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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。 k3S**&i!CR  
插入排序: Yw?%>L  
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package org.rut.util.algorithm.support; D' uzH|z8  
s x`C<c~u  
import org.rut.util.algorithm.SortUtil; lYQcQ*-  
/** > { fX;l  
* @author treeroot mR8&9]g&  
* @since 2006-2-2 # ?}WQP!  
* @version 1.0 3o"~_l$z  
*/ 2MtaOG2l&q  
public class InsertSort implements SortUtil.Sort{ 5x=tOR/h  
&S''fxGL  
/* (non-Javadoc) Nm#KHA='Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bk?MF6  
*/ pZjyzH{~  
public void sort(int[] data) { ,((5|MbM/  
int temp; SJy:5e?zk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); D?X97jNm  
} ?B@iBOcu[  
} KZ/}Iy>As  
} T3'dfe U  
A3Ltk 2<  
} ``>WFLWTn  
Bz /NFNi[p  
冒泡排序: BE%#4c.b  
HbZ3QWP  
package org.rut.util.algorithm.support; (doFYF~w  
G>*s+  
import org.rut.util.algorithm.SortUtil; ywi Shvi8  
RX7,z.9@'O  
/** ug UV`5w   
* @author treeroot TyGXDU  
* @since 2006-2-2 D{a{$P r  
* @version 1.0 :tzCuK?e  
*/ hj0uv6t.c  
public class BubbleSort implements SortUtil.Sort{ a/>={mb Ki  
|}'}TYX0:  
/* (non-Javadoc) {,P&05iSi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i~ zL,/O8  
*/ QsI$4:yl  
public void sort(int[] data) { +de.!oY  
int temp; #_|b;cf  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ,+zLFQC0@  
if(data[j] SortUtil.swap(data,j,j-1); ZFz>" vt@  
} Bv3?WW  
} 9at7$Nq  
} . +.Y`0  
} N:"E%:wSbi  
qC`"<R=GX  
} 78}iNGf  
7<-D_$SrU  
选择排序: b$.N8W%  
RFQa9Rxk  
package org.rut.util.algorithm.support; HZfcLDrO  
>q[Elz=dI  
import org.rut.util.algorithm.SortUtil; P%%Cd  
:R<,J=+$u  
/** <<4G GO  
* @author treeroot 8c]\4iau  
* @since 2006-2-2 2{@: :JZ  
* @version 1.0 NoDq4>   
*/ U:YT>U1Z  
public class SelectionSort implements SortUtil.Sort { h1JG^w$ 5  
@36^4E>h  
/* M7!&gFv8  
* (non-Javadoc) (w"zI!  
* d3^LalAp  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jG{xFz>x  
*/ gt{ei)2b  
public void sort(int[] data) { So0YvhZ+  
int temp; r{6 ,;  
for (int i = 0; i < data.length; i++) { kpK: @  
int lowIndex = i; 8oN4!#:  
for (int j = data.length - 1; j > i; j--) { AVyo)=&  
if (data[j] < data[lowIndex]) { ROQk^  
lowIndex = j; $ZwsTV]x  
} stoBjDS  
} KC8A22  
SortUtil.swap(data,i,lowIndex); L=zeFn  
} bF?EuL  
} AB}Qd\  
X+bLLW>&  
} .t7D/_  
HT kce,dQ  
Shell排序: 6q6&N'We  
`=%[  
package org.rut.util.algorithm.support; '<6Gz7O  
'2:Ily,S@  
import org.rut.util.algorithm.SortUtil; }6m5MH$7q  
>nvreis  
/** $0iz;!w  
* @author treeroot URJ"  
* @since 2006-2-2 "wexG]R=5  
* @version 1.0 |K/#2y~  
*/ P|_?{1eO2  
public class ShellSort implements SortUtil.Sort{ ;?h#',(p  
U{eC^yjt"o  
/* (non-Javadoc) bKG:_mWe w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fgTvwO Sk  
*/ |w /txn8G|  
