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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。 it77x3Mm F  
插入排序: #TS:| =  
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package org.rut.util.algorithm.support; Qh3BI?GZ'3  
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import org.rut.util.algorithm.SortUtil; wwUa+6?  
/** Ce_k&[AJF  
* @author treeroot _Oc5g5_{  
* @since 2006-2-2 -?nr q <3  
* @version 1.0 O/ybqU\7  
*/ t\S=u y  
public class InsertSort implements SortUtil.Sort{ xl>8B/Zmf#  
kn %i#Fz  
/* (non-Javadoc) Y].,}}9k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8}C_/qeM  
*/ , Ox$W  
public void sort(int[] data) { 7 x#QkImQ  
int temp; []OmztB  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W-D{ cU  
} XtCG.3(LY  
} _xY dnTEl  
} p4-UW;Xu  
n37P$0  
} :<gC7UW  
[3D*DyQt  
冒泡排序: s_o{w"3X  
z;iNfs0i$  
package org.rut.util.algorithm.support; wAD%1;  
l$Y*ii  
import org.rut.util.algorithm.SortUtil; =hY9lxW  
aGBUFCCa  
/** u43W.4H13  
* @author treeroot [|&#A;{F#  
* @since 2006-2-2 G9_7jX*  
* @version 1.0 \~X:ffb =  
*/ f*o+g:]3  
public class BubbleSort implements SortUtil.Sort{ r:3h 2J[_  
\:-"?  
/* (non-Javadoc) /L{V3}[j  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fb+_]{7g  
*/ *q;u%; 4  
public void sort(int[] data) { xB`j* %  
int temp; }i$ER,hXh  
for(int i=0;i for(int j=data.length-1;j>i;j--){ QZ& 4W  
if(data[j] SortUtil.swap(data,j,j-1); WA((>Daf]  
} z94#:jPmG  
} k:[T#/;  
} V!\'7-[R  
} InA=ty]"_U  
|W*#N8I P  
} ?`T Q'#P`  
L8,/  
选择排序: 0@yw#.j  
Q@ua G,6  
package org.rut.util.algorithm.support; >npTUOGL=n  
.fAHP 5-  
import org.rut.util.algorithm.SortUtil; X4eoE  
MFeY}_d<  
/** CT?4A1[aD  
* @author treeroot 8'qq!WR~  
* @since 2006-2-2 /Bq4! n+  
* @version 1.0 w"{mDL}c  
*/ AZ>F+@d  
public class SelectionSort implements SortUtil.Sort { S-5O$EnD  
(T!#7  
/* nT :n>ja  
* (non-Javadoc) W#&BU-|2  
* &yRR!1n)H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?U+nR/H:6  
*/ DGbEQiX$\  
public void sort(int[] data) { _9yW; i-  
int temp; 2q4-9vu  
for (int i = 0; i < data.length; i++) { >N~orSw%  
int lowIndex = i; s~06%QEG  
for (int j = data.length - 1; j > i; j--) { +;T\:'CU  
if (data[j] < data[lowIndex]) { j-#h^3l1?  
lowIndex = j; BD- c<K"  
} Dy&{PeE!  
} 5[LDG/{Tys  
SortUtil.swap(data,i,lowIndex); BdB9M8fM  
} 6<fcG  
} \1sWmN6  
n"w>Y)C(X)  
} '""s%C+  
.B?fG)'WsF  
Shell排序: cHC1l  
l6- n{zG  
package org.rut.util.algorithm.support; 6zIK%<  
W[f%m0  
import org.rut.util.algorithm.SortUtil; )>tT ""yEl  
%/2OP &1<  
/** l?A~^4(5a/  
* @author treeroot []doLt;J  
* @since 2006-2-2 s.^+y7$  
* @version 1.0 Th X6e  
*/ .oM;D~(=9  
public class ShellSort implements SortUtil.Sort{ 5,|of{8  
tIk$4)ZAl  
/* (non-Javadoc) JFdMYb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?$MO!  
