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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。 &am<_Tn*3  
插入排序: U^}7DJ  
?* +>T@MH  
package org.rut.util.algorithm.support; I`+,I`~u  
"uplk8iCJ  
import org.rut.util.algorithm.SortUtil; #y&5pP:@  
/** y /vc\e  
* @author treeroot xsU%?"r  
* @since 2006-2-2 zZd.U\"2  
* @version 1.0 #)L}{mHLM-  
*/ (0@b4}Z  
public class InsertSort implements SortUtil.Sort{ I>8_gp\1  
D<70rBf2  
/* (non-Javadoc) mdbi@ms@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) BJ_"FG  
*/ jcC"vr'u|  
public void sort(int[] data) { InL_JobE8r  
int temp; %4R1rUrgt|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); id,' +<  
} `#ff`j|a  
} jBEW("4R  
} o]I8Ghk>/z  
Z6b]EcP)#  
} D\;5{,:d  
}x#e.}hf&  
冒泡排序: JS03B Itt  
?}KD<R  
package org.rut.util.algorithm.support; J>M9t%f@  
\>9^(N  
import org.rut.util.algorithm.SortUtil; l_;6xkv4  
%INkuNa8\  
/** "C3J[) qC  
* @author treeroot P];0,;nF  
* @since 2006-2-2 -F(luRBS(W  
* @version 1.0 K#6@sas  
*/ *oLDy1<  
public class BubbleSort implements SortUtil.Sort{ G'Wp)W;])\  
]>Dbta.2 7  
/* (non-Javadoc) Q e/XEW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +P 9eE,WR  
*/ {\k }:)  
public void sort(int[] data) { B&7:=t,m(  
int temp; w)&4i$Lk6  
for(int i=0;i for(int j=data.length-1;j>i;j--){ eU)QoVt  
if(data[j] SortUtil.swap(data,j,j-1); Aua}.Fl,  
} UvU@3[fw  
} CL`+\ .  
} T++q.oFc  
} r# oJch=  
|Ch ,C  
} o[RwK  
|bQF.n_  
选择排序: a~R.">>$  
HNc/p4z  
package org.rut.util.algorithm.support; LB({,0mcX  
b+gu<##  
import org.rut.util.algorithm.SortUtil; @0 x   
{ 2Ew^Li  
/** : Wtpg   
* @author treeroot MGK?FJn_?  
* @since 2006-2-2 7}Mnv WP  
* @version 1.0 ;xUo(^t7>  
*/ g[O  
public class SelectionSort implements SortUtil.Sort { 7K&Uu3m  
4o ";p}[b  
/* Cb|1Jtb  
* (non-Javadoc) 'C`Ykjf  
* 4*o?2P$Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _u;pD-  
*/ G$KQgUN~[  
public void sort(int[] data) { !?).4yr  
int temp; [+l6x1Am  
for (int i = 0; i < data.length; i++) { wKpb%3  
int lowIndex = i; KiFTj$w,  
for (int j = data.length - 1; j > i; j--) { )/[L)-~y~  
if (data[j] < data[lowIndex]) { XM"Qs.E  
lowIndex = j; j[mII5e7g  
} |c2sJyj*  
} l1`r%9gr  
SortUtil.swap(data,i,lowIndex); ^7i7yM}6(  
} h {zb)'R  
} $;$vcV9*  
jAcKSx$}y"  
} Tb;,t=;u  
1M_Vhs^  
Shell排序: yJ ]Va $M  
x![.C,O  
package org.rut.util.algorithm.support; V )UtU L  
3b#L*-  
import org.rut.util.algorithm.SortUtil; ;ThFB  
4Z=`;  
/** {98e_z w  
* @author treeroot 8lDb<i  
* @since 2006-2-2 V?0IMc  
* @version 1.0 lup2> "?*  
*/ 5}_=q;sZ  
public class ShellSort implements SortUtil.Sort{ IsJx5GO  
a9 q:e  
/* (non-Javadoc) oclU)f.,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9c*B%A8J  
*/ ")txFe  
public void sort(int[] data) { ypGt6t(;  
for(int i=data.length/2;i>2;i/=2){ .#iot(g  
for(int j=0;j insertSort(data,j,i); Og@{6>  
} $`%Om WW{  
} JKrS;J^97v  
insertSort(data,0,1); ~b X~_\  
} &%@O V:C  
G3]#Du  
/** 7TI6EKr  
* @param data Z1v~tqx  
* @param j %\|{_]h}y  
* @param i QY<5o;m`  
*/ '+vmC*-I(  
private void insertSort(int[] data, int start, int inc) { Rrl  
int temp; ZQ*Us*9I  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d+5~^\lV  
} {,*vMQ<^  
} x H=15JY1W  
} d:^B2~j  
YAeF*vP  
} _/%,cYVc8!  
