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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。 ?J2A1iuq3  
插入排序: ~ p? ArZb  
#0aBQ+_8H  
package org.rut.util.algorithm.support; eTvWkpK+  
;+E]F8G9r  
import org.rut.util.algorithm.SortUtil; "Zgwe,#  
/** EGUlLqP6e  
* @author treeroot 7,+eG">0  
* @since 2006-2-2 *v+l,z4n  
* @version 1.0 oxlor,lw/  
*/ IDH~nMz  
public class InsertSort implements SortUtil.Sort{ kk-<+R2  
RTcxZ/\" #  
/* (non-Javadoc) dDpAS#'s\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (4cdkL  
*/ .Rk8qRB  
public void sort(int[] data) { .cHgYHa  
int temp; k i<X^^  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9f( X7kt  
} UrizZ 5a  
} 0]|`*f&p;  
} m7'<k1#"Y  
UJI2L-;Ul  
} FfJ;r'eGs  
MF4 (  
冒泡排序: B@&sG 5ES  
W/!P1M n  
package org.rut.util.algorithm.support; dj Ojd,  
5;/n`Bd  
import org.rut.util.algorithm.SortUtil; CW &z?Bra  
#y:D{%Wp  
/** +M0pmK!  
* @author treeroot ca_mift  
* @since 2006-2-2 Snf_{A<  
* @version 1.0 gM3:J:N  
*/ pXSShU#  
public class BubbleSort implements SortUtil.Sort{ "=Br&FN{|  
1P!)4W  
/* (non-Javadoc) kL*P 3 0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #u hUZq  
*/ ?7aZU  
public void sort(int[] data) { DO*U7V02  
int temp; -+rzc&h  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W\~^*ny P6  
if(data[j] SortUtil.swap(data,j,j-1); ,I jZQ53q~  
} V%oZT>T3  
} 0hemXvv1  
} 90<g=B  
} {-\U)&6#v  
Q M0B6F  
} t>\sP   
a_>|Ny6{  
选择排序: =b%}x >>  
\;X7DK2  
package org.rut.util.algorithm.support; +lx& $mr?  
2 |je{  
import org.rut.util.algorithm.SortUtil; A `Z/B[)  
M/?,Qii  
/** c  C3>Ff'  
* @author treeroot }<04\t?  
* @since 2006-2-2 1hG#  
* @version 1.0 WTfjn |a  
*/ m\`>N_4*9  
public class SelectionSort implements SortUtil.Sort { e2O6q05 ?Q  
nqyD>>  
/* _? gCOr  
* (non-Javadoc) xqG<R5k>>  
* bE_8NA"2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qiNVaV\wr|  
*/ 8>v_th  
public void sort(int[] data) { @sXv5kZ:  
int temp; ,|]J aZq  
for (int i = 0; i < data.length; i++) { ~#pATPW@(  
int lowIndex = i; p~$cwbQ!  
for (int j = data.length - 1; j > i; j--) { O(T5  
if (data[j] < data[lowIndex]) { $H)^o!  
lowIndex = j; *&NP?-E  
} w 9dkJo  
} N[e,){v  
SortUtil.swap(data,i,lowIndex); `6U!\D  
} ` =>}*GS  
} u:l-qD9=(  
entU+Or  
} -'&/7e6>y  
=>$)F 4LW  
Shell排序: ]||b2[*  
q)k:pQ   
package org.rut.util.algorithm.support; KNVu[P)rv  
%_OjmXOfe  
import org.rut.util.algorithm.SortUtil; ue_wuZi  
I^y<W%Et  
/** UY',n,  
* @author treeroot ^jL '*&l  
* @since 2006-2-2 R BYhU55B  
* @version 1.0 $h#sb4ek  
*/ o`bc/3!  
public class ShellSort implements SortUtil.Sort{ 2d&F<J<sU  
;k<dp7^  
/* (non-Javadoc) IzP,)!EE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :7v'[b  
*/ b:dN )m  
public void sort(int[] data) { 6_j |@  
for(int i=data.length/2;i>2;i/=2){ &$MC!iMh  
for(int j=0;j insertSort(data,j,i); n>Ff tVZNJ  
} s<O$ Y  
} R_!.vGhkN  
insertSort(data,0,1); $YSXE :  
} jeC=s~  
#{cy(&cz  
/** @aIgif+v  
* @param data 5'zXCHt  
* @param j }Le]qR9Y]  
* @param i HlGSt$woX  
*/ +,76|oMsQ%  
private void insertSort(int[] data, int start, int inc) { `b?uQ\#-M  
int temp; 7UfNz60+~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ZVjB$-do  
} W XQ@kQD  
} 7~7L5PRW  
} QN:v4,$d  
5J5?cs-!  
