|b*l/t8  
* @author treeroot )=~&l={T  
* @since 2006-2-2 XZ%,h  
* @version 1.0 P-\f-FS  
*/ KOy{?  
public class QuickSort implements SortUtil.Sort{ ]UvB+M]Lv)  
Q>{$Aqc,e  
/* (non-Javadoc) FHOw ]"#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K}l3t2uk  
*/ rt+4-WuK>  
public void sort(int[] data) { =?OU^ u`C  
quickSort(data,0,data.length-1); R0-0  
} [bh?p+V  
private void quickSort(int[] data,int i,int j){ U?0|2hR~  
int pivotIndex=(i+j)/2; oV%:XuywT  
file://swap I0}.!  
SortUtil.swap(data,pivotIndex,j); o+1 (N#?m9  
G8M~}I/)  
int k=partition(data,i-1,j,data[j]); Ugri _  
SortUtil.swap(data,k,j); kd'b_D[$H  
if((k-i)>1) quickSort(data,i,k-1); D]@(LbMG4  
if((j-k)>1) quickSort(data,k+1,j); <&E}db  
(e7!p=D  
} egq,)6>  
/** %> XsKXj  
* @param data f-F=!^.  
* @param i %%No XW  
* @param j D :@W*,  
* @return _5p$#U`  
*/ _BewaI;w  
private int partition(int[] data, int l, int r,int pivot) { e/D{^*~S  
do{ bg zd($)u  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); }3*<sxw7<  
SortUtil.swap(data,l,r); ^OY$ W  
} Cv,WG]E7(  
while(l SortUtil.swap(data,l,r); *Dp&;,b  
return l; 8&@=Anc&q  
} /!Rva"  
6Ryc&z5  
} 84(Jo_9  
oKn$g[,SJh  
改进后的快速排序: e4YfJd  
JT 7WZc)  
package org.rut.util.algorithm.support; o26Y }W  
Gld~GyB\k  
import org.rut.util.algorithm.SortUtil; \Tz|COG5h\  
 %j&vV>2  
/** [Hx}#Kds  
* @author treeroot V>Jr4z  
* @since 2006-2-2 8-G )lyfj  
* @version 1.0 F8w7N$/V",  
*/ ?nc:bC  
public class ImprovedQuickSort implements SortUtil.Sort { LW<Lg N"L-  
eCI'<^  
private static int MAX_STACK_SIZE=4096; H>+/k-n-  
private static int THRESHOLD=10; goR_\b SU  
/* (non-Javadoc) ?A@y4<8R|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F+*E}QpM  
*/ >v,X:B?+FL  
public void sort(int[] data) { +`F(wk["m  
int[] stack=new int[MAX_STACK_SIZE]; [4yHXZxza  
!{l% 3'2  
int top=-1; J^"_H:1[  
int pivot;  hE:~~ox  
int pivotIndex,l,r; M{L<aYe  
W1)SgiXnuy  
stack[++top]=0; va@;V+cD  
stack[++top]=data.length-1; 9'( _*KSH  
-)-: rRx-  
while(top>0){ *A9v8$  
int j=stack[top--]; e,s  S.  
int i=stack[top--]; !hHe`  
]:f.="  
pivotIndex=(i+j)/2; O+-+=W  
pivot=data[pivotIndex]; +vZYuEq_  
cEHpa%_5  
SortUtil.swap(data,pivotIndex,j); 0/~p1SSun  
~ T}D#}  
file://partition }P2*MrkcHB  
l=i-1; }zA|M9%E  
r=j; lz=DGm  
do{ %>K(IR pMW  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); hEjvtfM9\-  
SortUtil.swap(data,l,r); (B` NnL$  
} 5^uX!_ r`  
while(l SortUtil.swap(data,l,r); ]Z[3 \~?  