*/ ASB3|uy_  
public void sort(int[] data) { ;OC{B}.vH  
for(int i=data.length/2;i>2;i/=2){ j-d542"  
for(int j=0;j insertSort(data,j,i); O03F@v  
} >9y!M'V  
} %?3$~d\n  
insertSort(data,0,1); jx'hxC'3  
} L|8&9F\  
%%9T-+T  
/** p7W9?b9  
* @param data 0ybMI+*  
* @param j BoXPX2:  
* @param i =zR9^k  
*/ Yyw9IYB;  
private void insertSort(int[] data, int start, int inc) { @"B{k%+  
int temp; ~x[(1  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); GL _hRu  
} J| 1!4R~  
} `YY07(%  
} FE1'MUT_  
Y.q$"lm7k  
} cqaq~  
OepQ Z|2  
快速排序: Gzp*Vr  
v%kl*K`*  
package org.rut.util.algorithm.support; }zIWagC6  
)Y`ybADd3  
import org.rut.util.algorithm.SortUtil; Bjh8uW G  
1)5/a5  
/** ;Fd1:"1pP  
* @author treeroot /8 y v8  
* @since 2006-2-2 3lbGG42:  
* @version 1.0 {N << JX  
*/ ixL[(*V  
public class QuickSort implements SortUtil.Sort{ TEla?N  
^x Z=";eq  
/* (non-Javadoc) Uu|2!}^T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4b+_|kYb  
*/ VR'zm\< D  
public void sort(int[] data) { >%5GMx>m  
quickSort(data,0,data.length-1); lk[u  
} WpOH1[ 8v  
private void quickSort(int[] data,int i,int j){ Xy}>O*  
int pivotIndex=(i+j)/2; b8 1cq,  
file://swap (Q.tH  
SortUtil.swap(data,pivotIndex,j); sX ]gL  
K"!U&`T  
int k=partition(data,i-1,j,data[j]); t qUBl?i  
SortUtil.swap(data,k,j); Zq 'FOzs  
if((k-i)>1) quickSort(data,i,k-1); 0d$LUQ't  
if((j-k)>1) quickSort(data,k+1,j); h*Mt{A&'.&  
Ff d4c  
} w]fVELU  
/** %.wx]:o  
* @param data )LNKJe+  
* @param i P`S'F_IN  
* @param j l3y}nh+ 8  
* @return 3BAQ2S}  
*/ 7%&e4'SZO  
private int partition(int[] data, int l, int r,int pivot) { Od~ e*gA8  
do{ *q;83\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); WR u/7$8  
SortUtil.swap(data,l,r); D&=+PAX  
} X5(oL  
while(l SortUtil.swap(data,l,r); ><$V:nsEO  
return l; }S4+1 U3  
} %L$ ?Mey  
i ~)V>x  
} 4pZKm-dM^  
~+,ZD)AKi4  
改进后的快速排序: jAovzZ6BL  
%zR5q  Lb  
package org.rut.util.algorithm.support; [;l;kom  
1r5Z$3t\  
import org.rut.util.algorithm.SortUtil; f%JM a]yV  
=BbXSwv'(  
/** x TqP`ljX  
* @author treeroot O]?\<&y  
* @since 2006-2-2 5k?xBk=<  
* @version 1.0 8Q0/kG  
*/ +:Nz_l  
public class ImprovedQuickSort implements SortUtil.Sort { |,({$TrF  
Y\ ;hjxR-  
private static int MAX_STACK_SIZE=4096; sLzZ}u?(  
private static int THRESHOLD=10; bM }zGFt  
/* (non-Javadoc) 2IP<6l8N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =$T[  
*/ TH55@1W,[  
public void sort(int[] data) { ~@e=+Z  
int[] stack=new int[MAX_STACK_SIZE]; I,aaSBwt&2  
uL:NWgN  
int top=-1; e;LC\*dG  
int pivot; gQ|?~hYYv  
int pivotIndex,l,r; "`mG_qHI[  
"D:?l`\o  
stack[++top]=0; fhha-J  
stack[++top]=data.length-1; LMN`<R(q]  
b?<@  
while(top>0){ f3s4aARP  
int j=stack[top--]; jaIcIc=Pf  
int i=stack[top--]; aCi)icn$  
mR|']^!SE  
pivotIndex=(i+j)/2; "*S_wN%  
pivot=data[pivotIndex]; XsSDz}dg  
.bRtK+}F#  
SortUtil.swap(data,pivotIndex,j); Q=Q&\.<  
-Vs;4-B{9  
file://partition =>&~p\Aw  
l=i-1; :*R+ee,& -  
r=j; A+}O~,mxP8  
do{ o#D'"Tn!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ,#9i=gp  
SortUtil.swap(data,l,r); +i}uRO  
} MlLM $Y-@  
while(l SortUtil.swap(data,l,r); ,Ww.W'#P  
SortUtil.swap(data,l,j); 7#*`7 K'P!  