.oLV\'HAR  
快速排序: W[j, QU  
i'>5vU0?3  
package org.rut.util.algorithm.support; )cP)HbOd=  
[eOv fD  
import org.rut.util.algorithm.SortUtil; v4'kV:;&  
,d*hhe  
/** 1iLU{m9  
* @author treeroot L1DH9wiQi  
* @since 2006-2-2 1kvs2  
* @version 1.0 #,6T.O  
*/ (C).Vj~  
public class QuickSort implements SortUtil.Sort{ Ar,n=obG  
4*E5@{D  
/* (non-Javadoc) fn5-Tnsq*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q TN)2G  
*/ Su? cC/  
public void sort(int[] data) { H|wP8uQC  
quickSort(data,0,data.length-1); ]{\M,txo8  
} "8cI]~ V  
private void quickSort(int[] data,int i,int j){ &|RTLGwX  
int pivotIndex=(i+j)/2; YOrq)_ l  
file://swap 7:b.c  
SortUtil.swap(data,pivotIndex,j); Sl^PELU  
ZE_  
int k=partition(data,i-1,j,data[j]); NW 2`)e'  
SortUtil.swap(data,k,j); ^eO/?D8~h  
if((k-i)>1) quickSort(data,i,k-1); b.\xPb  
if((j-k)>1) quickSort(data,k+1,j);  O&|<2Qr  
-<5{wQE;|  
} (*Q:'2e  
/** %8xRT@Q  
* @param data  |Nj6RB7  
* @param i MpZ\ j  
* @param j E!mv}  
* @return 'x"(OdM:[  
*/ 02*qf:kTnA  
private int partition(int[] data, int l, int r,int pivot) { 'U`;4AN  
do{ w=rD8 @  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); S1mMz i  
SortUtil.swap(data,l,r); vW vu&3tx  
} -]D/8,|s  
while(l SortUtil.swap(data,l,r); VHl1f7%@H  
return l; 6W=V8  
} 7C3YVm6g  
fbbbTZy  
} Dat',5  
|Rhqi  
改进后的快速排序: Q% d1n*;+  
i 61k  
package org.rut.util.algorithm.support; 4:N*C7 P  
T :m" eD;  
import org.rut.util.algorithm.SortUtil; CPRVSN0b{4  
h"0)spF"d  
/** l$EN7^%w  
* @author treeroot "opMS/a"7  
* @since 2006-2-2 u{\'/c7G  
* @version 1.0 S5y.H  
*/ \#I$H9O  
public class ImprovedQuickSort implements SortUtil.Sort { "UNFB3  
Px \cT  
private static int MAX_STACK_SIZE=4096; L*A-&9.p3  
private static int THRESHOLD=10; $$&.}}.,  
/* (non-Javadoc) b"N!#&O]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]SRpMZ  
*/ A0k?$ko  
public void sort(int[] data) { ]- `wXi"  
int[] stack=new int[MAX_STACK_SIZE]; ^ W?cuJ8  
q^EY?;Y  
int top=-1; DmLx"%H3  
int pivot; |3@DCb T  
int pivotIndex,l,r; ?&~q^t?u  
~tW~%]bs2Q  
stack[++top]=0; mOn_#2=KF  
stack[++top]=data.length-1; ja';NIO-  
!@8i(!xb  
while(top>0){ VK1B}5/  
int j=stack[top--]; }F_c0zM  
int i=stack[top--]; KbvMp1'9P  
zN|k*}j1J  
pivotIndex=(i+j)/2; SFDTHvXu#_  
pivot=data[pivotIndex]; FC, =g`Q!  