public void sort(int[] data) { *~2jP;$  
for(int i=data.length/2;i>2;i/=2){ iT9cw`A^%  
for(int j=0;j insertSort(data,j,i); b LSI\  
} ?aO%\<b  
} _lyP7$[: c  
insertSort(data,0,1); %aL>n=$  
} My_fm?n  
4ol=YGCI_  
/** k]; <PF  
* @param data sks_>BM  
* @param j  /=[M  
* @param i )bw>)&)b`  
*/ 7{az %I$h  
private void insertSort(int[] data, int start, int inc) { sy/J+==  
int temp; ][wS}~):  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); AVNB)K"  
} 2MB\!fh  
} 8q_3*++D  
} !Me%W3  
vaR0`F  
} ,ulNap"R  
&WvJg#f  
快速排序: br$!}7#=L  
^Fb"Is#S,  
package org.rut.util.algorithm.support; cr,o<  
E3NYUHfZ  
import org.rut.util.algorithm.SortUtil; K<Ct  
f&^Ea-c  
/** Y k~ i.p  
* @author treeroot _2f}WY3S  
* @since 2006-2-2 8a. |CgI#h  
* @version 1.0 T7cT4PAW  
*/ =CRaMjN  
public class QuickSort implements SortUtil.Sort{ B;W=61d  
e/@udau  
/* (non-Javadoc) YF&SH)Y7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &sx/qS#,VL  
*/ T']*h8  
public void sort(int[] data) { NF&\<2kX  
quickSort(data,0,data.length-1); 2Ni{wg"  
} VFA1p)n  
private void quickSort(int[] data,int i,int j){ s/Q}fW$ex  
int pivotIndex=(i+j)/2; -uO< ]  
file://swap rhNdXYY>  
SortUtil.swap(data,pivotIndex,j); 9n8;eE08  
PMXnupt  
int k=partition(data,i-1,j,data[j]); {} vl^b  
SortUtil.swap(data,k,j); JB b}{fo~  
if((k-i)>1) quickSort(data,i,k-1); 1`2lTkg  
if((j-k)>1) quickSort(data,k+1,j); r]0o  
*xL#1  
} r \=p.cw<  
/** y7,~7f!N2  
* @param data >]C;sP  
* @param i u$<FKp;I  
* @param j z{!wQ~ j  
* @return  tEP^w  
*/ Kau*e8  
private int partition(int[] data, int l, int r,int pivot) { hh:)"<[  
do{ WxO*{`T!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  ] mP-HFl  
SortUtil.swap(data,l,r); Q&M(wnl5  
} /0SPRf}p  
while(l SortUtil.swap(data,l,r); |U7{!yy%MF  
return l; 3P-#NL  
} &Lq @af#  
O]{H2&k@  
} X8;03EW;  
unD8h=Z2  
改进后的快速排序: o/=K:5  
$I1p"6  
package org.rut.util.algorithm.support; \?qXscq  
_}JygOew  
import org.rut.util.algorithm.SortUtil; rR C3^X`u  
X]y3~|K  
/** rM>&! ?y+  
* @author treeroot ;'J L$=  
* @since 2006-2-2 /=7|FtB`  
* @version 1.0 "#e2"=3*  
*/ XTZWbhNF  
public class ImprovedQuickSort implements SortUtil.Sort { *j <;;z-  
Pfd FB  
private static int MAX_STACK_SIZE=4096; *q8W;Wa L  
private static int THRESHOLD=10; +[~\\X  
/* (non-Javadoc) 8^< -;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uc7Y8iO  
*/ 6;(Slkv  
public void sort(int[] data) { B8a!"AQ~5  
int[] stack=new int[MAX_STACK_SIZE]; 2M1yw "  
!L3Bvb;Q  
int top=-1; Pu axS  
int pivot; |'KNR]: N  
int pivotIndex,l,r; ?pQ, 5+8  
p}(w"?2  
stack[++top]=0; vBM\W%T|d  
stack[++top]=data.length-1; ?0_i{BvN  
tbOe,-U-@  
while(top>0){ ( !Ml2  
int j=stack[top--]; jv_sRV  
int i=stack[top--]; xR1g  
09x\i/nb  
pivotIndex=(i+j)/2; 5l)p5Bb48c  
pivot=data[pivotIndex]; ih~c(&n0  
-F5U.6~`!  
