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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。 hN}X11  
插入排序: '=ZE*nGC  
v#X? KqD  
package org.rut.util.algorithm.support; sM4wh_lO  
9}\T?6?8pX  
import org.rut.util.algorithm.SortUtil; #eaey+~  
/** f(C0&"4e  
* @author treeroot 3646.i[D  
* @since 2006-2-2 Y'Af I^K  
* @version 1.0 " c]Mz&z  
*/ Vr^wesT\Hx  
public class InsertSort implements SortUtil.Sort{ N8vWwN[3  
9UwDa`^  
/* (non-Javadoc) \i&yR]LF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yJr Pb"  
*/ $W2g2[+  
public void sort(int[] data) { j` x9z_  
int temp; <)}*S  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a0n F U  
} #Q{6/{bM&J  
} w_-{$8|  
} AV'>  
q4Z \y  
} J3'"-,Hv  
QVP $e`4  
冒泡排序: dfrq8n]  
!!QMcx_C#/  
package org.rut.util.algorithm.support; KW 09qar  
5GY%ZRHh  
import org.rut.util.algorithm.SortUtil; $""[( d?0  
7!%cKZCY  
/** $ey<8qzp  
* @author treeroot *<UQ/)\  
* @since 2006-2-2 A ssf f;  
* @version 1.0 |hpm|eZG"h  
*/ "&r1&StO  
public class BubbleSort implements SortUtil.Sort{ o1Xk\R{  
m}XI?[!s  
/* (non-Javadoc) XJlun l)(K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Jd%#eD*k9  
*/ V^0*S=N  
public void sort(int[] data) { $'&5gFr9  
int temp; 55;xAsG  
for(int i=0;i for(int j=data.length-1;j>i;j--){ _zOzHc?Q  
if(data[j] SortUtil.swap(data,j,j-1); /Ly%-py-$  
} IlE! zRA  
} p7k0pSt  
} $0 l i"+  
} [qy@g5`  
4@bL` L)  
} p5bH- km6  
YF;8il{p  
选择排序: & =frt3  
}r i"u;.R  
package org.rut.util.algorithm.support; 9xSAWKr,l  
5~sJ$5<,  
import org.rut.util.algorithm.SortUtil; 'UB<;6wy  
mr/^lnO  
/** 1xx-}AIH#  
* @author treeroot T.{I~_  
* @since 2006-2-2 fer'2(G?W  
* @version 1.0 ]y(#]Tw\  
*/ X{ Nif G  
public class SelectionSort implements SortUtil.Sort { "NJ!A  
8@r+)2  
/* Og,,s{\  
* (non-Javadoc) U,]z)1#X|  
* 9 ROKueP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~MXPiZG?  
*/ H7{ 6t(0j  
public void sort(int[] data) { qH-dT,`"{  
int temp; ;hg]5r_  
for (int i = 0; i < data.length; i++) { bT>^% H3  
int lowIndex = i; CSD8?k]2  
for (int j = data.length - 1; j > i; j--) { K=~h1qV:  
if (data[j] < data[lowIndex]) { w,l1&=d  
lowIndex = j; "'PDreS  
} r)b`3=  
} ny MA%9,B  
SortUtil.swap(data,i,lowIndex); h)YqC$A-s  
} q<7Nz] Td  
} yx-{}Yj^  
vI+PL(T@  
} 0nl)0|?Az  
d8x$NW-s  
Shell排序: O" z=+79q  
/ '7WL[<  
package org.rut.util.algorithm.support; Ek 4aC3  
?d_Cy\G  
import org.rut.util.algorithm.SortUtil; wPW9bu  
a. gu  
/** ;[6u79;I  
* @author treeroot }R J2\CP  
* @since 2006-2-2 GI~;2 `V  
* @version 1.0 S</" ^C51J  
*/ F\XzP\  
public class ShellSort implements SortUtil.Sort{ XjX<?W  
\V&ly/\ )  
/* (non-Javadoc) un\"1RdO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Q3m?)X=Gd  
*/ 5-+Y2tp}  