f6`GU$H  
SortUtil.swap(data,pivotIndex,j); !+^'Ej)z  
Y`bTf@EP>  
file://partition ZqVbNIY   
l=i-1; 'OziP  
r=j; =huV(THU  
do{ .)!QsBU  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ;' uQBx}  
SortUtil.swap(data,l,r); %sr- xE  
} P%(9`A  
while(l SortUtil.swap(data,l,r); AO|9H`6U6F  
SortUtil.swap(data,l,j); o5F:U4sG  
V\<2oG  
if((l-i)>THRESHOLD){ R54[U  
stack[++top]=i; Rxd4{L )n  
stack[++top]=l-1; )&7. E  
} qVE0[ve  
if((j-l)>THRESHOLD){ @q/g%-WNz  
stack[++top]=l+1; Q[7i  
stack[++top]=j; AT~,  
} E3wL n/<  
&R_7]f+%)  
} Q]xkDr?   
file://new InsertSort().sort(data); _2hLc\#  
insertSort(data); 8a P/vToa  
} mSxn7LG  
/** Ytlzn%  
* @param data $?0ch15/  
*/ gtA34iw  
private void insertSort(int[] data) { UDg' s  
int temp; K ?!qNK  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); IL %]4,  
} s51$x M  
} J @"#  
} 5h#h>0F  
.w.:o2L  
} S v>6:y9?G  
k5.5$<< T  
归并排序: "lL+Heq>V  
ns8s2kYcm  
package org.rut.util.algorithm.support; x 6`!  
}bjZeh.  
import org.rut.util.algorithm.SortUtil; FoyYWj?,R  
3N+lWuE}K  
/** cj8cV|8@  
* @author treeroot ,94<j,"  
* @since 2006-2-2 zzQWHg]/  
* @version 1.0 Lqj Qv$  
*/ fo@^=-4A-  
public class MergeSort implements SortUtil.Sort{ [s {!  
St-uE |8  
/* (non-Javadoc) y!77gx?-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WVy'f|3;  
*/ ~hLan&T  
public void sort(int[] data) { ~-BF7f 6C  
int[] temp=new int[data.length]; Yv;s3>r  
mergeSort(data,temp,0,data.length-1); 2nd n8_l  
} \j>7x  
~t`s&t'c|  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?0VR2Yb${b  
int mid=(l+r)/2; } p'ZMj&  
if(l==r) return ; ;hX(/T  
mergeSort(data,temp,l,mid); vjGQ!xF  
mergeSort(data,temp,mid+1,r); *Y m? gCig  
for(int i=l;i<=r;i++){ Dsg>~J'  
temp=data; I#M3cI!X?  
} ;!4gDvm  
int i1=l; RP&bb{Y  
int i2=mid+1; l]R0r{{  
for(int cur=l;cur<=r;cur++){ Wp=3heCa6  
if(i1==mid+1) ~f1g"   
data[cur]=temp[i2++]; f&^(f1WO  
else if(i2>r) pIJXP$v3  
data[cur]=temp[i1++]; +$,Re.WnP  
else if(temp[i1] data[cur]=temp[i1++]; O<gfZ>  
else FRBu8WW0L  
data[cur]=temp[i2++]; n{ ;j  
} 'x!\pE-  
} afEa@et'  
V)`2 Kw  
} @p+;iS1}  
!+T1kMP+l  
改进后的归并排序: 5AYOM=O]t  
Wy}I"q[~So  
package org.rut.util.algorithm.support; <\aeC2~M  
=Ph8&l7~sp  
import org.rut.util.algorithm.SortUtil; ut{T:kT  
j9+$hu#a  
/** >gk_klLh  
* @author treeroot +2~k Hrv  
* @since 2006-2-2 ,kN;d}bg  
* @version 1.0 #< im?  