SortUtil.swap(data,l,j); p cD}SY  
*effDNE!  
if((l-i)>THRESHOLD){ ydD:6bBX  
stack[++top]=i; _ (b4|hJ'  
stack[++top]=l-1; -~.+3rcZ]  
} 0of:tZU  
if((j-l)>THRESHOLD){ v0r:qku  
stack[++top]=l+1; u9;3Xn8  
stack[++top]=j; {X, -T&  
} oi Q3E  
+ o< 7*  
} '5$: #|-  
file://new InsertSort().sort(data); {{A=^rr%C  
insertSort(data); V,ZRX}O  
} (6[<+j&.  
/** eI2041z  
* @param data S%p,.0_  
*/ -X EK[  
private void insertSort(int[] data) { !@gjIYq_Y  
int temp; tklS=R^Vn  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |{M F o)  
} QdZHIgh`i  
}  t":^:i'M  
} ]mBlXE:Z  
'( ETXQ@  
} un6W|{4]  
!G;BYr>X  
归并排序: x=JZ"|TE  
Mn\L55?E(  
package org.rut.util.algorithm.support; cL %eP.  
^CwS'/fdN  
import org.rut.util.algorithm.SortUtil; 7B _Wz9y  
{KqW<X6Hp  
/** =aT8=ihP  
* @author treeroot vO{[P# L}  
* @since 2006-2-2 4>=Y@z  
* @version 1.0 GB >h8yXH  
*/ ,J*#Ixe}  
public class MergeSort implements SortUtil.Sort{ .R+n}>+K  
({rescQB  
/* (non-Javadoc) .@(MNq{"6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [:Odb?+`F  
*/ x@@k_'~t%  
public void sort(int[] data) { $>~4RXC  
int[] temp=new int[data.length]; kJXy )  
mergeSort(data,temp,0,data.length-1); > m9ge`!9  
} [Az^i>iH  
xI=[=;L  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9hwn,=Vh)  
int mid=(l+r)/2; .Wyx#9  
if(l==r) return ; eR1]<Z$W\  
mergeSort(data,temp,l,mid); ZONe}tv:  
mergeSort(data,temp,mid+1,r); ~f2-%~  
for(int i=l;i<=r;i++){ [VB\ T|$  
temp=data; nG5:H.)  
} EJrQ9"x&n  
int i1=l; ?6^KY+ 5`C  
int i2=mid+1; DOo34l6#  
for(int cur=l;cur<=r;cur++){ pzBd(d^*  
if(i1==mid+1) 8>^O]5Wo`X  
data[cur]=temp[i2++]; !U+XIr  
else if(i2>r) nIP*yb}5  
data[cur]=temp[i1++]; +Y^/0=6h  
else if(temp[i1] data[cur]=temp[i1++]; a U*cwR  
else Q_R&+@ju  
data[cur]=temp[i2++]; *j= whdw%J  
} hz+x)M`Y  
} @xtfm.}  
"^iw {]~U  
} [^-DFq5@  
5SY(:!  
改进后的归并排序: a)8M'f_z  
5AT[1@H(_  
package org.rut.util.algorithm.support; {7X80KI  
HTCn=MZm ?  
import org.rut.util.algorithm.SortUtil; Yf(QU`w_  
a2un[$Jq`  
/** X8b= z9  
* @author treeroot 2V#(1Hc!  
* @since 2006-2-2 {^ ^)bf|1'  
* @version 1.0 13P8Zmco  
*/ 4jl-?  
