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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。 mN-O{k0\  
插入排序: e"1mdw"  
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package org.rut.util.algorithm.support; wsdZwik  
sudh=_+>  
import org.rut.util.algorithm.SortUtil; &$ }6:  
/** MoxWnJy}  
* @author treeroot dkC_Sh{  
* @since 2006-2-2 #0) TS  
* @version 1.0 6l,6k~Z9  
*/ O0y0'P-rJq  
public class InsertSort implements SortUtil.Sort{ 75>%!mhM  
Y"ta`+ VJ  
/* (non-Javadoc) `pv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `D3q!e  
*/ M*'8$|Z  
public void sort(int[] data) { ;\"5)S  
int temp; 5%wA"_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9t`yv@.>N  
} ty[%:eG#  
} Ud"_[JtGM  
} <|'ETqP<+  
mR2"dq;U  
} #Br`;hL<T  
ZYB5s~;eB"  
冒泡排序: Gy+c/gK  
f2tCB1[D+  
package org.rut.util.algorithm.support; +%<kcc3  
ZK ?V{X{";  
import org.rut.util.algorithm.SortUtil; |5(CzXR]  
F.(W`H*1+  
/** pv4#`.m  
* @author treeroot 3]iw3M  
* @since 2006-2-2 l_((3e[)  
* @version 1.0 nYC.zc*ox  
*/ Nnn~7  
public class BubbleSort implements SortUtil.Sort{ -^np"Jk  
V6>{k_0{V  
/* (non-Javadoc) 9k4z__Ke  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2./ z6jXW_  
*/ ?&6|imPE  
public void sort(int[] data) { + S5uxO  
int temp; .R)Ho4CE  
for(int i=0;i for(int j=data.length-1;j>i;j--){ F" G+/c/L  
if(data[j] SortUtil.swap(data,j,j-1); 2/ )~$0  
} &]f8Xd  
} zWN]#W`  
} !#1UTa  
} >y}> 5kv  
*?Oh%.HgF  
} fyZtwl@6w#  
Q(WfWifu-|  
选择排序: }If,O  
"T8b.ng  
package org.rut.util.algorithm.support; V[8!ymi0  
%YuFw|wO  
import org.rut.util.algorithm.SortUtil; i'ZnU55=  
/ H GPy  
/** t}K8{ V  
* @author treeroot E)'T;%  
* @since 2006-2-2 7 }t=Lx(  
* @version 1.0 Q>z (!'dw  
*/ uYE"O UNWL  
public class SelectionSort implements SortUtil.Sort { <0/)v J- 9  
1[Q~&QC  
/* 3;//o<  
* (non-Javadoc) @q|c|X:I  
* )Zvn{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HT_nxe`E  
*/ wG 5H^>6u>  
public void sort(int[] data) { \  6Y%z  
int temp; vQ5rhRG)E  
for (int i = 0; i < data.length; i++) { YRaF@?^Gn  
int lowIndex = i; 4SkCV  
for (int j = data.length - 1; j > i; j--) { efyGjfoO  
if (data[j] < data[lowIndex]) { Z1\=d=  
lowIndex = j; e9F+R@8  
} Fp+fZU  
} f 0/q{*  
SortUtil.swap(data,i,lowIndex); ^Y"|2 :  
} C61E=$  
} TaG (sRI  
9 KU3)%U  
} U@".XIDQ  
W 6R/{H  
Shell排序: VkC1\L6  
gue~aqtJ  
package org.rut.util.algorithm.support; A2nL=9~   
O2~Q(q'   
import org.rut.util.algorithm.SortUtil; x,<|<W5<%  
Gbb*p+ (  
/** wem hP8!gc  
* @author treeroot dsZ-|C  
* @since 2006-2-2 KctbNMU]k  
* @version 1.0 2 o5u02x  
*/ `$] ZT>&  
public class ShellSort implements SortUtil.Sort{ \uOR1z  
_BND{MsX  
/* (non-Javadoc) _y9NDLRs8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JPe<qf-  
*/ ,/-DAo~O  
public void sort(int[] data) { Zu ![v0  
for(int i=data.length/2;i>2;i/=2){ RPTIDA))  
for(int j=0;j insertSort(data,j,i); fTI~wF8!  
