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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。 _D+pJ{@W  
插入排序: Z9wKjxu+  
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package org.rut.util.algorithm.support; ^AhV1rBB  
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import org.rut.util.algorithm.SortUtil; xVxN @[  
/** #q LsAw--Q  
* @author treeroot ly[j=vBV  
* @since 2006-2-2 ^_\S)P2c  
* @version 1.0 =hRo#]{(K  
*/ %_Q+@9  
public class InsertSort implements SortUtil.Sort{ Ec/&?|$  
tJ Bj9{  
/* (non-Javadoc) f \ E9u}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Vv+<M  
*/ l bs0i  
public void sort(int[] data) { Xwp6]lx  
int temp; mH.c`*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wqxChTbs  
} 0oK_uY 4g  
} >}T}^F  
} '\B0#z3  
r 4 $<,~  
} rEHlo[7^  
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冒泡排序: $^:s)Yv  
Qm_IU!b  
package org.rut.util.algorithm.support; WOg pDs  
bv^wE,+?o  
import org.rut.util.algorithm.SortUtil; f9K+o-P.h  
7 D(Eo{ue  
/** KvjsibI/Y  
* @author treeroot S>Z07d6&  
* @since 2006-2-2  g^l~AR  
* @version 1.0 E3hXs6P  
*/ ~P7zg!p/q  
public class BubbleSort implements SortUtil.Sort{ [][ze2+b  
HPMj+xH  
/* (non-Javadoc) Ec9%RAxl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t:x"]K  
*/ C/?x`2'  
public void sort(int[] data) { FuC#w 9_  
int temp; mzf~qV^T  
for(int i=0;i for(int j=data.length-1;j>i;j--){ DD5cUlOSu  
if(data[j] SortUtil.swap(data,j,j-1); r2%Qk  
} +~K) ~  
} %i6/= 'u  
} Etn uEU  
} l{I.l  
3/N~`!zeX  
} IM$ d~C  
BUCPO}I  
选择排序: 1%$t;R  
P3!JA)p6a  
package org.rut.util.algorithm.support; `pb=y}  
D\^mh{q(  
import org.rut.util.algorithm.SortUtil; `]`S"W7&  
U?%T~!  
/** z"nMR_TTu  
* @author treeroot HV&i! M@T  
* @since 2006-2-2 U5 ia|V  
* @version 1.0 cG"wj$'w  
*/ ;V?3Hwl  
public class SelectionSort implements SortUtil.Sort { 2FN E ;y(  
Cxd^i  
/* h ,\5C/  
* (non-Javadoc) aX,6y1  
* q eDXG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5O(U1 *  
*/ Nwj M=GG  
public void sort(int[] data) { u4tv= +jh  
int temp; b@S~ =  
for (int i = 0; i < data.length; i++) { 7{tU'`P>  
int lowIndex = i; wg+[T;0S  
for (int j = data.length - 1; j > i; j--) { j #~ S"t  
if (data[j] < data[lowIndex]) { XRmE  
lowIndex = j; \_(|$Dhq  
} nx(jYXVT  
} 0.S7uH%"  
SortUtil.swap(data,i,lowIndex); C#V_Gb  
} }hE!0q~MfM  
} /PVx  
0GW69 z  
} 5yyc 0UG  
4/V;g%0uN;  
Shell排序: TNDp{!<|L;  
Q@"}v_r4  
package org.rut.util.algorithm.support; ]u^ybW"  
7z_ZD0PxPc  
import org.rut.util.algorithm.SortUtil; YSzC's[  
ev #/v:$?  
/** jM-7  
* @author treeroot nA(5p?D+YB  
* @since 2006-2-2 Y <`X$  
* @version 1.0  1p K(tm  
*/ Q/@ pcU  
public class ShellSort implements SortUtil.Sort{ d/3bE*gr  
e(?1`1  
/* (non-Javadoc) yIf^vx_G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A{dqB  
*/ bk0<i*ju7(  
public void sort(int[] data) { r $[{sW  
for(int i=data.length/2;i>2;i/=2){ `,O"^zR)z  
for(int j=0;j insertSort(data,j,i); ]Exbuc  
} @Gw.U>"!C  
} Q;ZV`D/FA  
insertSort(data,0,1); e7y,zcbv  
} SQ*%d.1  
c'XSs  
/** xU2i&il^!  