} w#"\*SKK  
XNz+a|cF  
快速排序: "aJHCi~l  
+9_Y0<C  
package org.rut.util.algorithm.support; &hOz(825r  
-%asHDQ{  
import org.rut.util.algorithm.SortUtil; ]  ,|,/~  
QaWS%0go  
/** =X$ieXq|  
* @author treeroot w~66G  
* @since 2006-2-2 $dL..QH^K  
* @version 1.0 #HUn~r  
*/ yXJhOCa  
public class QuickSort implements SortUtil.Sort{  W2vL<  
9K+> ;`  
/* (non-Javadoc) 2\xw2VQ@P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~7]V^tG  
*/ K`4lL5oH  
public void sort(int[] data) { {r^_g(.q  
quickSort(data,0,data.length-1); :Jd7q.  
} ^6s im2  
private void quickSort(int[] data,int i,int j){ {EgSjxfmw  
int pivotIndex=(i+j)/2; U+S=MP }:  
file://swap n]4E>/\  
SortUtil.swap(data,pivotIndex,j); =xI;D,@S  
IKD{3cVL  
int k=partition(data,i-1,j,data[j]); cn'>dz3v  
SortUtil.swap(data,k,j); |L2>|4  
if((k-i)>1) quickSort(data,i,k-1); SQodk:1)  
if((j-k)>1) quickSort(data,k+1,j); mQ[$U  
2dn^K3  
} 7({)ou x  
/** <kn 2  
* @param data -C=0Pg]ga  
* @param i `[/#, *\  
* @param j <L}@p8Lq  
* @return  ? wS}'  
*/ :j\7</uu  
private int partition(int[] data, int l, int r,int pivot) { &jqaW 2  
do{ )x.%PUA  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); iU)I"#\l'k  
SortUtil.swap(data,l,r); T ,lM(2S[  
} }3Es&p$9  
while(l SortUtil.swap(data,l,r); Z\!,f.>g  
return l; D!j/a!MaKk  
} xl}rdnf}  
S=@+qcI  
} cx\"r  
.;? Bni  
改进后的快速排序: {U5sRM|I  
pBsb>wvej  
package org.rut.util.algorithm.support; dY1t3@E  
:qzg?\(  
import org.rut.util.algorithm.SortUtil; VPMu)1={:p  
h]4xS?6O  
/** X~{6$J|]#i  
* @author treeroot ",#.?vT`  
* @since 2006-2-2 "HOZ2_(o  
* @version 1.0 ~1G^IZ6  
*/ ptCF))Zm'  
public class ImprovedQuickSort implements SortUtil.Sort { \:vF FK4a  
WogUILB  
private static int MAX_STACK_SIZE=4096; Ot=>~(u0  
private static int THRESHOLD=10; .3 EZk86  
/* (non-Javadoc) ;n&95t1$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k8gH#ENNK  
*/ &#p1ogf:  
public void sort(int[] data) { s^k G]7  
int[] stack=new int[MAX_STACK_SIZE]; omG2p  
&Vlno*  
int top=-1; eg[EFI.h  
int pivot; t@%w:*&  
int pivotIndex,l,r; ^~4]"J};M  
z/7q#~J,  
stack[++top]=0; 5P,&VB8L  
stack[++top]=data.length-1; V?mP7  
+R'8$  
while(top>0){ PRh C1#  
int j=stack[top--]; aV;|2}q "  
int i=stack[top--]; w-|Rb~XT h  
@|gG3  
pivotIndex=(i+j)/2; _>gz&  
pivot=data[pivotIndex]; ]ch=@IV  
C,|&  
SortUtil.swap(data,pivotIndex,j); GS;GJsAs  
pc`P;Eui  
file://partition j<AOC?  