} &A&2z l %#  
} gGbJk&E  
insertSort(data,0,1); pq,8z= Uf  
}  LII4sf]  
JF9r[%  
/** U;]h/3P  
* @param data fp$U%uj  
* @param j 2()/l9.O'  
* @param i Y-v6M3$  
*/ ^B'N\[  
private void insertSort(int[] data, int start, int inc) { dJ7!je1N*  
int temp; ^Zq3K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LHusy;<E[  
} U1pwk[  
} pE]s>T a  
} (+9^)No  
o[k,{`M0  
} Uclta  
KCS},X_  
快速排序: NY%=6><t!  
\x~},!l  
package org.rut.util.algorithm.support; Z7=k$e  
b59NMGn  
import org.rut.util.algorithm.SortUtil; MgQb" qx  
gYa (-o  
/** l7S&s&W @  
* @author treeroot  tZN'OoZ  
* @since 2006-2-2 g$9s} \6B  
* @version 1.0 C <q@C!A  
*/ N'M+Z=!  
public class QuickSort implements SortUtil.Sort{ j.g9O]pi  
[_3L  
/* (non-Javadoc) /~_,p,:aP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -Z&9pI(3R~  
*/ 6cTd SE  
public void sort(int[] data) { K7] +. f  
quickSort(data,0,data.length-1); =.6JvX<d1*  
} j<'ZO)q`Q  
private void quickSort(int[] data,int i,int j){ Qg gx:  
int pivotIndex=(i+j)/2; JX2@i8[~  
file://swap ivP#qM1*;  
SortUtil.swap(data,pivotIndex,j); njBK{  
P(~vqo>!  
int k=partition(data,i-1,j,data[j]); rL<a^/b/=  
SortUtil.swap(data,k,j); :eW`El  
if((k-i)>1) quickSort(data,i,k-1); f]]UNS$AYQ  
if((j-k)>1) quickSort(data,k+1,j); 2sahb#e )  
])$Rw $`w  
} }:4b_-&Q5  
/** o_on/{qz  
* @param data 4Y4QR[>IU3  
* @param i _Rm1-,3  
* @param j '( yjq<  
* @return M%qHf{ B  
*/ NVq3h\[X  
private int partition(int[] data, int l, int r,int pivot) { VL| q`n  
do{ +|TFxaVz  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); RP~ hi%A  
SortUtil.swap(data,l,r); fHR^?\VVp  
} Ig"Qw vR  
while(l SortUtil.swap(data,l,r); ^Qa!{9o[  
return l; xHi.N*~D  
} m}o4Vr;"  
;]sbz4?  
} &u~#bDh  
clO9l=g  
改进后的快速排序: (|.rEaTA[1  
oS Apa  
package org.rut.util.algorithm.support; <t"|wYAa_  
IO}53zn<l  
import org.rut.util.algorithm.SortUtil; ><3!J+<?  
D:vX/mf;7  
/** ~mK|~x01@  
* @author treeroot 9 Aq\1QC  
* @since 2006-2-2 !OL[1_-4|K  
* @version 1.0 Y>To k|PV  
*/ "=3bL>\<  
public class ImprovedQuickSort implements SortUtil.Sort { %Ae43  
:|PgGhW  
private static int MAX_STACK_SIZE=4096; |%c"Avc  
private static int THRESHOLD=10; z"j]m_m H  
/* (non-Javadoc) F<LRo}j"9Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *^Xtorqo  
*/ xmBGZ4f%  
public void sort(int[] data) { B4 +A  
int[] stack=new int[MAX_STACK_SIZE]; U)iq  
^QTtCt^:  
int top=-1; fsz:A"0H  
int pivot; Y]])Tq;h5  
int pivotIndex,l,r; ,AEaW  
(hFyp}jkk  
stack[++top]=0; r%UsUj  
stack[++top]=data.length-1; mo  
m%)Cw)t 7  
while(top>0){ e]q(fPK  
int j=stack[top--]; WI}cXXUKm0  
int i=stack[top--]; .LA?2N  
{?hpW+1,#  
pivotIndex=(i+j)/2; ds;c\x  
pivot=data[pivotIndex]; =--oH'P=M  
L wP  
SortUtil.swap(data,pivotIndex,j); UNJAfr P  
83g$k 9lG.  
