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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。 \o3s&{+ y,  
插入排序: H^`J(J+  
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package org.rut.util.algorithm.support; #Tag"b`  
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import org.rut.util.algorithm.SortUtil; ZAeJTCCk  
/** ]9'F<T= $_  
* @author treeroot N+5f.c+S-  
* @since 2006-2-2 {R[V  
* @version 1.0 RhT:]  
*/ =h=-&DSA  
public class InsertSort implements SortUtil.Sort{ #lSGH 5Fp?  
>ifys)wg>  
/* (non-Javadoc) zVe,HKF/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "}%j'  
*/ $sb@*K}:4  
public void sort(int[] data) { H8B.c%_|U  
int temp; p[%~d$JUq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); dD'KP4Io@  
} n ~&ssFC  
} wv\"(e7(  
} r4gLoHD)  
'Z,7{U1P  
} *%_M?^  
Xkx&'/QG,U  
冒泡排序: pNuU{:9 B0  
nehk8+eV_  
package org.rut.util.algorithm.support; 2$b1q!g<  
vO"E4s  
import org.rut.util.algorithm.SortUtil; J|o<;9dg1  
KyDd( 'i  
/** q3-cWfU  
* @author treeroot }TuMMO4+  
* @since 2006-2-2 1rue+GL  
* @version 1.0 CN-4FI)1D9  
*/ ;Z;` BGZJ  
public class BubbleSort implements SortUtil.Sort{ cFJZ|Ld  
rW~G'  
/* (non-Javadoc) +]yVSns 3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'Cz]p~oF  
*/ eYjF"Aq  
public void sort(int[] data) { "]'W^Fg  
int temp; x 0vW9*&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ $Op:-aW&  
if(data[j] SortUtil.swap(data,j,j-1); prIJjy-F  
} G%i&C)jZ  
} ~"wnlG-:  
} [{T/2IGq  
} %4#ChlXB  
ntL%&wY  
} Q'ib7R;V,  
Zw/??Tq b  
选择排序: K7(GdKZe  
**6X9ZIX[  
package org.rut.util.algorithm.support; _$HCNFdh  
xs "\c7pC  
import org.rut.util.algorithm.SortUtil; $SniQ  
@}+B%R  
/** -wNhbV2  
* @author treeroot  Spo[JQ%6  
* @since 2006-2-2 ,s@S`KS0  
* @version 1.0 chE}`I?  
*/ P;&U3i  
public class SelectionSort implements SortUtil.Sort { NX]6RZr-  
(15.?9  
/* NB(  GE  
* (non-Javadoc) '$ G%HUn  
* 9N) Ea:N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C8:y+pH_U;  
*/ )^E6VD&6  
public void sort(int[] data) { %6@m~;c0  
int temp; pf=CP%L  
for (int i = 0; i < data.length; i++) { {gDoktC@M  
int lowIndex = i; ^*~4[?]S  
for (int j = data.length - 1; j > i; j--) { *iPBpEWC  
if (data[j] < data[lowIndex]) { &,]yqG 2  
lowIndex = j; A  j>  
} )hK;27m4  
} UC00zW<Z@"  
SortUtil.swap(data,i,lowIndex);  3+M+5  
} XR#?gx.}  
} ty9(mtH+  
aprgThoD  
} @XKVdtG  
3);W gh6  
Shell排序: 8{CBWXo$)  
IF?  
package org.rut.util.algorithm.support; K5+ONA<c  
5Ak>/QF9  
import org.rut.util.algorithm.SortUtil; ]}_Ohe]X  
gGbqXG^  
/** u)P)r,  
* @author treeroot `M_w^&6+n  
* @since 2006-2-2 %9t=Iu*  
* @version 1.0 .8CfCRq  
*/ q&wv{  
public class ShellSort implements SortUtil.Sort{ ~~WX#Od*$  
%BRll  
/* (non-Javadoc) kAoh#8=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *AYjMCo  
*/ :Ui'x8yt  
public void sort(int[] data) { H<`7){iG  
for(int i=data.length/2;i>2;i/=2){ M;@/697G  
for(int j=0;j insertSort(data,j,i); `{J(S'a`  
} >9Y0t^Fl  
} _#o75*42tT  
insertSort(data,0,1); r9^~I  
} TIP H#W:v  
jouT9~[L'  
/** T\T>\&nY+|  
* @param data 7I{rhA  
* @param j CH=k=)() ]  
* @param i 7{ QjE  
*/ V%J_iY/BUb  
private void insertSort(int[] data, int start, int inc) { #w)D ml  
int temp; O'W[/\A56M  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 2fdC @V  
} 0a v2w5>af  
} z8w@pT  
} 7!8R)m^1[  
xa%2w]  
} J)=Ts({  
=Xb:.  
