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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。 &l.^UQ   
插入排序: (r|T&'yK  
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package org.rut.util.algorithm.support; < d]|5  
kal8k-$#  
import org.rut.util.algorithm.SortUtil; s=$7lYX  
/** nqH^%/7)A@  
* @author treeroot _5)#{ o<  
* @since 2006-2-2 M{S7ia"s  
* @version 1.0 0{ ,zE  
*/ /X:lt^?%I  
public class InsertSort implements SortUtil.Sort{ a~%ej.)l  
JC#@sJ4az)  
/* (non-Javadoc) ^d"J2n,7L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ke%zp-2c  
*/ X1-s,[j'  
public void sort(int[] data) { J!H5{7.efN  
int temp; \w:u&6,0O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); (kHR$8GFM  
} j@ "`!uPz  
} RpXQi*c0  
} J.&q[  
SUEw5qitB  
} *HC8kD a%$  
Y1~SGg7(@  
冒泡排序: =j{jylC  
`~}7k)F(  
package org.rut.util.algorithm.support; X=hgLK^3<,  
8N`$7^^  
import org.rut.util.algorithm.SortUtil; *"5a5.`%,  
`%Ghtm*  
/** <_>6a7ra  
* @author treeroot /;0>*ft4  
* @since 2006-2-2 z>{KeX:  
* @version 1.0 yI%> w4Z  
*/ \XN5))  
public class BubbleSort implements SortUtil.Sort{ @b/2'  
KH7]`CU  
/* (non-Javadoc) KCFwO'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b[k 1)R"  
*/ GlZ9k-ZRF  
public void sort(int[] data) { K8 Y/XEK  
int temp; 5 QeGx3'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jysV%q 3  
if(data[j] SortUtil.swap(data,j,j-1); Lwcw%M]  
} ;Y '\:  
} </Id';|v  
} b>z.d-  
} s`J=:>9*  
hq*JQb;Y}  
} \,EPsQV0?  
#R8l"]fxr?  
选择排序: L1xD$wl  
iK]g3ew|  
package org.rut.util.algorithm.support; 5{a( +'  
vw]nqS~N  
import org.rut.util.algorithm.SortUtil; ##@#:B  
9vTQ^*b m  
/** 8_m9CQ6 i  
* @author treeroot tb{{oxa,k  
* @since 2006-2-2 ]mj+*l5  
* @version 1.0 55DzBV  
*/ wUeOD.;#F  
public class SelectionSort implements SortUtil.Sort { |BkY"F7m9  
{t:ND  
/* -X[[ OR9+  
* (non-Javadoc) \?^wu  
* iq:[+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 48Lmy<}*  
*/ (3h*sd5ly  
public void sort(int[] data) { b1u'ukDP\  
int temp; % 4"~O _S  
for (int i = 0; i < data.length; i++) { DG\YZV4  
int lowIndex = i; ])L'Rk#4  
for (int j = data.length - 1; j > i; j--) { -9I%   
if (data[j] < data[lowIndex]) { 5ecz'eA%  
lowIndex = j; }tZAU\z  
} h /QP=Zd  
} ug,|'<G+  
SortUtil.swap(data,i,lowIndex); N^]>R :Stu  
} 4Jr[8P0/A9  
} \#jDQ  
/&d`c=nH  
} sri#L+I  
RM1uYFs<  
Shell排序: CD1=2  
_0["J:s9  
package org.rut.util.algorithm.support; :"^< aLj  
PL$F;d  
import org.rut.util.algorithm.SortUtil; UMwMXmZNJ  
.4W>9 8  
/** P i!r}m  
* @author treeroot )hW {>Y3x  
* @since 2006-2-2 {l&2Kd*  
* @version 1.0 %QgAilj,  
*/ b DS1'Ce  
public class ShellSort implements SortUtil.Sort{ ^(JHRH~=h  
8@KFln )[  
/* (non-Javadoc) SWsv,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Qf>Pb$c$U  
*/ mMAr8~ A=  
public void sort(int[] data) { B 9Q. s  
for(int i=data.length/2;i>2;i/=2){ XHM"agrhSQ  
for(int j=0;j insertSort(data,j,i); W+ '}O<  
} }l?_Cfvu  
} U<Y'.!  