SortUtil.swap(data,pivotIndex,j); 4r5,kOFWb  
z': >nw  
file://partition \ 2".Kb@=  
l=i-1; *xLMs(gg  
r=j; n\cP17dr  
do{ WtlIrdc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); F ^E(AE  
SortUtil.swap(data,l,r); 9"V27"s  
} 8E0Rg/DnT  
while(l SortUtil.swap(data,l,r); KE5f`h  
SortUtil.swap(data,l,j); u $sX6  
03rZz1  
if((l-i)>THRESHOLD){ Y1 -cz:  
stack[++top]=i; qw_qGgbl  
stack[++top]=l-1; )n0g6  
} %8 4<@f&n]  
if((j-l)>THRESHOLD){ '`3-X];p  
stack[++top]=l+1; Ogjjjy84vM  
stack[++top]=j; &"^A  
} t-E'foYfr`  
gXH89n  
} DI$z yj~3  
file://new InsertSort().sort(data); EkTen:{G  
insertSort(data); P, S9gG9  
} 4AF" +L  
/** f-{[ushj  
* @param data IndNR:"g  
*/ EO| kiC   
private void insertSort(int[] data) { `_v-Y`Z  
int temp; S?8q.59  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H!45w;,I  
} ~$Mp>ZB2W  
} 0kCUz  
} ZFdQ Z=.'  
gV`:eNo*  
} sO(Kpo9jq  
s;5PHweWf  
归并排序: JL(*peeu3  
 j, G/[V  
package org.rut.util.algorithm.support; YJ75dXc&&  
ueWG/`ig  
import org.rut.util.algorithm.SortUtil; %[p[F~Z^Z  
c6lEWC:  
/** kbMIMZC/G  
* @author treeroot gE$dz#t.  
* @since 2006-2-2 L>@6lhD)x  
* @version 1.0 3\'.1p  
*/ h hd n9n  
public class MergeSort implements SortUtil.Sort{ |Ec$%  
!HB,{+25  
/* (non-Javadoc) D#k>.)g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ws1<Jt3/."  
*/ Jk1U p2#B  
public void sort(int[] data) { 2nEj X\BY  
int[] temp=new int[data.length]; FlkAo]  
mergeSort(data,temp,0,data.length-1); |r /}r,t}  
} dmF<J>[  
c/x(v=LW  
private void mergeSort(int[] data,int[] temp,int l,int r){ $[|8bE  
int mid=(l+r)/2; "0/OpT7h7  
if(l==r) return ; n1cAI|ZE  
mergeSort(data,temp,l,mid); y'zEaL&SI@  
mergeSort(data,temp,mid+1,r); atN`w=6A`  
for(int i=l;i<=r;i++){ Nq9(O#}  
temp=data; N[42al  
} -}N{'S,Bp  
int i1=l; HV?awc  
int i2=mid+1; jf$t  
for(int cur=l;cur<=r;cur++){ ".@SQgyb0  
if(i1==mid+1) g`&pQ%|=  
data[cur]=temp[i2++]; :V_$?S  
else if(i2>r) goHr# @  
data[cur]=temp[i1++]; IXg${I}_Q  
else if(temp[i1] data[cur]=temp[i1++]; glv(`cQ  
else | z('yy$  
data[cur]=temp[i2++]; 'Lm.`U  
} Az)P&*2:'`  
} F]ALZxwkz  
gVI*`$  
} -m+2l`DLy  
^ #Wf  
改进后的归并排序: Hu'c )|~f  
\?C(fp R  
package org.rut.util.algorithm.support; ?]7ITF  
 6f{c  
import org.rut.util.algorithm.SortUtil; eFeeloH?e*  
`i.f4]r  
/** f|q6<n_nM  
* @author treeroot Dn6DkD!  