public void sort(int[] data) { x &\~4,TN  
for(int i=data.length/2;i>2;i/=2){ lh5k@\X  
for(int j=0;j insertSort(data,j,i); 2S/^"IM["  
} T? =jKLPC  
} 6L*y$e"Qc  
insertSort(data,0,1); xR%CS`0R  
} +\{!jB*g  
mMa7Eyaf  
/** CjO/q)vV  
* @param data eDy}_By^  
* @param j =|jOio=s:  
* @param i v=/V<3  
*/ |g7E*1Ie  
private void insertSort(int[] data, int start, int inc) { }b+=,Sc"  
int temp; k1%Ek#5  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); (57x5qP X  
} `HHbQXB  
} fygy#&}~  
} - BocWq\  
%i^%D  
} htkyywv  
7u!p.kN  
快速排序: t%=ylEPW  
*rqih_j0  
package org.rut.util.algorithm.support; "PlM{ZI\  
2 {31"  
import org.rut.util.algorithm.SortUtil; QGsUG_/_P  
CwT52+Jb  
/** K{ 0mb  
* @author treeroot ))+R*k%  
* @since 2006-2-2 i1scoxX3\  
* @version 1.0 O,DA{> *m  
*/ 6bU/IVP  
public class QuickSort implements SortUtil.Sort{ *Fq Nzly  
KJ~f ~2;  
/* (non-Javadoc) 8Y4YE(x5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bg34YmZ  
*/ 1ra}^H}  
public void sort(int[] data) { HM<V$ R  
quickSort(data,0,data.length-1); 7$w:~VZ  
} ukZL  
private void quickSort(int[] data,int i,int j){ yyZjMnuD  
int pivotIndex=(i+j)/2; WLizgVM  
file://swap 4S9AXE6  
SortUtil.swap(data,pivotIndex,j); ?B[Z9Ef"8l  
w%L0mH2]ng  
int k=partition(data,i-1,j,data[j]); /.}&yRR  
SortUtil.swap(data,k,j); 5#iv[c  
if((k-i)>1) quickSort(data,i,k-1); 2sf/^XC1  
if((j-k)>1) quickSort(data,k+1,j); Ib!`ChZ  
!.F`8OD`u  
}  ) .#,1  
/** AJq'~fC;I  
* @param data 8mMrGf[Q\  
* @param i H,?AaM[V  
* @param j 3J@# V '  
* @return 6g<JPc  
*/ <Q%o}m4Kt  
private int partition(int[] data, int l, int r,int pivot) { lM?P8#3  
do{ $3FFb#r  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ? Bk"3{hl  
SortUtil.swap(data,l,r); /TpM#hkq/2  
} gBrIqM i5  
while(l SortUtil.swap(data,l,r); ZL-@2ZU{1  
return l; ;;UvK v  
} lMlXK4-  
w \85D|u  
} cDLS)  
:JPI#zZun  
改进后的快速排序: dmf~w_(7  
N=|w]t0*yc  
package org.rut.util.algorithm.support; \ar.(J  
A 8&%G8d  
import org.rut.util.algorithm.SortUtil; r$*k-c9Bf  
F[Peil+|`  
/** fv)-o&Q#  
* @author treeroot P 0,]Ud  
* @since 2006-2-2 9B<y w.  
* @version 1.0 RJ@d_~%U  
*/ DGp'Xx_8  
public class ImprovedQuickSort implements SortUtil.Sort { 7 +?  
A*@!tz<  
private static int MAX_STACK_SIZE=4096; lK}F>6^\  
private static int THRESHOLD=10; eZf-i1lJ  
/* (non-Javadoc) ?2Bp^3ytJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !dmI}<@&k  
*/ rMLCt Gi  
public void sort(int[] data) { Kx#G_N@  
int[] stack=new int[MAX_STACK_SIZE]; nfl6`)oW  
Is-Kz}4L  
int top=-1; UD"e:O_  
int pivot; -6Cxz./#yS  
int pivotIndex,l,r; JTdK\A>l  
KLbP;:sr  
stack[++top]=0; "i9$w\lm  
stack[++top]=data.length-1; {T=I~#LjMI  
7CNEP2}:R  
while(top>0){ ]%G[<zD,1  
int j=stack[top--]; (}bP`[@rX!  