Fh&USn"  
if((l-i)>THRESHOLD){ :bCswgd[  
stack[++top]=i; wzcv[C-x  
stack[++top]=l-1; :H]MMe  
} sp_19u  
if((j-l)>THRESHOLD){ 2_Zn?#G8dl  
stack[++top]=l+1; 3ly ]DTbz  
stack[++top]=j; + (`.pa z@  
} Gz--C(  
HcV,r,>e  
} &o&}5Aba9  
file://new InsertSort().sort(data); J<9}) m  
insertSort(data); #%/Jr 52<  
} mi@uX@ #  
/** iszVM  
* @param data S2 P9C"  
*/ LaL{ ^wP  
private void insertSort(int[] data) { rKTc 6h:)  
int temp; y>cT{)E$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -vh\XO  
} B->oTC`5  
} ]<9o>#3  
} kLXa1^Lq  
J:IAs:e`  
} A6xN6{R!  
tItI^]w2s  
归并排序: /N")uuv  
@HY P_hR  
package org.rut.util.algorithm.support; kk OjAp{<t  
;g?o~ev 8  
import org.rut.util.algorithm.SortUtil; x4`|[  
k`\L-*:Ji  
/** +xU=7chA  
* @author treeroot 7c<_j55(  
* @since 2006-2-2 &Gm3  
* @version 1.0 K]^Jl0  
*/ XAB/S8e  
public class MergeSort implements SortUtil.Sort{ 7{VN27Fa_  
_Om5w p=:  
/* (non-Javadoc) R-2Aby ts2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d7Z$/ $  
*/ I]Z"?T  
public void sort(int[] data) { ' R= OeH  
int[] temp=new int[data.length]; M{=p0?X  
mergeSort(data,temp,0,data.length-1); &$h#9  
} dd@ D s  
vtzbF1?O  
private void mergeSort(int[] data,int[] temp,int l,int r){ 3=0b  
int mid=(l+r)/2; UY)Iu|~0b  
if(l==r) return ; :Z6l)R+V  
mergeSort(data,temp,l,mid); xo(>nFjo  
mergeSort(data,temp,mid+1,r); WpkCFp  
for(int i=l;i<=r;i++){ `0=j,54cx  
temp=data; N*KM6j  
} " "CNw-^t  
int i1=l; u~Y+YzCxV  
int i2=mid+1; V9;IH<s:  
for(int cur=l;cur<=r;cur++){ Vp8!-[R  
if(i1==mid+1) jk])S~xl?  
data[cur]=temp[i2++]; K~qKr<)  
else if(i2>r) w3Dqpo8E  
data[cur]=temp[i1++]; 0{stIgB$  
else if(temp[i1] data[cur]=temp[i1++]; g&/r =U  
else V|4k=_-  
data[cur]=temp[i2++]; .G/RQn]x}  
} |KSoS#Y  
} HzZX=c  
WVx^}_FD0  
} & 5'cN  
JNI&]3[C>?  
改进后的归并排序: i}C%`1+(  
Qs 'dwc  
package org.rut.util.algorithm.support; NH,4>mV$!  
%D ,(S-Uj  
import org.rut.util.algorithm.SortUtil; 1Nz#,IdQ  
$ \ I|6[P  
/** h|EHK!<"8  
* @author treeroot x`K"1E{2  
* @since 2006-2-2 '~xjaa;.  