insertSort(data,0,1); W7=_u+0d  
} (OcNC/9  
)v{41sM+  
/** .0E4c8R\X  
* @param data by]|O  
* @param j )UZ0gfx  
* @param i x5z4Yv^ m  
*/ ZV]e-  
private void insertSort(int[] data, int start, int inc) { ,(27p6!  
int temp; Fg\| e%  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); \ e8*vos  
} nYy}''l<  
} Sje0:;;|  
} *\:_o5o%[T  
[F)/mN  
} ?U/Wio$@  
|id79qY7g  
快速排序: XQJ^)d00h  
s!/holu  
package org.rut.util.algorithm.support; vZeYp  
!8@rK$DB  
import org.rut.util.algorithm.SortUtil; {/A)t1nL  
a!y,!EB+Qu  
/** nuO3UD3  
* @author treeroot $jed{N7Y  
* @since 2006-2-2 hY= s9\  
* @version 1.0 JM-ce8U  
*/ oUvk2]H  
public class QuickSort implements SortUtil.Sort{ <%>n@A  
7{^4 x#NO  
/* (non-Javadoc) b({Nf,(a2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RD$tc~@UB  
*/ >@^yj+k  
public void sort(int[] data) { q$?7 ~*M;x  
quickSort(data,0,data.length-1); uz#PBV8Q  
} ]]=-AuV.  
private void quickSort(int[] data,int i,int j){ U 'CfP9=  
int pivotIndex=(i+j)/2; blfE9Oy  
file://swap {p e7]P?  
SortUtil.swap(data,pivotIndex,j); HCx%_9xlm  
B>|U-[A  
int k=partition(data,i-1,j,data[j]); 8gbm"!  
SortUtil.swap(data,k,j); #A/]Vs$  
if((k-i)>1) quickSort(data,i,k-1); t&9as}  
if((j-k)>1) quickSort(data,k+1,j); RCh$j&Tn  
%g0z) J  
} #x5N{8  
/** mfngbFa1  
* @param data |J<pLz  
* @param i _(6B.  
* @param j [+ 'B Q  
* @return wyrI8UY  
*/ - Y8ks7  
private int partition(int[] data, int l, int r,int pivot) { rO(TG  
do{ HZDaV&)@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); YQ @dl  
SortUtil.swap(data,l,r); \)otu\3/  
} RO%tuU,-  
while(l SortUtil.swap(data,l,r); K=c=/`E  
return l; c8-69hb?  
} OY^n0Zof,  
-eR!qy:.]5  
} J+@MzkpK  
5X`w&(]m  
改进后的快速排序: XSp x''l  
jom} _  
package org.rut.util.algorithm.support; \]U<hub  
hC|5e|S  
import org.rut.util.algorithm.SortUtil; [%7;f|p?  
/lr1hW~Dbk  
/** K_AtU/  
* @author treeroot x&R9${e%  
* @since 2006-2-2 #a(%(k S  
* @version 1.0 t+3   
*/ >[|GC/C  
public class ImprovedQuickSort implements SortUtil.Sort { lrs0^@.+  
;]gsJ9FK<  
private static int MAX_STACK_SIZE=4096; :F^$"~(,  
private static int THRESHOLD=10; ~KAp\!,  
/* (non-Javadoc) d; mmM\3]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8! H8[J  
*/ ASKAgU"h  
public void sort(int[] data) { X,WQ'|rC  
int[] stack=new int[MAX_STACK_SIZE]; <JL\?)}n  
K0 O-WJ  
int top=-1; ]pOYVf *$  
int pivot; 9h:jFhsA9  
int pivotIndex,l,r; Lp:Nw4_  
nDHHYp  
stack[++top]=0; /nC{)s?S'  
stack[++top]=data.length-1; p}YI#f in/  
%\}dbYS '  
while(top>0){ | rE!  