* @since 2006-2-2 O&O1O> [p1  
* @version 1.0 h]D=v B  
*/ OOv"h\,  
public class ImprovedMergeSort implements SortUtil.Sort { \]r{73C  
|MBnRR  
private static final int THRESHOLD = 10; (Hn,}(3S  
h{h=',o1  
/* 60p1.;' /a  
* (non-Javadoc) v h%\ " h  
* 2'x_zMV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P, Vq/Tt  
*/ j$L<9(DoR  
public void sort(int[] data) { xw=B4u'z  
int[] temp=new int[data.length]; A2+t`[ w  
mergeSort(data,temp,0,data.length-1); d?S<h`{x   
} jV7q)\uu^  
Sqb#U{E  
private void mergeSort(int[] data, int[] temp, int l, int r) { Xajjzl\b  
int i, j, k; >"Hj=?  
int mid = (l + r) / 2; ]Wy V bIu  
if (l == r) )*_YeT&w.  
return; ]-AT(L >  
if ((mid - l) >= THRESHOLD) Z6 aT%7}}  
mergeSort(data, temp, l, mid); 3'']q3H  
else l'o}4am  
insertSort(data, l, mid - l + 1); P/ y-K0u  
if ((r - mid) > THRESHOLD) ^X_%e|  
mergeSort(data, temp, mid + 1, r); W&*{j;e9%I  
else t4JGd)r  
insertSort(data, mid + 1, r - mid); J,q:  
$>BP}V33  
for (i = l; i <= mid; i++) { qt1# P  
temp = data; L@2H>Lh35  
} s@ q54  
for (j = 1; j <= r - mid; j++) { zcNV<tx  
temp[r - j + 1] = data[j + mid]; (ncfR  
} T2Vj &EA@  
int a = temp[l]; F_-yT[i  
int b = temp[r]; =-q)I[4#  
for (i = l, j = r, k = l; k <= r; k++) { =djzE`)0  
if (a < b) { N7M^  
data[k] = temp[i++]; Dnp^yqz*  
a = temp; .oe,# 1Qh{  
} else { R]r~TJ o  
data[k] = temp[j--]; }U(^QB  
b = temp[j]; ]>AW  
} r`&ofk1K  
} "7aFVf  
} 9u)h$VC  
Og&2,`Jb  
/** OIoAqt  
* @param data /qp`xJ  
* @param l $rlIJwqn  
* @param i X;0EgIqh3  
*/ Tru`1/ 7I  
private void insertSort(int[] data, int start, int len) { !BY=HFT  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); GV2}K <s  
} q&N&n%rbm  
} x7*}4>|W,I  
} \fKv+  
} SKS[Lf  
F0|T%!FB>%  
堆排序: 'WOW m$2  
Ft|a/e  
package org.rut.util.algorithm.support; eIEcj<f  
Qv?jo(]  
import org.rut.util.algorithm.SortUtil; =uvv|@Z  
J L Z  
/** \Js9U|lY  
* @author treeroot =X1$K_cN  
* @since 2006-2-2 $DQ -.WI  
* @version 1.0 gz88$BT  
*/ (&x[>):6?  
public class HeapSort implements SortUtil.Sort{ #?-W.  
#F9$"L1Hg  
/* (non-Javadoc) @-7K~in?^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1X{A}9nA  
*/ "RG.vo7b  
public void sort(int[] data) { &{ f5F7E@  
MaxHeap h=new MaxHeap(); FIS-xpv$  
h.init(data); ~pw_*AN  
for(int i=0;i h.remove(); d_yqmx?w  
System.arraycopy(h.queue,1,data,0,data.length); bcZHFX  
} <h;P<4JX  
 %"z W]  
private static class MaxHeap{ J7$=f~$  
G%>[I6G  
void init(int[] data){ x7/2e{p uu  
this.queue=new int[data.length+1]; p\,lbrv  
for(int i=0;i queue[++size]=data; EU\1EBT^  
fixUp(size); *$s)p>  
} eHjR/MMr_  
} [&39Yv.k,7  
`  ^6}Dn  
private int size=0; p]>bN  
d82IEhZ#  
private int[] queue; nyDqR#t  
~{N|("nB  
public int get() { 7i'vAOnw^  
return queue[1]; lE`ScYG  
} dXOjaS# ~  
{6KU.'#iF  
public void remove() { 5i#B?+Y  
SortUtil.swap(queue,1,size--); c8yD-U/-  
fixDown(1); P EbB0GL  
}  KL|B| u  
file://fixdown sX=!o})0  
private void fixDown(int k) { CtE".UlCA  
int j; zL_X?UmV  
while ((j = k << 1) <= size) { d~n+Ds)%F  
if (j < size %26amp;%26amp; queue[j] j++; 6\]-J*e>  
if (queue[k]>queue[j]) file://不用交换 Pjx9@i  
break; Gis'IX(  
SortUtil.swap(queue,j,k); 4RzG3CJdS  
k = j; sC}/?^q  
} -OziUM1qs  
} fZGKVxo"  
private void fixUp(int k) { ZHB'^#b  
while (k > 1) { * T~sR'K+|  
int j = k >> 1; 'N}Wo}1r  
if (queue[j]>queue[k]) 5H',Bm4-  
break; n XQg(!  