int i=stack[top--]; v%B^\S3)  
@{~x:P5g  
pivotIndex=(i+j)/2; q"fK"H-j  
pivot=data[pivotIndex]; _RhCVoeB  
u9'4q<>&  
SortUtil.swap(data,pivotIndex,j); |9 }G  
Z@j0J[s  
file://partition 9e.n1  
l=i-1; !AP|ozkL  
r=j; V .$<  
do{ >WG$!o+R  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !*EHr09N7  
SortUtil.swap(data,l,r); # |2w^Kn  
} +-HaYB|p  
while(l SortUtil.swap(data,l,r); q!}&<w~|  
SortUtil.swap(data,l,j); 5Ss=z  
.wYx_  
if((l-i)>THRESHOLD){ AY|8wf,LS  
stack[++top]=i; W0l|E&fj[  
stack[++top]=l-1; t5[{ihv~:  
} hm?-QVRPV  
if((j-l)>THRESHOLD){ >.~^(  
stack[++top]=l+1; Ujb|| (W  
stack[++top]=j; b Kv9F@  
} k1B7uA'h"G  
O!uX:TE|Q  
} 5(TI2,4  
file://new InsertSort().sort(data); _?`3zm4  
insertSort(data); (;cbgHo%}  
} a\^DthZ!;|  
/** !d%OoRSU'  
* @param data ~M,nCG^4  
*/ c~z{/L  
private void insertSort(int[] data) { dIMs{!  
int temp; P2f~sx9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A+:K!|w  
} Rnun() plJ  
} p4|:u[:&  
} eDIjcZ  
ld`oIEj!P_  
} c tTbvXP  
)|'? uN7  
归并排序: CP/`ON  
ef Ra|7!HK  
package org.rut.util.algorithm.support; h dPK eqg7  
rzY7f: '  
import org.rut.util.algorithm.SortUtil; "X"DTP1b  
A5B 5pJ  
/** M9 _h0  
* @author treeroot u6cWLV t  
* @since 2006-2-2 Cz m`5  
* @version 1.0 o^7}H{AE  
*/ ^vJ08gu_W  
public class MergeSort implements SortUtil.Sort{ 3v5]L3  
z2S53^C*  
/* (non-Javadoc) 3fn6W)v?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 's!EAqCN  
*/ ]D%D:>9|/  
public void sort(int[] data) { Pgs4/  
int[] temp=new int[data.length]; v!K %\h2A  
mergeSort(data,temp,0,data.length-1); \O72PC+  
} }JAg<qy}  
$Omc Ed  
private void mergeSort(int[] data,int[] temp,int l,int r){ dt^yEapjM  
int mid=(l+r)/2; ] E`J5o}op  
if(l==r) return ; Qx'a+kLu9  
mergeSort(data,temp,l,mid); W!V06.  
mergeSort(data,temp,mid+1,r); 9:4P7  
for(int i=l;i<=r;i++){ x1?p+  
temp=data; ?Tt/,Hl?D  
} /V-7u  
int i1=l; .K;*uq:0  
int i2=mid+1; \d%&_rp  
for(int cur=l;cur<=r;cur++){ ` _[\j]  
if(i1==mid+1) $Ob]JAf}  
data[cur]=temp[i2++]; 23&;28)8  
else if(i2>r) *+lnAxRa?  
data[cur]=temp[i1++]; `L7 cS  
else if(temp[i1] data[cur]=temp[i1++]; wz T+V,   
else __'Z0?.4#  
data[cur]=temp[i2++]; F2OU[Z,-]  
} *cq#>rN  
} ZXe[>H  
|]Pigi7y-  
} #li;L  
^FF{71;  
改进后的归并排序: H Viu7kue`  
1K4LEg a`  
package org.rut.util.algorithm.support; x(}@se  
E+UOuf*(  
import org.rut.util.algorithm.SortUtil; 3zMmpeq  
6D _4o&N  
/** <o^mQq&  
* @author treeroot j?3J-}XC  
* @since 2006-2-2 ?^5W.`Y2i  
* @version 1.0 ps_CQh0  
*/ ib*$3Fn~  
public class ImprovedMergeSort implements SortUtil.Sort { 5"]PwC  
R qOEQ*k  
private static final int THRESHOLD = 10; SL>>]A,E<`  
>c8zMd  
/* $ bD 3  
* (non-Javadoc) ;x| 4Tm  
* l?Bv9k.^?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |`E\$|\p  
*/ )u'oI_  
public void sort(int[] data) { Pg|q{fc  
int[] temp=new int[data.length]; m -7^$  
mergeSort(data,temp,0,data.length-1); K\,&wU  
} ex&&7$CXc  
%pe7[/  
private void mergeSort(int[] data, int[] temp, int l, int r) { d #y{eV$Q  
int i, j, k; {;=+#QK/  
int mid = (l + r) / 2; nLJ]tpw^DH  
if (l == r) Y')in7g  
return; ukzXQe;l1  
if ((mid - l) >= THRESHOLD) _av%`bb&z9  
mergeSort(data, temp, l, mid); bXC;6xZV  
else b> &kL  
insertSort(data, l, mid - l + 1); FV!  