* @param data Jz4;7/  
* @param j D9H%jDv  
* @param i S}VN(g  
*/  '[HBKn$`  
private void insertSort(int[] data, int start, int inc) { ~# \{'<  
int temp;  Ci 'V  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 7xM4=\~OG  
} :]4s;q:m  
} IA Ws}xIly  
} k& M~yb  
\PD%=~  
} ?VCp_Ji  
$> ;|  
快速排序: s1R#X~d  
39m8iI%w[  
package org.rut.util.algorithm.support; vTo+jQs^  
bxPJ5oT  
import org.rut.util.algorithm.SortUtil; A>,kmU5  
S(Z\h_m(  
/** WL|71?@C  
* @author treeroot :`K2?;DC8  
* @since 2006-2-2 NiEz3ODSi  
* @version 1.0 Xq_h C"s  
*/ A8QUfg@uK~  
public class QuickSort implements SortUtil.Sort{ k.})3~F-  
nltOX@P-  
/* (non-Javadoc) U\W$^r,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1cx%+-  
*/ XZQ-Ig18  
public void sort(int[] data) { m^zD']  
quickSort(data,0,data.length-1); ;pS+S0U   
} ?&!!(dWFH  
private void quickSort(int[] data,int i,int j){ ++UxzUd  
int pivotIndex=(i+j)/2; FRL;fF  
file://swap txm6[Io  
SortUtil.swap(data,pivotIndex,j); 'f0R/6h\3s  
gV$0J?Pr.  
int k=partition(data,i-1,j,data[j]); Vx:uqzw#  
SortUtil.swap(data,k,j); mE=Tj%+ x  
if((k-i)>1) quickSort(data,i,k-1); 2"k|IHs1  
if((j-k)>1) quickSort(data,k+1,j); H@1qU|4  
-GCU6U|  
} R5mb4  
/** i!fk'Yt%  
* @param data {MN6JGb|'  
* @param i YzJWS|]  
* @param j p.<d+S<  
* @return rLY I\  
*/ Sj:c {jyJd  
private int partition(int[] data, int l, int r,int pivot) { GY5JPl  
do{ xOr"3;^  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O>I%O^  
SortUtil.swap(data,l,r); =(~*8hJ  
} a^^OI|?  
while(l SortUtil.swap(data,l,r); {u0sbb(  
return l; @\:@_}Z`_}  
} S;/pm$?/  
!]9qQ7+R%  
} yRD tPK"E-  
O'(D:D?  
改进后的快速排序: s'd\"WaQV  
6;@:/kl t  
package org.rut.util.algorithm.support; YE:5'@Z  
f =A#:d  
import org.rut.util.algorithm.SortUtil; \ [M4[Qlq  
"rc QS H  
/** ,&s"f4Mft  
* @author treeroot RQu[FZT,  
* @since 2006-2-2 [z*1#lj S  
* @version 1.0 0+)1K U)I  
*/ @ *uZ+$  
public class ImprovedQuickSort implements SortUtil.Sort { D51s)?  
Z^Wv(:Nr  
private static int MAX_STACK_SIZE=4096; J9f]=1`  
private static int THRESHOLD=10; [g}0.J`_  
/* (non-Javadoc) ![eY%2;<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1bDAi2 H  
*/ &LG|YvMY6  
public void sort(int[] data) { eYn/F~5-  
int[] stack=new int[MAX_STACK_SIZE]; f+.sm  
+QOK]NJN  
int top=-1; YG5mzP<T  
int pivot; {$ pi};  
int pivotIndex,l,r; ,1.Td=lY$  
DGw*BN%`  
stack[++top]=0; }IdkXAB.  