快速排序: ,V=]QHcg  
 OV$|!n  
package org.rut.util.algorithm.support; dxWG+S  
8d\/  
import org.rut.util.algorithm.SortUtil; Oj.xJ(uX+v  
TbhsOf!  
/** to'O;f">n  
* @author treeroot D?? \H\  
* @since 2006-2-2 CK} _xq2b  
* @version 1.0 aw'o=/a8  
*/ bRc~e@  
public class QuickSort implements SortUtil.Sort{ [Z+E_Lbz  
(0bXsfe  
/* (non-Javadoc) Jd/XEs?<q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K;(t@GL?  
*/ JuXuS  
public void sort(int[] data) { dw< b}2  
quickSort(data,0,data.length-1); !tv+,l&L  
} 0[SrRpD  
private void quickSort(int[] data,int i,int j){ BQ77 n2(@  
int pivotIndex=(i+j)/2; @?<1~/sfL  
file://swap o7s<G8;?  
SortUtil.swap(data,pivotIndex,j); 4B=@<( H  
VWE`wan<  
int k=partition(data,i-1,j,data[j]); CZ/:(sOJ  
SortUtil.swap(data,k,j); fhQ}Z%$  
if((k-i)>1) quickSort(data,i,k-1); ?N!.:~~k  
if((j-k)>1) quickSort(data,k+1,j); ;!/g`*?  
@RVj~J.A  
} Pt %EyFG  
/** BYsQu.N  
* @param data 6SmawPPP  
* @param i yDBMm^  
* @param j &GLe4zEh  
* @return }q[IhjD%  
*/ U10:@Wzh  
private int partition(int[] data, int l, int r,int pivot) { H=7Nh6v  
do{ RB/;qdqR  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 2o9IP>#u  
SortUtil.swap(data,l,r); D,;6$Pvg^  
} G_n~1?  
while(l SortUtil.swap(data,l,r); }h`ddo  
return l; bjGQ04da  
} 1 gx(L*y,  
{'eF;!!Dy  
} ]5i]2r1  
(e6KSRh2fF  
改进后的快速排序: _'DZoOH|VE  
iQ_^MzA  
package org.rut.util.algorithm.support; } {m.\O  
g|V0[Hnq6  
import org.rut.util.algorithm.SortUtil; YXjWk),  
TP&&' 4?D1  
/** 5iP{)  
* @author treeroot v?(9ZY]  
* @since 2006-2-2 &IgH]?t  
* @version 1.0 cu$i8$?t   
*/ $79-)4;z4  
public class ImprovedQuickSort implements SortUtil.Sort { t:.ZvA3  
Z }Z]["q  
private static int MAX_STACK_SIZE=4096; *f( e`3E  
private static int THRESHOLD=10; }=JuC+#~n  
/* (non-Javadoc) 05Go*QvV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rA#Ji~  
*/ Y!L<& sl   
public void sort(int[] data) { G .k\N(l  
int[] stack=new int[MAX_STACK_SIZE]; [I7([l1Wvd  
#^&.*' z%z  
int top=-1; 66shr  
int pivot; ,2 _!hm /  
int pivotIndex,l,r; @jevY81)  
%oEvp{I  
stack[++top]=0; x$\w^h\F  
stack[++top]=data.length-1; h|t\rV^  
-z$&lP]  
while(top>0){ xKC{P{:  
int j=stack[top--]; @Tg +Kt  
int i=stack[top--]; eMV@er|  
8 |iMD1  
pivotIndex=(i+j)/2; sz+Uq]Mn  
pivot=data[pivotIndex]; VyL|d^'f_  
J?N9*ap)  
SortUtil.swap(data,pivotIndex,j); o@g/,V $  
s.G6?1VXlY  
file://partition jW!)5(B[A  
l=i-1; 1 |zy6  
r=j; 5uufpvah  
do{ !2Q>   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); b5Pakz=jNM  