if ((r - mid) > THRESHOLD) 64h r| v  
mergeSort(data, temp, mid + 1, r); ,`S"nq  
else b;Q cBGwKT  
insertSort(data, mid + 1, r - mid); (:vY:-\ bO  
w9H%u0V?  
for (i = l; i <= mid; i++) { +twJHf_U  
temp = data; e8--qV#<  
} ib ;:*  
for (j = 1; j <= r - mid; j++) { nke[}Hqf  
temp[r - j + 1] = data[j + mid]; }eULcgRG  
} /XtxgO\T.  
int a = temp[l]; xAon:58m{  
int b = temp[r]; )TVyRYZ1  
for (i = l, j = r, k = l; k <= r; k++) { {6a";Xj\e  
if (a < b) { z^ KrR  
data[k] = temp[i++]; }7wQFKME  
a = temp; c3g\*)Jz"F  
} else { X;6&:%ZL@^  
data[k] = temp[j--]; 4$1sBY/  
b = temp[j]; p+#uPY1#  
} ~?+Jt3?,  
} "((6)U#  
} htkn#s~=  
s:i$s")  
/** BVC\~j j  
* @param data /J wQ5  
* @param l ! FhN(L[=j  
* @param i gV$Lfkz  
*/ w3fi2B&q  
private void insertSort(int[] data, int start, int len) { )xT_RBR  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); & i)p^AmM  
} -8#Of)W  
} ;UArDwH  
} OAc+LdT  
} r }pYm'e  
pc:~_6S  
堆排序: 0waQw7 E  
h8 $lDFo  
package org.rut.util.algorithm.support; \b{=&B[Q$'  
Pdrz lu   
import org.rut.util.algorithm.SortUtil; !!DHfAV]  
N=)N   
/** GwxfnC Ki9  
* @author treeroot _u]Wr%D@  
* @since 2006-2-2 +*lSB%`aS  
* @version 1.0 1g^N7YF  
*/ ro|d B  
public class HeapSort implements SortUtil.Sort{ X<vv:  
%dhnp9'  
/* (non-Javadoc) AdKv!Ta5b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1`X{$mxw  
*/ xpRQ"6  
public void sort(int[] data) { gM^ Hs7o,  
MaxHeap h=new MaxHeap(); Aum&U){yY  
h.init(data); Kw"7M~  
for(int i=0;i h.remove(); o3qBRT0[R  
System.arraycopy(h.queue,1,data,0,data.length); u4rGe!  
} 'HH[[9Q  
zxT&K|  
private static class MaxHeap{ v`*!Bhc-  
Bd31> %6  
void init(int[] data){ doW_v u  
this.queue=new int[data.length+1]; #q6jE  
for(int i=0;i queue[++size]=data; _ ?xORzO  
fixUp(size); ?R#-gvX%  
} R*'rg-d  
} Go= MG:`  
!J3g,p*  
private int size=0; <;=?~QK%-  
W(9-XlYKE  
private int[] queue; QZYD;&iY&  
Nd%,V  
public int get() { .?@$Rd2@W  
return queue[1]; j_j~BXhIS  
} l]uF!']f  
s1?N&t8c  
public void remove() { &Plc  
SortUtil.swap(queue,1,size--); [yW0U:m  
fixDown(1); X8GIRL)lJ  
} )8!""n~  
file://fixdown !Hr~B.f7  
private void fixDown(int k) { &?#V*-;^  
int j; '[I?G6  
while ((j = k << 1) <= size) { 69p>?zn  
if (j < size %26amp;%26amp; queue[j] j++; OtBVfA:[  
if (queue[k]>queue[j]) file://不用交换 g;UB+Y 247  
break; d3St Z~&r!  