stack[++top]=data.length-1; * bhb=~  
qv >l  
while(top>0){ Y4lNxvY  
int j=stack[top--]; |VjD. ]I  
int i=stack[top--]; 5/T#>l<  
h Z/p'  
pivotIndex=(i+j)/2; 7AqbfLO  
pivot=data[pivotIndex]; z5D*UOy5M  
$"}[\>e*{  
SortUtil.swap(data,pivotIndex,j); _ /Eg_dQ~@  
kY9$ M8b  
file://partition x8C *  
l=i-1; \/nSRAk  
r=j; -G'3&L4 D  
do{ ] r%fAm j  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 3qDbfO[  
SortUtil.swap(data,l,r); ``@e7~F{  
} )>iPx.hVSS  
while(l SortUtil.swap(data,l,r); ;?TM_%>  
SortUtil.swap(data,l,j); Z.rhM[*+0C  
>z% WW&Z'  
if((l-i)>THRESHOLD){ ~BE=z:  
stack[++top]=i; I]pz3!On4,  
stack[++top]=l-1; |Ho} D~  
} 5{IbKj|  
if((j-l)>THRESHOLD){ RSw; b.t7  
stack[++top]=l+1; k! x`cp  
stack[++top]=j; aWP9i &  
} g5x>}@ONq7  
<(xro/  
} 'F:Tv[qx  
file://new InsertSort().sort(data); x^ cJ~e2  
insertSort(data); Fiw^twz5  
} b `}hw"f  
/** Z Y5Pf 1  
* @param data !t{  
*/ JW=q'ibR  
private void insertSort(int[] data) { /)dyAX(  
int temp; "`4M4`'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); e5"5 U7  
} H|MAbx 7  
} b&d4(dk  
} *iyc,f^w  
|TF6&$>d  
} -q nOq[  
0,8RA_Ca}  
归并排序: C~nL3w  
3{Zd<JYg4-  
package org.rut.util.algorithm.support; \J;]g\&I"  
& IsPqO  
import org.rut.util.algorithm.SortUtil; ICc:k%wE7  
rZ.z!10  
/** mgodvX  
* @author treeroot x cZF_elt7  
* @since 2006-2-2 ,E@}=x9p  
* @version 1.0 N-Bw&hEZ  
*/ K!2%8Ej,J  
public class MergeSort implements SortUtil.Sort{ 5)0'$Xxqa0  
3a}c'$F>_'  
/* (non-Javadoc) !\OX}kHX5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F ^m;xy  
*/ W A*1_  
public void sort(int[] data) { Gq%,'am f  
int[] temp=new int[data.length]; N0ef5J JM`  
mergeSort(data,temp,0,data.length-1); :KGPQ@:O  
} hx4c`fOs  
X+N8r^&  
private void mergeSort(int[] data,int[] temp,int l,int r){ Im]6-#(9\|  
int mid=(l+r)/2; @~&^1%37)  
if(l==r) return ; EN8xn9M?  
mergeSort(data,temp,l,mid); D^U?!S&4~  
mergeSort(data,temp,mid+1,r); U]9k,#  
for(int i=l;i<=r;i++){ >McEuoZx9  
temp=data; 5dbj{r)s6i  
} ov >5+"q)  
int i1=l; K(P.i^k  
int i2=mid+1; w02C1oGfx  
for(int cur=l;cur<=r;cur++){ ^oClf(  
if(i1==mid+1) @Q&k6.{4Z  
data[cur]=temp[i2++]; H7meI9L  
else if(i2>r) g+(Y)9h&  
data[cur]=temp[i1++]; &^Gp  
else if(temp[i1] data[cur]=temp[i1++]; C<w&mFozL  
else <,U$Y>  
data[cur]=temp[i2++]; mHH>qW{`  
} .*J /F$  
} f9)0OHa  
_?eT[!oO8  
} K<50>uG  
r8[)Ccv  
改进后的归并排序: O]j<$GG!  
d b *J  
package org.rut.util.algorithm.support; #3A|Z=,5  
[N<rPHT  
import org.rut.util.algorithm.SortUtil; +c__U Qx  
$e{}SQ;fW  
/** 2lqy<o  
* @author treeroot ),^pi?  