int j=stack[top--]; 5q5 )uv"  
int i=stack[top--]; Q7~'![(a  
@<D'-mMt  
pivotIndex=(i+j)/2; tt6. jo  
pivot=data[pivotIndex]; UAsF0&]  
[&h#iTRT  
SortUtil.swap(data,pivotIndex,j); Io$w|~x  
ZnvEv;P  
file://partition KTG:I@|C  
l=i-1; k4qLB1&,  
r=j; z5XYpi_;[  
do{ !,cQ'*<W8-  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /d0Q>v.g  
SortUtil.swap(data,l,r); 6=ZRn gQ  
} 5^/,aI  
while(l SortUtil.swap(data,l,r); <|{L[  
SortUtil.swap(data,l,j); = n+q_.A  
%`xV'2H  
if((l-i)>THRESHOLD){ >_;kTy,  
stack[++top]=i; Nb~,`bu,2  
stack[++top]=l-1; + ,@ FxZl  
} H$z>OS_6U  
if((j-l)>THRESHOLD){ &Ki> h  
stack[++top]=l+1; j0g5<M  
stack[++top]=j; J[ e}  
} F&=I7i  
]3n, AHA  
} c3=-Mq9Q  
file://new InsertSort().sort(data); ,>D ja59  
insertSort(data); )l`1)Ea~  
} h&)fu{   
/** 3jvx2  
* @param data :PgF  
*/ 8)L'rW{q#  
private void insertSort(int[] data) { EzR%w*F>Q  
int temp; R[x7QlA;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); {eEBrJJeB  
} kUNj4xp)  
} Ct4LkmD  
} lV P9=  
J'o DOn.M  
} (C,e6r Y  
R<"2%oY  
归并排序: %tT"`%(+  
%lN2n,AK  
package org.rut.util.algorithm.support; nN>J*02(  
<^d!Vzr]  
import org.rut.util.algorithm.SortUtil; cNe0x2Z$?  
6ayy[5tW  
/** :1:3Svb<Y  
* @author treeroot 8]S,u:E:N  
* @since 2006-2-2 ~mtTsZc  
* @version 1.0 _b>F#nD,'%  
*/ ):e+dt  
public class MergeSort implements SortUtil.Sort{ ,Z^Ca15z  
eymi2-a<  
/* (non-Javadoc) ,mBZ`X@N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &|)hCJu  
*/ $j57LY|r  
public void sort(int[] data) { DW#Bfo  
int[] temp=new int[data.length]; 3)}(M  
mergeSort(data,temp,0,data.length-1); }K2 /&kZ  
} !_qskDc-  
b)N[[sOt  
private void mergeSort(int[] data,int[] temp,int l,int r){ FC6xFg^  
int mid=(l+r)/2; d:A}CBTSY  
if(l==r) return ; e|yX QTlvL  
mergeSort(data,temp,l,mid); }*NF&PD5RU  
mergeSort(data,temp,mid+1,r); *P`v^&  
for(int i=l;i<=r;i++){ *RBV'b  
temp=data; (B@X[~  
} )T9;6R$b  
int i1=l; Rq) 0i}F  
int i2=mid+1; d^PD#&"g  
for(int cur=l;cur<=r;cur++){ :4|M jn  
if(i1==mid+1) 2+z1h^)W  
data[cur]=temp[i2++]; )B6# A0  
else if(i2>r) uS~#4;R   
data[cur]=temp[i1++]; [!EXMpq'  
else if(temp[i1] data[cur]=temp[i1++]; hR-K@fS%l'  
else yf!,4SUkU  
data[cur]=temp[i2++]; :Zza)>l  
} kB o;h.[l  
} -LTKpN`[@  
]nQ+nH  
} X/l;s  
Y,C=@t@_  
改进后的归并排序: Q $]YD pCM  
/#f^n]v  
package org.rut.util.algorithm.support; v,{h:  
KF_?'X0=  
import org.rut.util.algorithm.SortUtil; f-4.WW2FN  
'TL2%T/)t  
/** JBz}|M D  
* @author treeroot k'Gw!p}  
* @since 2006-2-2 -ey)J +?t  
* @version 1.0 TjxA#D)   
*/ qe?Qeh(!X  
public class ImprovedMergeSort implements SortUtil.Sort { uMvb-8  
D?^Y`G$.  