l=i-1; [$y(>] ~.  
r=j; dX[I :,z*  
do{ j=sfE qN).  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); LuS@Kf8N+  
SortUtil.swap(data,l,r); bZowc {!\  
} *xnZTj:  
while(l SortUtil.swap(data,l,r); SmXoNiM"y  
SortUtil.swap(data,l,j); F`D$bE;|  
h:Pfiw]  
if((l-i)>THRESHOLD){ T3 w%y`K  
stack[++top]=i; *C*J1JYp+  
stack[++top]=l-1; DB}Uzw|  
} y0%@^^-Ru  
if((j-l)>THRESHOLD){ } z'Jsy[s  
stack[++top]=l+1; [LVXXjkFI  
stack[++top]=j; |$WHw*F^  
} 9*"  
1?'4%>kp  
} (UkP AE  
file://new InsertSort().sort(data); pqG> |#RG  
insertSort(data); hh;kBv07o  
} )5|9EXh  
/** u>>|ZPe  
* @param data 3vrVX<_  
*/ **q8vhJM  
private void insertSort(int[] data) { 0]d;)_`@  
int temp; [YvS#M3T  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); M9"Bx/  
} a;o0#I#Si  
} E,i^rAm  
} J*@pM  
I;4quFBlMu  
} aCZ0-X?c  
[RF,0>^b  
归并排序: A7 RI&g v5  
*HrEh;3^J  
package org.rut.util.algorithm.support; }*x1e_m}H  
BM :x`JY  
import org.rut.util.algorithm.SortUtil; N*gJu  
I~7iIUD  
/** E '6>3n  
* @author treeroot "L>'X22ed  
* @since 2006-2-2 N{Sp-J>  
* @version 1.0 ;4 O[/;i  
*/ OVLVsNg  
public class MergeSort implements SortUtil.Sort{ HLyA zB~r  
[6VB&   
/* (non-Javadoc) Z`TfS+O6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1/$PxQ  
*/ O-, "/Z  
public void sort(int[] data) { * + T(i  
int[] temp=new int[data.length]; ! ._q8q\  
mergeSort(data,temp,0,data.length-1); &}DfIP<  
} :zL)O  
,{*g Q%7  
private void mergeSort(int[] data,int[] temp,int l,int r){ 2 ZK]}&yC  
int mid=(l+r)/2; Ip8ml0oG  
if(l==r) return ; ]J Yz(m[   
mergeSort(data,temp,l,mid); +C% 6jGGh  
mergeSort(data,temp,mid+1,r); & bTCTDZh  
for(int i=l;i<=r;i++){ )zL@h  
temp=data; dGZie .Zx  
} o2fih%p?1  
int i1=l; KjGu !B  
int i2=mid+1; a>j}@8[J  
for(int cur=l;cur<=r;cur++){ ]B/> =t"E  
if(i1==mid+1) _H$Lu4b)N  
data[cur]=temp[i2++]; u^MKqI  
else if(i2>r) ~&Z>fgOTJ  
data[cur]=temp[i1++]; J3yK^@&&  
else if(temp[i1] data[cur]=temp[i1++]; e#[Klh$]EW  
else sH6;__e  
data[cur]=temp[i2++]; (.-4Jn  
} -XYvjW,|  
} O84]J:b  
hQ#e;1uD  
} j\C6k  
$>)0t@[f  
改进后的归并排序: 7. F'1oEf  
+Tum K.  
package org.rut.util.algorithm.support; oN032o?S  
TgkVd]4%  
import org.rut.util.algorithm.SortUtil; 6]7csOE  
TFXBN.?9T  
/** 5FZw (E  
* @author treeroot 'jt7H{M  
* @since 2006-2-2 9E7G%-  
* @version 1.0 t}+/GSwT  
*/ TpU\IQ  
public class ImprovedMergeSort implements SortUtil.Sort { rC8p!e.yL  
#-yCR  
private static final int THRESHOLD = 10; Lx,=Up.  