* @version 1.0 u}jC$T>2%6  
*/ |+1k7S  ,  
public class ImprovedMergeSort implements SortUtil.Sort { I.1(qbPkF+  
@[;$R@M_3  
private static final int THRESHOLD = 10; OuB [[L  
1+ V<-I@{  
/* Oz=!EG|N  
* (non-Javadoc) I$f'BAw  
* qITd.< k  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (>-(~7PR  
*/ ,(kaC.Em  
public void sort(int[] data) { J^mm"2  
int[] temp=new int[data.length]; oho~?.F  
mergeSort(data,temp,0,data.length-1); WAVEwA`r  
} iv6bXV'N  
l R^W*w4y  
private void mergeSort(int[] data, int[] temp, int l, int r) { {InW%qSn_  
int i, j, k; @Z@S;RWSU  
int mid = (l + r) / 2; #/WjKr n  
if (l == r) /$UWTq/C7  
return; l^v,X%{Iz  
if ((mid - l) >= THRESHOLD) lH>6;sE  
mergeSort(data, temp, l, mid); wOR#sp&  
else FNXVd/{M3  
insertSort(data, l, mid - l + 1); pF:C   
if ((r - mid) > THRESHOLD) ,u   
mergeSort(data, temp, mid + 1, r); >yr3C  
else .X6V>e)(3  
insertSort(data, mid + 1, r - mid); tBE-:hX*  
7zu3o  
for (i = l; i <= mid; i++) { O9:J ^g  
temp = data; A~'p~ @L  
} w)Y}hlcq  
for (j = 1; j <= r - mid; j++) { D^w<V%] .  
temp[r - j + 1] = data[j + mid]; XQj+]-m  
} AKAxfnaR  
int a = temp[l]; ^ANz=`N5,  
int b = temp[r]; mz^[C7(q'(  
for (i = l, j = r, k = l; k <= r; k++) { Q0TKM >  
if (a < b) { 6`)Ss5jzk  
data[k] = temp[i++];  83:qIfF  
a = temp; KI5099_/  
} else { lDG.\u  
data[k] = temp[j--]; Y= ^o {C6  
b = temp[j]; {ALOs^_-  
} -V}ZbXJD  
} &fifOF#[ e  
} [&{NgUgu"  
21\?FQrz  
/** )H1chNI)  
* @param data x_x|D|@wM  
* @param l 9q"G g?  
* @param i h>"Z=y  
*/ cP8@'l@!  
private void insertSort(int[] data, int start, int len) { Ky'\t7p u  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 1)!]zV  
} GoG_4:^#h  
} $I90KQB\_  
} A|P `\_  
} b'4r5@GO  
Td![Id  
堆排序: 20mZ{_%  
jp-]];:aPJ  
package org.rut.util.algorithm.support; J i:0J},m  
.n)0@X!  
import org.rut.util.algorithm.SortUtil; %gXNWxv  
Y ^uYc}  
/** 8j!(*'J.  
* @author treeroot p9iCrqi  
* @since 2006-2-2 _ 4+=S)$  
* @version 1.0 ]\:l><  
*/ PX,fg5s\b  
public class HeapSort implements SortUtil.Sort{ "yxBD 7  
e irRAU  
/* (non-Javadoc) n/GJ&qLi:g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s B!2't  
*/ p:8]jD@}%  
public void sort(int[] data) { kA&ul  
MaxHeap h=new MaxHeap(); c#(&\g2H  
h.init(data); rD U"l{cg  
for(int i=0;i h.remove(); M.}QXta  
System.arraycopy(h.queue,1,data,0,data.length); .(zZTyZr  
} "_/5{Nc$  
*wfkjG  
private static class MaxHeap{ vghn+P8  
w^QqYUL${  
void init(int[] data){ |)u|@\{  
this.queue=new int[data.length+1]; ]ch=D  
for(int i=0;i queue[++size]=data; W[j7Vi8v  
fixUp(size); XY`2>7  
} (Zu V5|N  
} ` G.:G/b%H  
<2R xyoDL6  
private int size=0; AkR ZUj\  
_k.gVm  
private int[] queue; 60Obek`  
_fANl}Mf:  
public int get() { eE;")t,  
return queue[1]; ' k[gxk|d2  
} G6x2!Ny  
sOW,hpNW  
public void remove() { F`YxH*tO7  
SortUtil.swap(queue,1,size--); Z'z~40Bda  
fixDown(1); S~ 3|  
} )Z2t=&Nw  
file://fixdown JSm3ZP|GqJ  
private void fixDown(int k) { k~b8=$  
int j; QYTwGThWR  
while ((j = k << 1) <= size) { U9p^?\-=  
if (j < size %26amp;%26amp; queue[j] j++; _ a,XL<9I  
if (queue[k]>queue[j]) file://不用交换 >~^##bIb  
break; W4(O2RU  
SortUtil.swap(queue,j,k); z?8Sie  
k = j; 6 _\j_$  
} ihdtq  
} b`sph%&  
private void fixUp(int k) { EaGS}=qY5  
while (k > 1) { Y^f12%  
int j = k >> 1; Gk5SG_o  
if (queue[j]>queue[k]) &g<`i{_  
break; Jv=G3=.  