*/ ETe4I`d{  
public class ImprovedMergeSort implements SortUtil.Sort { !_<6}:ZB  
ji"g)d6  
private static final int THRESHOLD = 10; 7RAB"T;?Q  
ISbs l =F  
/*  P#,u9EIJ  
* (non-Javadoc)  QHEtG2  
* f!Q\M1t)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T~TP  
*/ ggr  
public void sort(int[] data) { \hB BG8=&  
int[] temp=new int[data.length]; )O]T}eI  
mergeSort(data,temp,0,data.length-1); @;Ttdwg#J  
} =l ,P'E  
mPV<a&U  
private void mergeSort(int[] data, int[] temp, int l, int r) { kSQ8kU_w+  
int i, j, k; ':'g!b`/  
int mid = (l + r) / 2; ly[LF1t   
if (l == r) E$e7(D  
return; ~4S$+*'8  
if ((mid - l) >= THRESHOLD) 3FEJ 9ZyG  
mergeSort(data, temp, l, mid); b'H'QY   
else k*.]*]   
insertSort(data, l, mid - l + 1); I2ek`t]  
if ((r - mid) > THRESHOLD) &|>+LP@8  
mergeSort(data, temp, mid + 1, r); 24mdhT|  
else yBIlwN`kB  
insertSort(data, mid + 1, r - mid); Y?T{>"_W  
`BPTcL<W  
for (i = l; i <= mid; i++) { %`vzQt`>  
temp = data; w2 )Ro:G  
} <AHpk5Sn{  
for (j = 1; j <= r - mid; j++) { uy'ghF  
temp[r - j + 1] = data[j + mid]; W? iA P  
} Qw5nfg3T  
int a = temp[l]; Wgq|Q*  
int b = temp[r]; XH:*J+$O  
for (i = l, j = r, k = l; k <= r; k++) { z*y!Ml1  
if (a < b) { `&$8/_`  
data[k] = temp[i++]; ${+u-Wfau  
a = temp; c8qr-x1HG  
} else { 8sG3<$Z^  
data[k] = temp[j--]; $Gn.G_"v  
b = temp[j]; e%4?-{(  
} TOYK'|lwM  
} W L$^B@gXQ  
} INZVe(z  
yqK4 "F&  
/**  6 K $mW  
* @param data \u3\TJ  
* @param l Pf?kNJ*Tv)  
* @param i *dzZOe>,  
*/ YeX*IZX8  
private void insertSort(int[] data, int start, int len) { i%glQT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +8=$-E=  
} =lXj%V^8N  
} ]|;+2@kDR  
} (}"D x3K  
} ,w }Po  
'm%{Rz>j  
堆排序: R;& >PFmq  
8#I>`z^F  
package org.rut.util.algorithm.support; T:|/ux3  
eE;tiX/  
import org.rut.util.algorithm.SortUtil; -wl j;U  
0ju1>.p  
/** q!c(~UVw  
* @author treeroot ZS Med(//b  
* @since 2006-2-2 ]-PzN'5\'  
* @version 1.0 I0=_=aZO(  
*/ ]`E+HLEQ'  
public class HeapSort implements SortUtil.Sort{ ,!ZuH?Z  
2 pS<;k`  
/* (non-Javadoc) Ae)xFnuq3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4 23zX6  
*/ CU$kh z"  
public void sort(int[] data) { aM^iDJ$>  
MaxHeap h=new MaxHeap(); )oEVafNsT  
h.init(data); :fRXLe1=  
for(int i=0;i h.remove(); Vs>Pv$kW  
System.arraycopy(h.queue,1,data,0,data.length); JFq wC=-  
} Pg4&}bX:I  
C \ Cc[v  
private static class MaxHeap{ e_BG%+;G,  
vL/ 3(Bo7  
void init(int[] data){ C3AWXO ^  
this.queue=new int[data.length+1]; 2`yhxO  
for(int i=0;i queue[++size]=data; x "W~m.y$h  
fixUp(size); [+#m THX  
} e4X df>B  
} N&8TG  
HN47/]"*  
private int size=0; WxdQ^#AE  
)cf i@-J+#  
private int[] queue; g14*6O:  
#kg`rrF r  
public int get() { _iwG'a[`  
return queue[1]; 4" @<bKx  
} aCQtE,.  