|k.'w<6mb9  
/* ]p!{   
* (non-Javadoc) xXJ*xYn "}  
* eiK_JPFA-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *PF<J/Pr  
*/ .n<vhLDQn  
public void sort(int[] data) { $zP5Hzx  
int[] temp=new int[data.length]; 2yA)SGri  
mergeSort(data,temp,0,data.length-1); U[wx){[|  
} bq/Aopfr  
um,f!ho-U  
private void mergeSort(int[] data, int[] temp, int l, int r) { YTTyMn  
int i, j, k; %IsodtkDu  
int mid = (l + r) / 2; f.w",S^  
if (l == r) D:T]$<=9  
return; i{^T;uAE  
if ((mid - l) >= THRESHOLD) wOAR NrPx2  
mergeSort(data, temp, l, mid); o/N!l]r  
else kcfT|@:MK"  
insertSort(data, l, mid - l + 1); dlYpbw}W&<  
if ((r - mid) > THRESHOLD) AE rPd)yk0  
mergeSort(data, temp, mid + 1, r); =|oi0  
else %]+R>+  
insertSort(data, mid + 1, r - mid); "3RFy i  
fZiAl7b!  
for (i = l; i <= mid; i++) { J?O0ixU  
temp = data; 01r%K@ xX\  
} ~i|6F~%3  
for (j = 1; j <= r - mid; j++) { R XCn;nM4  
temp[r - j + 1] = data[j + mid]; )] @h}K}  
} 'rB% a<  
int a = temp[l]; ?[JP[ qS  
int b = temp[r]; J*;RL`  
for (i = l, j = r, k = l; k <= r; k++) { nH#>_R (  
if (a < b) { C hF~  
data[k] = temp[i++]; Y-ao yoNS  
a = temp; UGAV"0  
} else { t6"%u3W8M  
data[k] = temp[j--]; C:B7%<  
b = temp[j]; KlT:&1SB9  
} `nF SJlr&  
} 7ws<' d7/  
} R*r4)+gd  
UF+Qx/4h0  
/** 2>o[  
* @param data *2h%dT:,%  
* @param l G4(R/<J,BQ  
* @param i ?Bf>G]zx  
*/ Yc[umn^K  
private void insertSort(int[] data, int start, int len) { 3RaduN]  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); AR [m+E  
} u`'" =Y_E  
} E0ED[d,  
} ^8 VW$}  
} KW:N 6w  
I[?\ Or  
堆排序: nXT`7  
yXU.PSG*  
package org.rut.util.algorithm.support; nQc,^A)I  
f"s_dR  
import org.rut.util.algorithm.SortUtil; \]> YLyG  
6q^$}eOt  
/** FJ3S  
* @author treeroot @1*^ttC  
* @since 2006-2-2 3L&:  
* @version 1.0 3m>YR-n$  
*/ oh{>nwH  
public class HeapSort implements SortUtil.Sort{ 7DAP_C  
w5>[hQR\  
/* (non-Javadoc) ||:> &  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %0GwO%h},  
*/ \OW:-  
public void sort(int[] data) { 8 W  
MaxHeap h=new MaxHeap(); qPPe)IM'Sc  
h.init(data); =mYf] PIX  
for(int i=0;i h.remove(); xSudDhRP  
System.arraycopy(h.queue,1,data,0,data.length); Xl4}S"a  
} cKVFykwM  
owIpn=8|Q  
private static class MaxHeap{ fOi Rstci  
]?}>D?5  
void init(int[] data){ VlV X  
this.queue=new int[data.length+1]; T<n`i~~  
for(int i=0;i queue[++size]=data; xX&B&"]5  
fixUp(size); Jj=qC{]  
} KZ5%q.  
} }PI:O%N;  
 I0mp[6  
private int size=0; 8"&!3_  
d27q,2f!  