file://partition (,OF<<OH  
l=i-1; $i]G'fj  
r=j; gUHx(Fi[4  
do{ fF]w[lLDv  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); g`r4f%O  
SortUtil.swap(data,l,r); :jr`}Z%;y  
} Y4Y~e p  
while(l SortUtil.swap(data,l,r); nR`)kORc  
SortUtil.swap(data,l,j); =>htX(k}  
lFZl}x  
if((l-i)>THRESHOLD){ _:7:ixN[Ie  
stack[++top]=i; kcG_ n  
stack[++top]=l-1; FW)VyVFmk  
} 14z ?X%  
if((j-l)>THRESHOLD){ EFn[[<&><t  
stack[++top]=l+1; E4, J"T|@  
stack[++top]=j; &M{;[O{  
} 9Yd"Y-   
\[&&4CN{  
} RmRPR<vGW  
file://new InsertSort().sort(data); qT~a`ou:  
insertSort(data); \wF- [']N  
} W5,&*mo  
/** qNi`OVh&  
* @param data MFQyB+Z  
*/ IxaF *4JG  
private void insertSort(int[] data) { u~7fK  
int temp; E<sd\~~A:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JA~q}C7A7o  
} Lu CiO  
} X^Fc^U8  
} ?&?5x%|.<  
qs!A)H#  
} M;9s  
*Gul|Lp$<I  
归并排序: ]-;MY@  
spT$}F2n  
package org.rut.util.algorithm.support; >R}G  
U^8S@#1Q  
import org.rut.util.algorithm.SortUtil; }#h`1 uV  
M $f6. j  
/** h43py8v  
* @author treeroot L7]o^p{g}Q  
* @since 2006-2-2 qe 'RvBz  
* @version 1.0 Q^bYx (r5w  
*/ ]=ADX}  
public class MergeSort implements SortUtil.Sort{ .$fSWlM;  
{gh<SZsE  
/* (non-Javadoc) AuT:snCzR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P$Q,t2$A  
*/ zx5#eMD  
public void sort(int[] data) { ne: 'aq  
int[] temp=new int[data.length]; b]  
mergeSort(data,temp,0,data.length-1); C\4d.~C:w3  
} N\|BaZ%>|  
jZD)c_'U  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;;6$d{  
int mid=(l+r)/2; 0SQrz$y  
if(l==r) return ; JIIc4fyy8s  
mergeSort(data,temp,l,mid); !_FTy^@c2  
mergeSort(data,temp,mid+1,r); zz!jt A  
for(int i=l;i<=r;i++){ 1R;@v3  
temp=data; NcBz("  
} a@J/[$5  
int i1=l; TOhWfl;  
int i2=mid+1; ?GlXxx=eV  
for(int cur=l;cur<=r;cur++){ zdw* ?C  
if(i1==mid+1) OADW;fj  
data[cur]=temp[i2++]; /EG'I{oC  
else if(i2>r) bYoBJ #UX  
data[cur]=temp[i1++]; uq ;yR[w"  
else if(temp[i1] data[cur]=temp[i1++]; c/igw+L()  
else TyjZ  
data[cur]=temp[i2++]; jZC[_p;  
} I&m' a  
} _-3n'i8  
PfyJJAQ[  
} YWs?2I  
Rj4C-X 4=  
改进后的归并排序: ([ -i5  
) P>/g*  
package org.rut.util.algorithm.support; }Z{FPW.QK  
#4lIna%VX  
import org.rut.util.algorithm.SortUtil; {z\K!=X/  
(^(l=EN-<  
/** o.kDOqd  
* @author treeroot }i,r{Y]s]  
* @since 2006-2-2 V[uSo$k+>  
* @version 1.0 nmts% u  
*/ %<x! mE x  
public class ImprovedMergeSort implements SortUtil.Sort { % 1$#fxR  
P%H  Dz  
private static final int THRESHOLD = 10; Fe4>G8uuwn  
Mm(#N/  
/* %1:caa@_p  
* (non-Javadoc) -- FzRO{D  
* JSi0-S[Y{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k_!e5c  