a"~o'W7  
public void remove() { _8K+iqMZG  
SortUtil.swap(queue,1,size--); z,HhSW?&^  
fixDown(1); a|ftl&uk  
} KaIKb=4L|  
file://fixdown V>$( N/1  
private void fixDown(int k) { "SF0b jG9C  
int j; H$6RDMU  
while ((j = k << 1) <= size) { wNONh`b  
if (j < size %26amp;%26amp; queue[j] j++; ,'NasL8?We  
if (queue[k]>queue[j]) file://不用交换 .^YxhUH,G  
break; 5<?Ah+1  
SortUtil.swap(queue,j,k); 337.' |ZE  
k = j; ROO*/OOd  
} ?7{U=1gb$  
} | %_C$s%  
private void fixUp(int k) { *% -<Ldv  
while (k > 1) { .soCU8i3  
int j = k >> 1; }A9#3Y|F  
if (queue[j]>queue[k]) Xj?Wvt  
break; QxT'\7f  
SortUtil.swap(queue,j,k); ~C-Sr@ a?/  
k = j; *miG<  
} #ydold{F  
} #J5BHY~  
[hJ1]RW8  
} [X(m[u'%  
jzvK;*N  
} {sTf4S\S  
BU nujC  
SortUtil: ,5'o>Y  
 <,.$U\W  
package org.rut.util.algorithm; D(cD8fn,J  
b#2)"V(  
import org.rut.util.algorithm.support.BubbleSort; uLms0r\@!  
import org.rut.util.algorithm.support.HeapSort; za l]t$z>  
import org.rut.util.algorithm.support.ImprovedMergeSort; IrwQ~z3I  
import org.rut.util.algorithm.support.ImprovedQuickSort; #-az]s|N  
import org.rut.util.algorithm.support.InsertSort; ^[ae )}  
import org.rut.util.algorithm.support.MergeSort; {9IRW\kn  
import org.rut.util.algorithm.support.QuickSort; W5j wD  
import org.rut.util.algorithm.support.SelectionSort; >OG189O  
import org.rut.util.algorithm.support.ShellSort; z%&FLdXgW+  
o$_0Qs$  
/** G T>'|~e  
* @author treeroot <J%qzt}  
* @since 2006-2-2 T/$ gnn  
* @version 1.0 w+$$uz  
*/ /%$Zm^8c  
public class SortUtil { LUbhTc  
public final static int INSERT = 1; iUKjCq02  
public final static int BUBBLE = 2; U#<d",I  
public final static int SELECTION = 3; 2g(_Kdj*{  
public final static int SHELL = 4; qLR;:$]Q&8  
public final static int QUICK = 5; +in)(a.  
public final static int IMPROVED_QUICK = 6; ?pL|eS7  
public final static int MERGE = 7; cS&KD@.  
public final static int IMPROVED_MERGE = 8; O7.V>7Y9H  
public final static int HEAP = 9; UlXm4\@  
*i#2>=)  
public static void sort(int[] data) { Zy0M\-Mn  
sort(data, IMPROVED_QUICK); VPN 9 Ql=  
} zzG=!JR  
private static String[] name={ O{:{P5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Y A.&ap  
}; DJ ru|2  
B<W}:>3  
private static Sort[] impl=new Sort[]{ -:}vf?  
new InsertSort(), VPCI5mS_  
new BubbleSort(), ^} j~:EZb  
new SelectionSort(), b1xE;0uR  
new ShellSort(), Q0*E&;|  
new QuickSort(), 8X;?fjl`"  
new ImprovedQuickSort(), g$(Y\`zw  
new MergeSort(), y"?`MzcJ0  
new ImprovedMergeSort(), qxRsq&_  
new HeapSort() lL}6IZ5sb  
}; >=k7#av  
a%q,P @8  
public static String toString(int algorithm){ %PW-E($o<  
return name[algorithm-1]; :?f<tNU$  
} k|fM9E  
5 nt3gVy  
public static void sort(int[] data, int algorithm) { 1q}32^>+o  
impl[algorithm-1].sort(data); +\dVC,,=^g  
} $G=^cNB|JB  
C&O8fNB_  
public static interface Sort { AArLNXzVW  
public void sort(int[] data); l&& i`  
} 3h bHS~  
>^8O:.  
public static void swap(int[] data, int i, int j) { kV-<[5AWW  
int temp = data; Z<U,]iZB  
data = data[j]; 8~y!X0Ov!  
data[j] = temp; 6Ga'_P:  
} [[T7s(3  
} ueg%yvO  
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