private int[] queue; nI3p`N8j*  
*'?ZG/ (  
public int get() { Kg 6J:HD49  
return queue[1]; s,Gl{  
} ek&~A0k_o  
|.@!CqJ  
public void remove() { T1C_L?L  
SortUtil.swap(queue,1,size--); :Q`Of}#  
fixDown(1); Q+Bl1xl  
} 'APx  
file://fixdown JSB+g;  
private void fixDown(int k) { H@(O{ 9Yl;  
int j; 7Yg1z%%U  
while ((j = k << 1) <= size) { v]cw})l  
if (j < size %26amp;%26amp; queue[j] j++; LGhK)]:  
if (queue[k]>queue[j]) file://不用交换 x'L=p01  
break; 5len} ){  
SortUtil.swap(queue,j,k); #aX#gh}1  
k = j; K+~?yOQj  
} FxlH;'+Q  
} /NQrE#pb  
private void fixUp(int k) { We y*\@  
while (k > 1) { RsDSsux  
int j = k >> 1; ,NGHv?.N  
if (queue[j]>queue[k]) #z P-, 2!r  
break; 5qM$ahN3wH  
SortUtil.swap(queue,j,k); lc <V_8  
k = j; :u7BCV|yr  
} $z_yx `5  
} :aOR@])>o  
^=x/:0  
} ;n't:yQW  
f9#zV2ke]  
} )5@P|{FF  
ykC3Z<pI.  
SortUtil: E+Bc>xl@ m  
~R;/u")@e  
package org.rut.util.algorithm; )1 -<v);  
XHA|v^  
import org.rut.util.algorithm.support.BubbleSort; ;y(;7n_ a  
import org.rut.util.algorithm.support.HeapSort; 9JdJn>  
import org.rut.util.algorithm.support.ImprovedMergeSort; k[8F: T-  
import org.rut.util.algorithm.support.ImprovedQuickSort; {H/%2  
import org.rut.util.algorithm.support.InsertSort; I7_8oq\3D  
import org.rut.util.algorithm.support.MergeSort; qIJc\,'  
import org.rut.util.algorithm.support.QuickSort; G y[5'J`  
import org.rut.util.algorithm.support.SelectionSort; _|\X8o_  
import org.rut.util.algorithm.support.ShellSort; 0f5 ag&  
W/UA%We3+L  
/** >T;!Z5L1  
* @author treeroot $T K*w8@:  
* @since 2006-2-2 z6w'XA1_+t  
* @version 1.0 "" UyfC[  
*/ !Q"L)%)'A  
public class SortUtil { -Y524   
public final static int INSERT = 1; }aOqoi7w  
public final static int BUBBLE = 2; 8Ay7I  
public final static int SELECTION = 3; 8(Az/@=n  
public final static int SHELL = 4; ~ g!!#ad  
public final static int QUICK = 5; p*PzfSLN  
public final static int IMPROVED_QUICK = 6; N~]qQ oj,  
public final static int MERGE = 7; +Kgl/Wg%  
public final static int IMPROVED_MERGE = 8; 62ru%<x=  
public final static int HEAP = 9; lZAGoR;0Ra  
v(;yy{>8"  
public static void sort(int[] data) { ]?]M5rP  
sort(data, IMPROVED_QUICK); Z=8&`  
} 6-\Mf:%B  
private static String[] name={ -,/7u3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0y|1@CS  
}; ';G/,wB?`  
4AL,=C3  
private static Sort[] impl=new Sort[]{ PV\J] |d,%  
new InsertSort(), {- I+  
new BubbleSort(), j)/Vtf  
new SelectionSort(), jvQ^Vh!mC  
new ShellSort(), *m]Y6  
new QuickSort(), {*;8`+R&  
new ImprovedQuickSort(), K\ Wzh;  
new MergeSort(), g#i~^4-1  
new ImprovedMergeSort(), 3chx 4  
new HeapSort() WzFXF{(  
}; _xAru9=n^  
vk|f"I  
public static String toString(int algorithm){ B{\Y~>]Pj  
return name[algorithm-1]; l1]N&jN{  
} ;#zteqn  
4Yvz-aSyO  
public static void sort(int[] data, int algorithm) { c9c]1XJ  
impl[algorithm-1].sort(data); #jBmWaP.  
} ?8$`GyjS  
3~fi#{  
public static interface Sort { :JSxsA6 k  
public void sort(int[] data); 3F"vK  
} ;q'-<O   
D,=~7/g  
public static void swap(int[] data, int i, int j) { 8\;, d  
int temp = data; NUM!'+H_h  
data = data[j]; oC" [rn  
data[j] = temp; s2L]H  
} 5 v.&|[\k  
} A'CD,R+gR  
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