private static final int THRESHOLD = 10; (ew} gJ  
b^x07lO  
/* t0q_>T-kt  
* (non-Javadoc) Vo\H<_=G  
* yY Y Nu`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L;S}s, 2x  
*/ qy ,"X)^#  
public void sort(int[] data) { GX  }q9  
int[] temp=new int[data.length]; /4*WDiH  
mergeSort(data,temp,0,data.length-1); #jBN?Z#  
} :=*}htP4C  
pLnB)z?  
private void mergeSort(int[] data, int[] temp, int l, int r) { h./P\eDc  
int i, j, k; yoQ\lk  
int mid = (l + r) / 2; 4/'N|c.  
if (l == r) XV>@B $hu  
return; :Xfn@>;3ui  
if ((mid - l) >= THRESHOLD) &+01+-1hW  
mergeSort(data, temp, l, mid); 6V1:qp/6  
else $e }n  
insertSort(data, l, mid - l + 1); l'6d4 DZ  
if ((r - mid) > THRESHOLD) !77NG4B  
mergeSort(data, temp, mid + 1, r); )MSZ2)(  
else @E%DP9.I  
insertSort(data, mid + 1, r - mid); H=p`T+  
-R0/o7  
for (i = l; i <= mid; i++) { zT[6eZ8m  
temp = data; w^HjZV  
} (u&`Ij9  
for (j = 1; j <= r - mid; j++) { e4\dpvL  
temp[r - j + 1] = data[j + mid]; ^2S# Uk  
} RNWX.g)b  
int a = temp[l]; b*EXIzQ  
int b = temp[r]; r8[T&z@_  
for (i = l, j = r, k = l; k <= r; k++) { SJk>Jt=  
if (a < b) { ys8Q.oBv_`  
data[k] = temp[i++]; )&,{?$.  
a = temp; Qs9OC9X1  
} else { &eQJfc\a  
data[k] = temp[j--]; aC!EWgwW[  
b = temp[j]; .WX,Nd3@  
} wvN`R  
} <{Q'&T  
} |quij0_'e  
F}Srn;V  
/** X(Qu{HhI  
* @param data $ 4m*kQ  
* @param l $SY]fNJQ  
* @param i I4t*?  
*/ TTZe$>f  
private void insertSort(int[] data, int start, int len) { ~aTKG|74  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <jA105U"m>  
} p?# pT}1  
} 8 lT{1ro  
} },@``&e  
} 5MF#&v  
C&<~f#lB  
堆排序: )8,|-o=  
7K;!iX<d  
package org.rut.util.algorithm.support; @?k J).  
#_JYh?  
import org.rut.util.algorithm.SortUtil; Q@S-f:!  
$IX\O  
/** O )d[8jw"  
* @author treeroot F #`=oM $5  
* @since 2006-2-2 nP3  E  
* @version 1.0 t;NV $!!  
*/ `yO'[2  
public class HeapSort implements SortUtil.Sort{ HrM$NRhu  
rD &D)w  
/* (non-Javadoc) F<|t\KOW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B^v8,;jZT  
*/ 8sOQ9  
public void sort(int[] data) { O;uG?.\  
MaxHeap h=new MaxHeap(); ,$lemH1d  
h.init(data); i=S~(gp  
for(int i=0;i h.remove(); vB0RKk}d5  
System.arraycopy(h.queue,1,data,0,data.length); .; Q:p*  
} `3c CH  
uLR<FpM  
private static class MaxHeap{ vB'>[jvA|  
l'[A? %L%{  
void init(int[] data){ pG3k   
this.queue=new int[data.length+1]; Cu;5RSr2Z  
for(int i=0;i queue[++size]=data; v,@F|c?_S  
fixUp(size); ";SiL{Z  
} ]?+{aS-]?k  
} jgv`>o%<W  
>ut" OL9J  
private int size=0; i^msjA  
L%"LlS g  
private int[] queue; H`9Uf)  
(p#0)C  
public int get() { D{8PQ2x>  
return queue[1]; 3SttHu0X  
} c9"r6j2m5  
;&b.T}Nf06  
public void remove() { &7e)O=  
SortUtil.swap(queue,1,size--);  VqSc;w  
fixDown(1); AIYmS#V1W2  
} $sHP\{  
file://fixdown 2,q}N q  
private void fixDown(int k) { \3f& 7wU  
int j; ]`g@UtD9`  
while ((j = k << 1) <= size) { W-Hoyn>?2  