public class ImprovedMergeSort implements SortUtil.Sort { Nu'T0LPNq(  
RI_3X5.KQ  
private static final int THRESHOLD = 10; )W/ mt[;  
v [ 4J0  
/* W]rK*Dc  
* (non-Javadoc) 1yN/+Rq  
* FHS6Mk26  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =)3tVH&  
*/  u m[nz  
public void sort(int[] data) { *.J)7~(P  
int[] temp=new int[data.length]; tPHDnh^n]  
mergeSort(data,temp,0,data.length-1); PI#xRKt  
} -Ug  
x%JtI'sg  
private void mergeSort(int[] data, int[] temp, int l, int r) { y#Ao6Od6  
int i, j, k; gI qYIt  
int mid = (l + r) / 2; 8`*Wl;9u  
if (l == r) X99:/3MXB'  
return; VMUK|pC4 K  
if ((mid - l) >= THRESHOLD) Ii /#cdgF  
mergeSort(data, temp, l, mid); 54w..8'  
else kmm1b (  
insertSort(data, l, mid - l + 1); G:QaWqUb  
if ((r - mid) > THRESHOLD) M3350  
mergeSort(data, temp, mid + 1, r); mpBSd+ ;Z  
else ;aip1Df  
insertSort(data, mid + 1, r - mid); u+GtH;<;  
CCOd4  
for (i = l; i <= mid; i++) { r(IQ)\GR  
temp = data; wPYz&&W  
} G_{x)@  
for (j = 1; j <= r - mid; j++) { )Ab!R:4  
temp[r - j + 1] = data[j + mid]; YT6<1-E#  
} LoQm&3/  
int a = temp[l]; y1!c:&  
int b = temp[r]; .AOf-a  
for (i = l, j = r, k = l; k <= r; k++) { pDO&I]S`q0  
if (a < b) { vlAYKtl3]  
data[k] = temp[i++]; p `)(  
a = temp; PK@hf[YHe  
} else { n0:Y* Op  
data[k] = temp[j--]; _ 6"!y ]Q  
b = temp[j]; %Uj7 g>  
} rYbb&z!u  
} o/bmS57  
} y{ReQn3> y  
\-Mzs 0R  
/** ^b=9{.5  
* @param data )2KQZMtgm]  
* @param l sHx>UvN6  
* @param i !fXwX3B  
*/ !j,LS$tPu  
private void insertSort(int[] data, int start, int len) { lL.3$Rp;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); &o>ctf.x  
} mrR~[533j  
} s+;J`_M  
} y#Je%tAe 2  
} XRi/O)98o  
DA'A-C2  
堆排序: v0EF?$Wo  
,MkldCV  
package org.rut.util.algorithm.support; u2=gG.  
rO8Q||@>A  
import org.rut.util.algorithm.SortUtil; WVaIC$Y  
xlQl1lOX  
/** ^6*LuXPv  
* @author treeroot Ul@ Jg    
* @since 2006-2-2 &w@~@]  
* @version 1.0 Y{yN*9a79  
*/ ]^9B%t s9  
public class HeapSort implements SortUtil.Sort{ C1 qyjlR  
0@;kD]Z  
/* (non-Javadoc) 5r1{l%?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TE+d?  
*/ 7gIK+1`  
public void sort(int[] data) { >y<yFO{  
MaxHeap h=new MaxHeap(); TUeW-'/1  
h.init(data); Of| e]GR  
for(int i=0;i h.remove(); OE,uw2uaT  
System.arraycopy(h.queue,1,data,0,data.length); yl63VX8w}  
} yxfV|ox  
qucw%hJr  
private static class MaxHeap{ UPtWj8h  
C4V#qhj  
void init(int[] data){ u+7B-l=u*  
this.queue=new int[data.length+1]; 6*@\Qsp615  
for(int i=0;i queue[++size]=data; rSTc4m1R  
fixUp(size); -OLXRc=  
} 9:tvkl  
} `_L=~F8  
j!c[$;  
private int size=0; F12tOSfu*  
\<ohe w  
private int[] queue; k&\YfE3*  
79J@`  
public int get() { oYWcX9R  
return queue[1]; /$OX'L&b  
} !oXA^7Th6]  
s }P-4Sg  
public void remove() { t >89( k  
SortUtil.swap(queue,1,size--); :P$I;YY=A  
fixDown(1); ypxqW8Xe  
} % I]?xe6  
file://fixdown QC:/xP  
private void fixDown(int k) { ns.[PJ"8  
int j; 4uip!@$K  
while ((j = k << 1) <= size) { #k%3Ag  
if (j < size %26amp;%26amp; queue[j] j++; Ed/@&52z0  
if (queue[k]>queue[j]) file://不用交换 }K=T B}yY  
break; M4a- +T"  
SortUtil.swap(queue,j,k); 7#Qa/[? D  
k = j; ^ K8JE,  
} (]BZ8GOx  
} ^iJMUV|  
private void fixUp(int k) { mfu >j,7l  
while (k > 1) { +NRn>1]  
int j = k >> 1; g{8 R+  
if (queue[j]>queue[k]) 0y4z`rzTn  
break; \K 01 F  
SortUtil.swap(queue,j,k); Fz+0h"  
k = j; P=& Je?  