*/ V.z8 ]iG  
public void sort(int[] data) { wMj #.Jh  
int[] temp=new int[data.length]; ]ly" K!1,  
mergeSort(data,temp,0,data.length-1); GGhk~H4OP  
} 9^ZtbmUf  
#4b]j".P!n  
private void mergeSort(int[] data, int[] temp, int l, int r) { TYb$+uY  
int i, j, k; `CH,QT7e  
int mid = (l + r) / 2; n=bdV(?4  
if (l == r) 7KX27.~F  
return; o{! :N>(  
if ((mid - l) >= THRESHOLD) ! xG*W6IT  
mergeSort(data, temp, l, mid); \Dy|}LE  
else A+gS'DZ9C  
insertSort(data, l, mid - l + 1); -F[@)$L  
if ((r - mid) > THRESHOLD) QF\nf_X  
mergeSort(data, temp, mid + 1, r); Ei):\,Nv  
else FOk;=+  
insertSort(data, mid + 1, r - mid); @aZTx/  
P!E2.K,  
for (i = l; i <= mid; i++) { 5K2K'ZkI  
temp = data; {x.0Yh7  
} nvT@ 'y+  
for (j = 1; j <= r - mid; j++) { )t"-#$,@  
temp[r - j + 1] = data[j + mid]; IlB8~{p_  
} L/r_MtN  
int a = temp[l]; &=BzsBh  
int b = temp[r]; ?q9] H5\  
for (i = l, j = r, k = l; k <= r; k++) { [#q]B=JB  
if (a < b) { -PAEJn5$O  
data[k] = temp[i++]; |Ia9bg'1U  
a = temp; p/?o^_s  
} else { 8"9&x} tl-  
data[k] = temp[j--]; uT4|43< G  
b = temp[j]; nAEyL+6U  
} M@{#yEP  
} P|bow+4  
} -]HZ?@  
* l1*zaE  
/** ;_)~h$1%=  
* @param data 3g;,  
* @param l +Gt9!x}#e  
* @param i 1QG q;6\  
*/ ]FZPgO'G  
private void insertSort(int[] data, int start, int len) { y'`/^>.  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1);  '2*OrY  
} a @2fJ}  
} [i /!ovcY  
} H{vKk  
} lQHF=Jex  
LWT\1#  
堆排序: L|T?,^  
Rbf6/C  
package org.rut.util.algorithm.support; , :#bo]3  
32<D9_  
import org.rut.util.algorithm.SortUtil; .{h"0<x  
BZ?Ck[E]Z  
/** |cf-S8pwY  
* @author treeroot TXmS$q   
* @since 2006-2-2 d@$| zr6  
* @version 1.0 pWGR #x'  
*/ ]`|$nU}v  
public class HeapSort implements SortUtil.Sort{ w,LmAWZ4Y  
QMsq4yJ)%  
/* (non-Javadoc) fUkqhqe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0X5cn 0L^  
*/ <.QaOLD  
public void sort(int[] data) {  7;fC%Fq  
MaxHeap h=new MaxHeap(); eZa*WI=  
h.init(data); #f2k*8"eAF  
for(int i=0;i h.remove(); 4SJ aAeIZ  
System.arraycopy(h.queue,1,data,0,data.length); OL>>/T  
} *x|%Nua"  
7@fS2mu  
private static class MaxHeap{ #5@(^N5p`  
lx%c&~.DiB  
void init(int[] data){ M\C9^DX{  
this.queue=new int[data.length+1]; Nrr}) g  
for(int i=0;i queue[++size]=data; Ak9{P`  
fixUp(size); Z^&G9I#  
} B>^6tdz  
} n[iwi   
^?`fN'!p  
private int size=0; Swhz\/u9  
9j>2C  
private int[] queue; vn^O m-\  
G<$:[ +w  
public int get() { @-!P1]V|  
return queue[1]; #:gd9os :  
} )=[\YfK  
T(D6'm:X  
public void remove() { @(sz"  
SortUtil.swap(queue,1,size--); <eG|`  
fixDown(1); f=F:Af!  