SortUtil.swap(data,l,r); mMRdnf!Uid  
} bkfk9P  
while(l SortUtil.swap(data,l,r); Rk.GrLp  
SortUtil.swap(data,l,j); koAM",5D  
[v$NxmRu  
if((l-i)>THRESHOLD){ #[{xEVf  
stack[++top]=i; mjz<,s`D  
stack[++top]=l-1; '+{dr\nJ  
} l]o)KM<  
if((j-l)>THRESHOLD){ 6 C|]Fm  
stack[++top]=l+1; 'uOzC"_yF  
stack[++top]=j; \4e6\6 +  
} nmrYBw>  
%[C-KQH  
} 3V`.<  
file://new InsertSort().sort(data); _z3YB  
insertSort(data); `Gp!Y  
} _C97G&  
/** oPA [vY  
* @param data fCxF3m(O  
*/ *PVv=SU  
private void insertSort(int[] data) { !p~K;p,  
int temp; |r=.}9 -  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a \PvRW*I  
} M:Aik&  
} E5b JIC(  
} p-t*?p C  
d@72z r  
} .4NQ2k1io  
op%?V :  
归并排序: (\6R"2  
dnP3{!"b  
package org.rut.util.algorithm.support; on q~wEr  
cOr@dUSL  
import org.rut.util.algorithm.SortUtil; SAEV "  
32sb$|eQq  
/** KVrK:W--p  
* @author treeroot mTW@E#)n  
* @since 2006-2-2 `1[GY){?)  
* @version 1.0 bu2'JIDR  
*/ t[ZumQ@HC  
public class MergeSort implements SortUtil.Sort{ !F|iL  
!B3lsXLSY  
/* (non-Javadoc) hoQ?8}r:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #`0iN+qh  
*/ 7o4 vf~  
public void sort(int[] data) { rGe^$!QB  
int[] temp=new int[data.length]; ^{W#ut>IN  
mergeSort(data,temp,0,data.length-1); :tA|g  
} Um$a9S8b&  
ymsqJ   
private void mergeSort(int[] data,int[] temp,int l,int r){ Mwdw7MZ"S  
int mid=(l+r)/2; 69v[* InSd  
if(l==r) return ; ] cv|A^  
mergeSort(data,temp,l,mid); 0+\~^  
mergeSort(data,temp,mid+1,r); ?Ze3t5Ll  
for(int i=l;i<=r;i++){ ",ic" ~  
temp=data; Nv iPrp>c  
} ZREAEGi{  
int i1=l; H5N(MihT  
int i2=mid+1; dIo|i,-  
for(int cur=l;cur<=r;cur++){ nAp7X-t  
if(i1==mid+1) 4D/mm(2d$  
data[cur]=temp[i2++]; >)N}V'9  
else if(i2>r) Mlpq2I_x  
data[cur]=temp[i1++]; _5nQe !  
else if(temp[i1] data[cur]=temp[i1++]; "F+Wo&  
else Yb|zE   
data[cur]=temp[i2++]; %V$ujun`  
} Ik#>6  
} KcB  ?[  
T'*.LpNP,  
} Z6cG<,DQ  
YSuw V)Y  
改进后的归并排序: (8r?'H8ZO  
[)gvP'  
package org.rut.util.algorithm.support; 6wWA(![w"  
k*4?fr  
import org.rut.util.algorithm.SortUtil; y^C; ?B<  
*4zVK/FJ  
/** "z }bgy  
* @author treeroot /Ki :6  
* @since 2006-2-2 N[}XLhbt  
* @version 1.0 V,uhBMT#  
*/ A&5$eGe9  
public class ImprovedMergeSort implements SortUtil.Sort { Oh:SH|=]#  
rrSA.J{  
private static final int THRESHOLD = 10; MjI}fs<   
55oLj.l^j  
/* KG#|Cq  
* (non-Javadoc) iR#jBqXD  
* ,gU9y wg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &%Hj.  