* @since 2006-2-2 A8:eA  
* @version 1.0 VssWtL  
*/ )HX(-"c  
public class ImprovedMergeSort implements SortUtil.Sort { Y.#fpG'  
10bv%ZX7  
private static final int THRESHOLD = 10; ktp<o.f[  
8PWEQ<ev7>  
/* ,K|UUosS-#  
* (non-Javadoc) 2zuQeFsK  
* Yvu?M8aK!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,/!^ZS*  
*/ "z_},TCy  
public void sort(int[] data) { rFp>A`TJ  
int[] temp=new int[data.length];  P.mlk>r  
mergeSort(data,temp,0,data.length-1); t >.=q:  
} s%RG_"l  
H?V b   
private void mergeSort(int[] data, int[] temp, int l, int r) { Q\btl/?  
int i, j, k; Wr'1Y7z  
int mid = (l + r) / 2; y! QYdf?  
if (l == r) ,R-aO= %  
return; P>03 DkbB  
if ((mid - l) >= THRESHOLD) b # Llu$  
mergeSort(data, temp, l, mid); Lg|d[*;'7  
else /w2-Pgm-[\  
insertSort(data, l, mid - l + 1); ,lFp4 C  
if ((r - mid) > THRESHOLD) 9n"MNedqH  
mergeSort(data, temp, mid + 1, r); jX^_(Kg  
else QbY@{"" `  
insertSort(data, mid + 1, r - mid); FPM l;0{  
Iv*u#]{t  
for (i = l; i <= mid; i++) { wzBI<0]z  
temp = data; QGE0pWL-a  
} 8# x7q>?  
for (j = 1; j <= r - mid; j++) { Iyb_5 UmpF  
temp[r - j + 1] = data[j + mid]; Lu5X~6j"$  
} 3e1P!^'\  
int a = temp[l]; w"? RbA  
int b = temp[r]; LC\U6J't1  
for (i = l, j = r, k = l; k <= r; k++) { Z9Z\2t  
if (a < b) { MIb [}w=  
data[k] = temp[i++]; <d >!%  
a = temp; i4XiwjCHN  
} else { {faIyKtW  
data[k] = temp[j--];  M+:9U&>  
b = temp[j]; )ybF@emc  
} ~R50-O  
} z\woTL6D]  
} {Byh:-e<  
6RDy2JAOP  
/** yT~x7,  
* @param data BfD&e`KI  
* @param l E=`/}2  
* @param i c5: X$k\  
*/ Z[eWey_  
private void insertSort(int[] data, int start, int len) { 2( m#WK7>F  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); sz%_9;`dpL  
} mkl^2V13~  
} 1I)oT-~  
} C2\zbC[qm  
} A~ _2"  
*N"CV={No  
堆排序: n=|% H'U  
C7DwA/$D  
package org.rut.util.algorithm.support; <XN=v!2;  
4S[UJ%  
import org.rut.util.algorithm.SortUtil; e6^}XRyf  
4IvT}Us#+  
/** n 8 K6m(  
* @author treeroot 1l Cr?  
* @since 2006-2-2 Ok fxX&n  
* @version 1.0 ),|z4~  
*/ 3rjKwh7  
public class HeapSort implements SortUtil.Sort{ Y*S:/b~y  
U3Z-1G~*r  
/* (non-Javadoc) kg\8 (@h]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4I&Mdt<^D  
*/ u8M_2r  
public void sort(int[] data) { l5\V4  
MaxHeap h=new MaxHeap(); QHc([%oV  
h.init(data); O%N.;Ve  
for(int i=0;i h.remove(); 8@RtL,[d  
System.arraycopy(h.queue,1,data,0,data.length); (.VS&Kv#U  
} \ Ce*5h  
)a x>*  
private static class MaxHeap{ /?($W|9+l  
;mvVo-r*q  
void init(int[] data){ +.OdrvN4)  
this.queue=new int[data.length+1]; HrfS^B  
for(int i=0;i queue[++size]=data; OA(.&5]  
fixUp(size); F\L!.B  
} D /GE-lq  
} RBBmGZ  
>k/cm3  
private int size=0; U4<c![Pp.  