SortUtil.swap(queue,j,k); `!K(P- yB?  
k = j; 'W@X139zq  
} x32hO;  
} f)Z$ ,&  
private void fixUp(int k) { 9h9 jS~h  
while (k > 1) { }} J?, >g  
int j = k >> 1; +>M^p2l*&  
if (queue[j]>queue[k])  |'aGj  
break; Vof[yL `  
SortUtil.swap(queue,j,k); [h {zT)[  
k = j; V<*PaS..  
} p$`71w)'[  
} [sy~i{Bm  
Rr{mD#+  
} 5N@k9x  
;xS@-</:  
} P\pHos  
1~zzQ:jAZ  
SortUtil: [U5[;BNRD  
|k\4\a Lj  
package org.rut.util.algorithm; _)"-zbh}{  
g=XvqD<  
import org.rut.util.algorithm.support.BubbleSort; yT.h[yv"w  
import org.rut.util.algorithm.support.HeapSort; ^<}9#q/rt  
import org.rut.util.algorithm.support.ImprovedMergeSort; ;}@.E@s%'  
import org.rut.util.algorithm.support.ImprovedQuickSort; a`  s2 z  
import org.rut.util.algorithm.support.InsertSort; FAX|.!US*p  
import org.rut.util.algorithm.support.MergeSort; sf<S#;aYqn  
import org.rut.util.algorithm.support.QuickSort;  MX2]Q  
import org.rut.util.algorithm.support.SelectionSort; iVTC"v  
import org.rut.util.algorithm.support.ShellSort; ;:4&nJ*qG  
P<ElH 3J`  
/** ]bLI!2Kr  
* @author treeroot u!hY bCB  
* @since 2006-2-2 ;wK;  
* @version 1.0 >E;kM B  
*/ ZVs]_`(+  
public class SortUtil { {p[{5k 0  
public final static int INSERT = 1;  sC1Mwx  
public final static int BUBBLE = 2; )CJXk zOX  
public final static int SELECTION = 3; -d1 YG[1|  
public final static int SHELL = 4; zl^ %x1G  
public final static int QUICK = 5; &kUEnwQ -  
public final static int IMPROVED_QUICK = 6; `<2k.aW4e8  
public final static int MERGE = 7; Q3[MzIk 4  
public final static int IMPROVED_MERGE = 8; =(2y$,6g?  
public final static int HEAP = 9; )S@e&a|  
+pXYBwH 7Q  
public static void sort(int[] data) { |;sL*Vr  
sort(data, IMPROVED_QUICK); f>!)y-7  
} c<bV3,  
private static String[] name={ U*(/eEtd-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" >HNBTc=~t  
}; Ne#FBRu5  
kl%%b"h'  
private static Sort[] impl=new Sort[]{ M15Ce)oB1(  
new InsertSort(), >cU#($X$^  
new BubbleSort(), nWb*u  
new SelectionSort(), @6h ,#8#  
new ShellSort(), nsn  
new QuickSort(), d!0iv'^t  
new ImprovedQuickSort(), 8?LsV<  
new MergeSort(),  >M~1{  
new ImprovedMergeSort(), )Q= EmZbJz  
new HeapSort() h K;9XJAf  
}; -LzkM"  
\A7{kI  
public static String toString(int algorithm){ M$_E:u&D  
return name[algorithm-1]; 0,~||H{  
} ~wYGTm=(n  
x3DUz  
public static void sort(int[] data, int algorithm) { ,2oFt\`.r  
impl[algorithm-1].sort(data); 3r^Ls[ey  
} S!WG|75B  
#O 2g]YH  
public static interface Sort { "o_s=^U  
public void sort(int[] data); y_mTO4\C2  
} X})5XYvA*  
^Gi9&fS,  
public static void swap(int[] data, int i, int j) { 3 PkVMX  
int temp = data; Znr6,[U+q  
data = data[j]; I;1W6uD=  
data[j] = temp; |BGB60}]f  
} |"}oGL6-  
} HQ /D)D  
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