*/ 'ce9v@(0  
public void sort(int[] data) { $`'^&o;&f  
int[] temp=new int[data.length]; $gZ|=(y&r  
mergeSort(data,temp,0,data.length-1); 1F5F2OT$8  
} 33\b@F7b  
\Mlj 7.u]  
private void mergeSort(int[] data, int[] temp, int l, int r) { q_f v1U3  
int i, j, k; tazBZ'\c  
int mid = (l + r) / 2; _>5BFQ_  
if (l == r) Y@.> eS  
return; zck)D^,aO  
if ((mid - l) >= THRESHOLD) U2ANu|  
mergeSort(data, temp, l, mid); [jumq1  
else B>47Ic  
insertSort(data, l, mid - l + 1); ]dDyz[NuvD  
if ((r - mid) > THRESHOLD) ,)L.^<  
mergeSort(data, temp, mid + 1, r); vS<;:3  
else q0y?$XS  
insertSort(data, mid + 1, r - mid); >[xQUf,p  
i6m;2 UAa  
for (i = l; i <= mid; i++) { U(./LrM05  
temp = data; kX1hcAa  
} zMrZ[AU  
for (j = 1; j <= r - mid; j++) { Zt` ,DM  
temp[r - j + 1] = data[j + mid]; xs &vgel>  
} ,75,~  
int a = temp[l]; l!iB -?'u  
int b = temp[r]; kd\yHI9A  
for (i = l, j = r, k = l; k <= r; k++) { Mdwh-Cis/  
if (a < b) { !s)2H/KM8  
data[k] = temp[i++]; "E2 g7n&  
a = temp; . ~|^du<X  
} else { 0t4i'??  
data[k] = temp[j--]; F"23>3  
b = temp[j]; v!`M=0k  
} YgWnPp  
} "Pys3=h  
} "Ln\ZYB]  
C1G Wi4)  
/** SwP h-6  
* @param data DTIy/  
* @param l m d C. FO-  
* @param i t%dPj8~  
*/ cRg$~rYd  
private void insertSort(int[] data, int start, int len) { nj9hRiL n  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 50H[u|  
} mI`dZ3h  
} ;5=pBP.  
} 7SqsVq`[~  
} ;8 b f5  
Vfw$>og!  
堆排序: jY?%LY@5I  
*smo{!0Gg  
package org.rut.util.algorithm.support; `aI%laj&M  
 b'Uaj`Sn  
import org.rut.util.algorithm.SortUtil; ng 6G<hi  
/r?X33D!  
/** E{Q^ZSV3B  
* @author treeroot ZK'I$p]b  
* @since 2006-2-2  03#_ (  
* @version 1.0 yz+r @I5  
*/ uC;@Yi8  
public class HeapSort implements SortUtil.Sort{ ss2:8up 99  
6% ,Q  
/* (non-Javadoc) 9SFiL#1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vMI\$E &  
*/ [}AcCXg`L  
public void sort(int[] data) { 3?}SXmA'@  
MaxHeap h=new MaxHeap(); |F=^Cu,  
h.init(data); O>>8%=5Q  
for(int i=0;i h.remove(); yi%B5KF~Al  
System.arraycopy(h.queue,1,data,0,data.length); uIPR*9~6o  
} $i`YtV  
kdo)y(fn@  
private static class MaxHeap{ FVpe*]  
 3sw1y  
void init(int[] data){ ~|!lC}!IKL  
this.queue=new int[data.length+1]; eX$Biv1N  
for(int i=0;i queue[++size]=data; "{:*fI;!  
fixUp(size); _6[NYv$"  
} ~gAx  
} }z*p2)v`  
R`<E3J\*  
private int size=0; lubS{3<  
7)]G"m{  
private int[] queue; A6Qi^TI  
4@Qq5kpk*  
public int get() { $H 9xM  
return queue[1]; C/$IF M<  
} L@ay4,e.bz  
l{3utQH-=z  
public void remove() { jW*A(bK8:  
SortUtil.swap(queue,1,size--); nAYjSE  
fixDown(1); /[-hJ=< Yb  
} u/zfx ;K  
file://fixdown ~& l`"  
private void fixDown(int k) { 3A9|{Vaz+6  
int j; {!4%Z9G  
while ((j = k << 1) <= size) { Yk5kC 0B  
if (j < size %26amp;%26amp; queue[j] j++; lV 1|\~?4  
if (queue[k]>queue[j]) file://不用交换 MWuVV=rd8a  
break; "N;|~S)w!  