L"n)fe$  
private int[] queue; 6U.|0mG[  
&/WE{W  
public int get() { ~E!kx  
return queue[1]; | L1+7  
} 5t"FNL <(M  
-e sQyLx  
public void remove() { -6~.;M 5  
SortUtil.swap(queue,1,size--); P;mp)1C  
fixDown(1); Bv' %$}}-  
} j<k6z   
file://fixdown #<ST.f@*  
private void fixDown(int k) { C/'w  
int j; M.r7^9P  
while ((j = k << 1) <= size) { w( _42)v]g  
if (j < size %26amp;%26amp; queue[j] j++; ZfK[o{9>  
if (queue[k]>queue[j]) file://不用交换 !?/:p.  
break; P^48]Kj7  
SortUtil.swap(queue,j,k); 7 )r L<+  
k = j; _53~D=  
} mt`CQz"_  
} RHMXPsj  
private void fixUp(int k) { Lj9RF<39g  
while (k > 1) { t(9q 6x3|e  
int j = k >> 1; }m~MN4 l  
if (queue[j]>queue[k]) @un+y9m[C  
break; ;i'[c`  
SortUtil.swap(queue,j,k); Z7RBJK7|.  
k = j; :GO"bsjL  
} nw0#gDI|  
} /of K7/  
2J8:_Ql3I  
} u+KZ. n/  
J9p4\=9  
} H;l_;c`  
-Ou.C7ol  
SortUtil: tiHR&v  
q$mc{F($D  
package org.rut.util.algorithm; ]z/R?SM  
"\KBF  
import org.rut.util.algorithm.support.BubbleSort; IA({RE  
import org.rut.util.algorithm.support.HeapSort; mbGma  
import org.rut.util.algorithm.support.ImprovedMergeSort; kFV, Fg  
import org.rut.util.algorithm.support.ImprovedQuickSort; . R/y`:1:W  
import org.rut.util.algorithm.support.InsertSort; j)6p>6  
import org.rut.util.algorithm.support.MergeSort; |E.BGdS  
import org.rut.util.algorithm.support.QuickSort; [nPs  
import org.rut.util.algorithm.support.SelectionSort; /:' >-253  
import org.rut.util.algorithm.support.ShellSort; n2hV}t9O  
>([,yMIY  
/** 3m` >D e  
* @author treeroot ~IS8DW$;  
* @since 2006-2-2 fyA-*)oHv  
* @version 1.0 c$%*p (zY  
*/ nGkSS_X  
public class SortUtil { =@?[.`  
public final static int INSERT = 1; %&| uT  
public final static int BUBBLE = 2; R]iV;j|  
public final static int SELECTION = 3; "cPg_-n  
public final static int SHELL = 4; z+yIP ?s}(  
public final static int QUICK = 5; C?T\5}h  
public final static int IMPROVED_QUICK = 6; G+t:]\  
public final static int MERGE = 7; &Xqxuy ]J  
public final static int IMPROVED_MERGE = 8; mV$ebFco0  
public final static int HEAP = 9; |#kY_d)10  
rUj\F9*5#  
public static void sort(int[] data) { ]b!n ;{5  
sort(data, IMPROVED_QUICK); -` U |5  
} EZ]4cd/i  
private static String[] name={ N}K [Q=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bYnq,JRA  
}; $2?AJ/2r$b  
0!_?\)X  
private static Sort[] impl=new Sort[]{ #e|o"R;/`  
new InsertSort(), q!eE~O;A  
new BubbleSort(), aQtd6L+ J  
new SelectionSort(), @wI>0B  
new ShellSort(), /[.V(K D  
new QuickSort(), !S#3mT-  
new ImprovedQuickSort(), 4JAz{aw'b  
new MergeSort(), . : Wf>:  
new ImprovedMergeSort(), j)?M  
new HeapSort() ehr-o7](  
}; *WQ?r&[_'  
*;Mi/^pzK  
public static String toString(int algorithm){ |'nQvn:{  
return name[algorithm-1]; VAz4@r7hkq  
} ApXf<MAy  
'z(Y9%+a  
public static void sort(int[] data, int algorithm) { f +{=##'0  
impl[algorithm-1].sort(data); <gkE,e9  
} alaL/p{O  
Yi*F;V   
public static interface Sort { &>,;ye>A  
public void sort(int[] data); K8;SE !  
} Z~~6y6p  
3R+% C*7  
public static void swap(int[] data, int i, int j) { o$sD9xx  
int temp = data; %o0b~R  
data = data[j]; P0,]`w  
data[j] = temp; IR6W'vA  
} @MES.g  
} / \w4k  
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