if (j < size %26amp;%26amp; queue[j] j++; n2B){~vE  
if (queue[k]>queue[j]) file://不用交换 ').}Nz  
break; tBbOY}.VD  
SortUtil.swap(queue,j,k); kYzKU2T\W  
k = j; >Gml4vGK  
} (V`Md\NL`  
} i%m"@7.kk  
private void fixUp(int k) { `F YjQ e"p  
while (k > 1) { =@&cHY  
int j = k >> 1; DyJ.BQdk)  
if (queue[j]>queue[k]) AlE8Xu9UB  
break; \_V-A f{6  
SortUtil.swap(queue,j,k); <EO$]>;0  
k = j; dO> VwP  
} q[q?hQ/b  
} B%CTOi  
CAq/K?:8  
} S-Y=-"  
f5AjJYq1  
} \wcam`f  
{%lXYMyu  
SortUtil: ^&@w$  
>@xrs  
package org.rut.util.algorithm; &Mq~T_S  
@hQlrq5c  
import org.rut.util.algorithm.support.BubbleSort; Q/uwQ o/  
import org.rut.util.algorithm.support.HeapSort; g- AHdYJ  
import org.rut.util.algorithm.support.ImprovedMergeSort; [qUN4x5b  
import org.rut.util.algorithm.support.ImprovedQuickSort; }D411228  
import org.rut.util.algorithm.support.InsertSort; jp8@vdRg  
import org.rut.util.algorithm.support.MergeSort; -i0(2*<  
import org.rut.util.algorithm.support.QuickSort; `nM/l @  
import org.rut.util.algorithm.support.SelectionSort; o8/ ;;*  
import org.rut.util.algorithm.support.ShellSort; 4;n6I)&.(  
,YTIC8qKr  
/** -}O1dEn.  
* @author treeroot vE@!{*  
* @since 2006-2-2 ~(!XY/0e  
* @version 1.0 f`9 b*wV  
*/ ?Nf>]|K:Q  
public class SortUtil { C2LL|jp*  
public final static int INSERT = 1; An;MVA  
public final static int BUBBLE = 2; 5pr"d@.  
public final static int SELECTION = 3; +/,icA}PI  
public final static int SHELL = 4; _v Sn`  
public final static int QUICK = 5; drzL.@h|  
public final static int IMPROVED_QUICK = 6; :I -V_4b  
public final static int MERGE = 7; .+7;)K   
public final static int IMPROVED_MERGE = 8; 7S/G B  
public final static int HEAP = 9; HEA#bd\  
,@1p$n  
public static void sort(int[] data) { A+6 n#  
sort(data, IMPROVED_QUICK); \drqG&wl  
} qmO6,T-|  
private static String[] name={ @1*ohdHH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +fvaUV_-  
}; FZ!`B]]le,  
H 0+dV3  
private static Sort[] impl=new Sort[]{ O+g3X5f+  
new InsertSort(), * #jsgj[  
new BubbleSort(), mPI8_5V8]  
new SelectionSort(), }ci#>  
new ShellSort(), 3"o"fl  
new QuickSort(), s! n<}C  
new ImprovedQuickSort(), }*.0N;;C  
new MergeSort(), *K> l*l(f]  
new ImprovedMergeSort(), =]:>"_jN  
new HeapSort() GKN%Tv:D_  
}; GpZ c5c  
!Mi;*ZR  
public static String toString(int algorithm){ 64hk2a8  
return name[algorithm-1]; Q+g!V5'  
} b Q]/?cCYV  
-S3MH1TZ  
public static void sort(int[] data, int algorithm) { 0-~\ W(  
impl[algorithm-1].sort(data); X]\ \,  
} :_!8 WB  
.e=C{  
public static interface Sort { A.hd Kl  
public void sort(int[] data); 1V8-^  
} {?'fyEeg  
R|wGU)KEc'  
public static void swap(int[] data, int i, int j) { _.L4e^N&UO  
int temp = data; | WvUq  
data = data[j]; w)Covz'uf  
data[j] = temp; @V03a )6,h  
} Eb=}FuV  
} . 'Y]R3\M+  
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