} ?V_Qa0k  
} NF=FbvNe  
1Oo^  
} d#T8|#O"  
&?3?8Q\  
} :>lica_  
qR<  
SortUtil: `$`:PT\Zv4  
h Ia{s)  
package org.rut.util.algorithm; zY8"\ZB  
[d!C6FT  
import org.rut.util.algorithm.support.BubbleSort; X|L8s$>  
import org.rut.util.algorithm.support.HeapSort; {Ny\9r  
import org.rut.util.algorithm.support.ImprovedMergeSort; G?QFF6)}!  
import org.rut.util.algorithm.support.ImprovedQuickSort; HSx~Fs^J  
import org.rut.util.algorithm.support.InsertSort; @1P1n8mH]  
import org.rut.util.algorithm.support.MergeSort; Pi6C1uY6  
import org.rut.util.algorithm.support.QuickSort;  1$idF  
import org.rut.util.algorithm.support.SelectionSort; h~elF1dG  
import org.rut.util.algorithm.support.ShellSort; w;Qo9=-  
MAR kTxzi  
/** R_*b<~[/  
* @author treeroot h`%K \C  
* @since 2006-2-2 sXTt )J  
* @version 1.0 {549&]/o  
*/ QN-n9f8  
public class SortUtil { nvD"_.KrJ  
public final static int INSERT = 1; @Risab n  
public final static int BUBBLE = 2; c i7;v9  
public final static int SELECTION = 3; %R;cXs4r  
public final static int SHELL = 4; *D<S \6=  
public final static int QUICK = 5; h. i&[RnX  
public final static int IMPROVED_QUICK = 6; U^Z[6u  
public final static int MERGE = 7; 1s\10 hK1c  
public final static int IMPROVED_MERGE = 8; J+\F)k>r  
public final static int HEAP = 9; v\-"NHl  
_DC/`_'  
public static void sort(int[] data) { ~B(]0:  
sort(data, IMPROVED_QUICK); ENC_#- 1x  
} B<1*p,z  
private static String[] name={ dGIu0\J\$  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" n{BC m %  
}; + y.IDn^  
e+y< a~N  
private static Sort[] impl=new Sort[]{ Q77qrx3  
new InsertSort(), ![Ip)X OG  
new BubbleSort(), r %0  
new SelectionSort(), *`}_e)(k  
new ShellSort(), ts;_T..L  
new QuickSort(), />ob*sk/Y  
new ImprovedQuickSort(), 8.pz?{**T  
new MergeSort(), V"$t>pAG  
new ImprovedMergeSort(), TP{a*ke^5,  
new HeapSort() puqLXDjA/  
}; CHeG{l)<r  
$+P v fQ  
public static String toString(int algorithm){ "fpj"lf-  
return name[algorithm-1]; iLmU|jdE  
} ys#M* {?  
]3={o3[:  
public static void sort(int[] data, int algorithm) { (la<X <w  
impl[algorithm-1].sort(data); $#RD3#=?u  
} {6%uNT>|  
0[v:^H  
public static interface Sort { /#:RYM'Tu  
public void sort(int[] data); ~5!ukGK_  
} ?>%u[g   
IN%>46e`  
public static void swap(int[] data, int i, int j) { :/~vaCZ  
int temp = data; e-e{-pB6  
data = data[j]; 0'py7  
data[j] = temp; Q|ik\  
} c<D Yk f  
} JG( <  
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