SortUtil.swap(queue,j,k); S,v`rmI  
k = j; - t+Mh.  
} 'F~u \m=E  
} B?4\IXek  
private void fixUp(int k) { 8 , =$>@u  
while (k > 1) { (*1 A0+S90  
int j = k >> 1; oa4}GNH  
if (queue[j]>queue[k]) _Dv^~e1c  
break; ppYz~ {"r  
SortUtil.swap(queue,j,k); r3-3*_  
k = j; i>~?XVU  
} D'&L wU,o  
} :z:Blp>nK/  
Mc6y'w  
} OwEz( pj@  
pqe tYu  
} 4M]8po/;  
)<|TEp4r-  
SortUtil: Q&J,"Vxw  
^/+sl-6/F  
package org.rut.util.algorithm; g[$B9 0  
x<l1s  
import org.rut.util.algorithm.support.BubbleSort; gM*s/,;O"  
import org.rut.util.algorithm.support.HeapSort; Vh<`MS0X  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7~16letQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; i~;8'>:|,M  
import org.rut.util.algorithm.support.InsertSort; 4|(?Wt)5  
import org.rut.util.algorithm.support.MergeSort; A_.QHUjpx  
import org.rut.util.algorithm.support.QuickSort; |); >wV"  
import org.rut.util.algorithm.support.SelectionSort; x EBjfn  
import org.rut.util.algorithm.support.ShellSort; Q^k# ?j#  
(g Z!o_  
/** !2Orklzd1  
* @author treeroot A0XFu}  
* @since 2006-2-2 U,=K_oBAq  
* @version 1.0 x6t;=  
*/ |^F-.Z  
public class SortUtil { eZ!k'bS=  
public final static int INSERT = 1; Vo%d;>!G\;  
public final static int BUBBLE = 2; H@zk8]_P  
public final static int SELECTION = 3; _x!pM j(A  
public final static int SHELL = 4; nqBu C  
public final static int QUICK = 5; /\#5\dHj  
public final static int IMPROVED_QUICK = 6; 8syo_sC |  
public final static int MERGE = 7; @K9T )p]  
public final static int IMPROVED_MERGE = 8; No7Q,p  
public final static int HEAP = 9; Y[!a82MTzn  
]Q3Gj@6  
public static void sort(int[] data) { 8VZ-`?p  
sort(data, IMPROVED_QUICK); zCHr  
} x3Ud0[(  
private static String[] name={ kslN_\   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" P5>CSWy%  
}; TI>yi ^}  
tX251S  
private static Sort[] impl=new Sort[]{ @>Keu\)  
new InsertSort(), x}{VHp`|ld  
new BubbleSort(), h,x]  
new SelectionSort(), fDd!Mt  
new ShellSort(), <IVz mzpL  
new QuickSort(), yShHFlO=  
new ImprovedQuickSort(), !A!\S/x4  
new MergeSort(), R%%`wmG)"  
new ImprovedMergeSort(), h uJqqC  
new HeapSort() q}5A^QX  
}; R*X2Z{n  
mw[4<vfB0a  
public static String toString(int algorithm){ +a/o)C{  
return name[algorithm-1]; {Fi@|'  
} :j ~5(K"  
7mM;Q  
public static void sort(int[] data, int algorithm) { O[ !o1.  
impl[algorithm-1].sort(data); %U GlAyj  
} vNC0M:p,  
]D%k)<YK  
public static interface Sort { N-gRfra+8L  
public void sort(int[] data); 6<Z: Xw  
} [fp"MPP3  
blcKtrYg  
public static void swap(int[] data, int i, int j) { vgj^-  
int temp = data; 9#<Og>t2y  
data = data[j]; 5-^%\?,x  
data[j] = temp; ~8*oGG~s  
} "NU".q  
} @@wx~|%  
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