SortUtil.swap(queue,j,k); i?a]v 5  
k = j; cJty4m-  
} =N3~2=g~A  
} '-*r&:  
,= PDL  
} 69L s"e  
mg 3jm  
} !KF;Z|_(I  
uIba{9tM"P  
SortUtil: Ea3tF0{  
[Z[)hUXE?  
package org.rut.util.algorithm; %ZxKN;  
H37Z\xS  
import org.rut.util.algorithm.support.BubbleSort; 3 C[ ;2  
import org.rut.util.algorithm.support.HeapSort; |l ~ADEg  
import org.rut.util.algorithm.support.ImprovedMergeSort; k'\RS6M`L  
import org.rut.util.algorithm.support.ImprovedQuickSort; !YoKKG~_0  
import org.rut.util.algorithm.support.InsertSort; :3G9YjzC}  
import org.rut.util.algorithm.support.MergeSort; LZ@^ A]U  
import org.rut.util.algorithm.support.QuickSort; h&Sl8$jVp  
import org.rut.util.algorithm.support.SelectionSort; _}\&;  
import org.rut.util.algorithm.support.ShellSort; F )tNA?p)  
D2hvf ^g'*  
/** 2ru6 bIb;  
* @author treeroot !cq4+0{O;&  
* @since 2006-2-2 Sj*H4ZHD<&  
* @version 1.0 <^&'r5H  
*/ |n~v_V2.0  
public class SortUtil { TX 87\W.  
public final static int INSERT = 1; Wqqo8Y~fq  
public final static int BUBBLE = 2; %W c-.E R  
public final static int SELECTION = 3; EXzY4D ^  
public final static int SHELL = 4; 4C2 D wj  
public final static int QUICK = 5; NN$`n*;l  
public final static int IMPROVED_QUICK = 6; I?:V EN:  
public final static int MERGE = 7; Lf,gS*Tg?  
public final static int IMPROVED_MERGE = 8; kj[[78  
public final static int HEAP = 9; E>[~"~x"pV  
m]%cNxS  
public static void sort(int[] data) { IEA[]eik>  
sort(data, IMPROVED_QUICK); v:+se6HY?p  
} :')<|(Zy  
private static String[] name={ [IYs4Y5  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" K[9<a>D`  
}; 3)7'dM  
CUtk4;^y#  
private static Sort[] impl=new Sort[]{ *zx;81X=  
new InsertSort(), ;uJVY)7a  
new BubbleSort(), \GkcK$Y  
new SelectionSort(), 6D+9f{~r  
new ShellSort(), t2E_y6  
new QuickSort(), c]O4l2nCL  
new ImprovedQuickSort(), Rbl(oj#  
new MergeSort(), < /}[x2w?]  
new ImprovedMergeSort(), 1k7E[G~G|  
new HeapSort() isN"7y|r:X  
}; UOwj"#  
b :+ X3  
public static String toString(int algorithm){ n b{8zo  
return name[algorithm-1]; |?0C9  
} g,1\Gj%y  
Gh< r_O~L3  
public static void sort(int[] data, int algorithm) { ;<*VwXJR  
impl[algorithm-1].sort(data); Ufk7%`  
} `,|7X]%b  
KSexG:Xb  
public static interface Sort { +Gjy%JFp  
public void sort(int[] data); ](O!6_'d  
} 's9)\LS>p  
S5XFYQ  
public static void swap(int[] data, int i, int j) { Rk'pymap  
int temp = data; Coyop#q#"{  
data = data[j]; "B\qp"N  
data[j] = temp; 6dNo!$C^  
} mjw:Z,  
} LsmC/+7r$1  
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