} A*y4<'}<  
file://fixdown 2d[q5p  
private void fixDown(int k) { L/tpT?$fi  
int j; ?$f.[;mh  
while ((j = k << 1) <= size) { 4H-eFs%5  
if (j < size %26amp;%26amp; queue[j] j++; yxt"vm;  
if (queue[k]>queue[j]) file://不用交换 L@S\ rImw  
break; 4>jHS\jc  
SortUtil.swap(queue,j,k); O2{["c e  
k = j; SH?McBxS  
} #Q8_:dPY  
} f1 x&Fk  
private void fixUp(int k) { .5 . (S^u  
while (k > 1) { Z@0tZ^V{  
int j = k >> 1; ?.46X^  
if (queue[j]>queue[k]) XjGS.&'I  
break; >&PM'k  
SortUtil.swap(queue,j,k); jq,M1  
k = j; &j F'2D^_  
} *-nO,K>y`  
} \)~d,M}kK  
el9P@r0  
} mAW.p=;  
r N$0qo  
} g-sNYd%?a  
/4an@5.\C  
SortUtil: p3=Py7iz  
m)tu~ neM  
package org.rut.util.algorithm; JQ1MuE'  
]/=RABi  
import org.rut.util.algorithm.support.BubbleSort; S0^a)#D &  
import org.rut.util.algorithm.support.HeapSort; 7S a9  
import org.rut.util.algorithm.support.ImprovedMergeSort; C t,p  
import org.rut.util.algorithm.support.ImprovedQuickSort; ^^N|:80  
import org.rut.util.algorithm.support.InsertSort; Jl~ *@0(  
import org.rut.util.algorithm.support.MergeSort; ( eTrqI`  
import org.rut.util.algorithm.support.QuickSort; zC2:c"E I  
import org.rut.util.algorithm.support.SelectionSort; BPO5=]W 7  
import org.rut.util.algorithm.support.ShellSort; X0;u7g2Yz  
=0ZRG p  
/** !?P8[K  
* @author treeroot xuK"pS  
* @since 2006-2-2 \?xM% (:<Q  
* @version 1.0 V"YeF:I  
*/ A(FnU:  
public class SortUtil { FCE y1^u  
public final static int INSERT = 1; %~!4DXrMk  
public final static int BUBBLE = 2; 1+FVM\<&  
public final static int SELECTION = 3; q?}C`5%D  
public final static int SHELL = 4;  k[r^@|  
public final static int QUICK = 5; vE:*{G;Y  
public final static int IMPROVED_QUICK = 6; keAoJeG,J  
public final static int MERGE = 7; EQm{qc;  
public final static int IMPROVED_MERGE = 8; &:  Q'X  
public final static int HEAP = 9; a^R?w|zCX  
Bh3F4k2bg7  
public static void sort(int[] data) { }>@\I^Xm,  
sort(data, IMPROVED_QUICK); !Km[Qw k-  
} eYUb>M)  
private static String[] name={ V]zc-gYI  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" &<F9Z2^  
}; l_h:S`z.  
:ppaq  
private static Sort[] impl=new Sort[]{ F)^0R%{C  
new InsertSort(), :21d  
new BubbleSort(), xi5"?*&Sb  
new SelectionSort(), <V&0GAZ  
new ShellSort(), oYqH l1cs  
new QuickSort(), ;,f\Wf"BW  
new ImprovedQuickSort(), ~|+ ~/  
new MergeSort(), #PkuCWm6  
new ImprovedMergeSort(), W@d&X+7e  
new HeapSort() QLd*f[n  
}; m!<HZvq?vf  
N'`X:7fN  
public static String toString(int algorithm){ 'ITq\1z  
return name[algorithm-1]; Q~,Mzt"}W  
} P<PZ4hNx  
sA2-3V<t8  
public static void sort(int[] data, int algorithm) { *] i hc u  
impl[algorithm-1].sort(data); jWrU'X  
} X)b$CG  
P[3i!"O>  
public static interface Sort { =~1EpZ  
public void sort(int[] data); r:H]`Uo'r  
} .&^p@A~  
6w^P{%ul  
public static void swap(int[] data, int i, int j) { (/]'e}  
int temp = data; Z8SwW<{ $  
data = data[j];  2v{WX  
data[j] = temp; FLi'}C  
} 6<lo0PQ"Z  
} x92^0cMf  
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