SortUtil.swap(queue,j,k); XS/5y(W  
k = j; wY j~(P"  
} 7oI^shk  
} :WBl0`kW]4  
f*SAbDE  
}  g8_IZ(%:  
&vp0zYd+v  
} Z;JZ<vEt92  
9#@CmiIhy  
SortUtil: vXM``|  
3M&75OE  
package org.rut.util.algorithm; L&nGjC+Lr  
VCvqiHn  
import org.rut.util.algorithm.support.BubbleSort; oxPb; %  
import org.rut.util.algorithm.support.HeapSort; RycO8z*p  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8;s$?*G i  
import org.rut.util.algorithm.support.ImprovedQuickSort; XOy#? X/`  
import org.rut.util.algorithm.support.InsertSort; 4hv'OEl  
import org.rut.util.algorithm.support.MergeSort; ]& q mV  
import org.rut.util.algorithm.support.QuickSort; %lU$;cY  
import org.rut.util.algorithm.support.SelectionSort; RFkJ^=}  
import org.rut.util.algorithm.support.ShellSort; N]sX r  
Zb7:qe<UN  
/** =JnUTc _u  
* @author treeroot ico(4KSk  
* @since 2006-2-2 c!%:f^7g  
* @version 1.0 'HV}Tr  
*/ PF(P"f.?D  
public class SortUtil { o^! Zt 9  
public final static int INSERT = 1; =>CrZ23B "  
public final static int BUBBLE = 2; h D/b O  
public final static int SELECTION = 3; ~U~4QQV  
public final static int SHELL = 4; $V8B =k~  
public final static int QUICK = 5; HiG&`:P>q  
public final static int IMPROVED_QUICK = 6; R%Yws2Le2  
public final static int MERGE = 7; d0 tN73(  
public final static int IMPROVED_MERGE = 8; `'[ 7M  
public final static int HEAP = 9; 3:Sv8csT  
r(yb%p+  
public static void sort(int[] data) { 2aN  
sort(data, IMPROVED_QUICK); S-h1p`  
} G?/1 F1  
private static String[] name={ [J+K4o8L<A  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" T`=N^Ca1!`  
}; )N2yhdcqI  
.n`MPx'  
private static Sort[] impl=new Sort[]{ k>Qr 14F  
new InsertSort(), pDlh^?cux  
new BubbleSort(), N3H!ptn37  
new SelectionSort(), >}/"g x  
new ShellSort(), +* )Qi)  
new QuickSort(), Q_#X*I  
new ImprovedQuickSort(), 3Pp*ID  
new MergeSort(), E4[\lX$J  
new ImprovedMergeSort(), 9=I(AYG{m  
new HeapSort() 6#5@d^a  
}; \o@b5z ]e  
9ffRY,1@  
public static String toString(int algorithm){ ^\mN<z(  
return name[algorithm-1]; >|7&hj$  
} zT~ GBC-IX  
1)NX;CN  
public static void sort(int[] data, int algorithm) { (vjQF$Hp  
impl[algorithm-1].sort(data); 7w{`f)~  
} wy_TFV  
&^9>h/-XT  
public static interface Sort { M)EUR0>8  
public void sort(int[] data); 9&'Mb[C`"  
} v(4C?vxhG  
( L RX  
public static void swap(int[] data, int i, int j) { gpr];lgS  
int temp = data; Dl/UZ@8pl  
data = data[j]; ^m8\fCA*  
data[j] = temp; ;wprHXjq  
} fC%;|V'Nd  
} qBX<{[  
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